Merge tag 'upstream/2012.12.11'

[youtubedl] / youtube_dl / __init__.py

diff --git a/youtube_dl/__init__.py b/youtube_dl/__init__.py
old mode 100755 (executable)
new mode 100644 (file)
index 7897240..d7e1a91
--- a/youtube_dl/__init__.py
+++ b/youtube_dl/__init__.py
@@ -1,4647 +1,602 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 

+from __future__ import with_statement
+from __future__ import absolute_import
+

 __authors__  = (
 __authors__  = (

-       'Ricardo Garcia Gonzalez',
-       'Danny Colligan',
-       'Benjamin Johnson',
-       'Vasyl\' Vavrychuk',
-       'Witold Baryluk',
-       'Paweł Paprota',
-       'Gergely Imreh',
-       'Rogério Brito',
-       'Philipp Hagemeister',
-       'Sören Schulze',
-       'Kevin Ngo',
-       'Ori Avtalion',
-       'shizeeg',
-       )
+    'Ricardo Garcia Gonzalez',
+    'Danny Colligan',
+    'Benjamin Johnson',
+    'Vasyl\' Vavrychuk',
+    'Witold Baryluk',
+    'Paweł Paprota',
+    'Gergely Imreh',
+    'Rogério Brito',
+    'Philipp Hagemeister',
+    'Sören Schulze',
+    'Kevin Ngo',
+    'Ori Avtalion',
+    'shizeeg',
+    'Filippo Valsorda',
+    'Christian Albrecht',
+    )

 
 __license__ = 'Public Domain'
 
 __license__ = 'Public Domain'

-__version__ = '2012.02.27'
-
-UPDATE_URL = 'https://raw.github.com/rg3/youtube-dl/master/youtube-dl'

 
 

-
-import cookielib
-import datetime

 import getpass
 import getpass

-import gzip
-import htmlentitydefs
-import HTMLParser
-import httplib
-import locale
-import math
-import netrc

 import optparse
 import os
 import optparse
 import os

-import os.path

 import re
 import shlex
 import socket
 import re
 import shlex
 import socket

-import string

 import subprocess
 import sys
 import subprocess
 import sys

-import time
-import urllib
-import urllib2

 import warnings
 import warnings

-import zlib
-
-if os.name == 'nt':
-       import ctypes
-
-try:
-       import email.utils
-except ImportError: # Python 2.4
-       import email.Utils
-try:
-       import cStringIO as StringIO
-except ImportError:
-       import StringIO
-
-# parse_qs was moved from the cgi module to the urlparse module recently.
-try:
-       from urlparse import parse_qs
-except ImportError:
-       from cgi import parse_qs
-
-try:
-       import lxml.etree
-except ImportError:
-       pass # Handled below
-
-try:
-       import xml.etree.ElementTree
-except ImportError: # Python<2.5: Not officially supported, but let it slip
-       warnings.warn('xml.etree.ElementTree support is missing. Consider upgrading to Python >= 2.5 if you get related errors.')
-
-std_headers = {
-       'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:5.0.1) Gecko/20100101 Firefox/5.0.1',
-       'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
-       'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
-       'Accept-Encoding': 'gzip, deflate',
-       'Accept-Language': 'en-us,en;q=0.5',
-}
-
-try:
-       import json
-except ImportError: # Python <2.6, use trivialjson (https://github.com/phihag/trivialjson):
-       import re
-       class json(object):
-               @staticmethod
-               def loads(s):
-                       s = s.decode('UTF-8')
-                       def raiseError(msg, i):
-                               raise ValueError(msg + ' at position ' + str(i) + ' of ' + repr(s) + ': ' + repr(s[i:]))
-                       def skipSpace(i, expectMore=True):
-                               while i < len(s) and s[i] in ' \t\r\n':
-                                       i += 1
-                               if expectMore:
-                                       if i >= len(s):
-                                               raiseError('Premature end', i)
-                               return i
-                       def decodeEscape(match):
-                               esc = match.group(1)
-                               _STATIC = {
-                                       '"': '"',
-                                       '\\': '\\',
-                                       '/': '/',
-                                       'b': unichr(0x8),
-                                       'f': unichr(0xc),
-                                       'n': '\n',
-                                       'r': '\r',
-                                       't': '\t',
-                               }
-                               if esc in _STATIC:
-                                       return _STATIC[esc]
-                               if esc[0] == 'u':
-                                       if len(esc) == 1+4:
-                                               return unichr(int(esc[1:5], 16))
-                                       if len(esc) == 5+6 and esc[5:7] == '\\u':
-                                               hi = int(esc[1:5], 16)
-                                               low = int(esc[7:11], 16)
-                                               return unichr((hi - 0xd800) * 0x400 + low - 0xdc00 + 0x10000)
-                               raise ValueError('Unknown escape ' + str(esc))
-                       def parseString(i):
-                               i += 1
-                               e = i
-                               while True:
-                                       e = s.index('"', e)
-                                       bslashes = 0
-                                       while s[e-bslashes-1] == '\\':
-                                               bslashes += 1
-                                       if bslashes % 2 == 1:
-                                               e += 1
-                                               continue
-                                       break
-                               rexp = re.compile(r'\\(u[dD][89aAbB][0-9a-fA-F]{2}\\u[0-9a-fA-F]{4}|u[0-9a-fA-F]{4}|.|$)')
-                               stri = rexp.sub(decodeEscape, s[i:e])
-                               return (e+1,stri)
-                       def parseObj(i):
-                               i += 1
-                               res = {}
-                               i = skipSpace(i)
-                               if s[i] == '}': # Empty dictionary
-                                       return (i+1,res)
-                               while True:
-                                       if s[i] != '"':
-                                               raiseError('Expected a string object key', i)
-                                       i,key = parseString(i)
-                                       i = skipSpace(i)
-                                       if i >= len(s) or s[i] != ':':
-                                               raiseError('Expected a colon', i)
-                                       i,val = parse(i+1)
-                                       res[key] = val
-                                       i = skipSpace(i)
-                                       if s[i] == '}':
-                                               return (i+1, res)
-                                       if s[i] != ',':
-                                               raiseError('Expected comma or closing curly brace', i)
-                                       i = skipSpace(i+1)
-                       def parseArray(i):
-                               res = []
-                               i = skipSpace(i+1)
-                               if s[i] == ']': # Empty array
-                                       return (i+1,res)
-                               while True:
-                                       i,val = parse(i)
-                                       res.append(val)
-                                       i = skipSpace(i) # Raise exception if premature end
-                                       if s[i] == ']':
-                                               return (i+1, res)
-                                       if s[i] != ',':
-                                               raiseError('Expected a comma or closing bracket', i)
-                                       i = skipSpace(i+1)
-                       def parseDiscrete(i):
-                               for k,v in {'true': True, 'false': False, 'null': None}.items():
-                                       if s.startswith(k, i):
-                                               return (i+len(k), v)
-                               raiseError('Not a boolean (or null)', i)
-                       def parseNumber(i):
-                               mobj = re.match('^(-?(0|[1-9][0-9]*)(\.[0-9]*)?([eE][+-]?[0-9]+)?)', s[i:])
-                               if mobj is None:
-                                       raiseError('Not a number', i)
-                               nums = mobj.group(1)
-                               if '.' in nums or 'e' in nums or 'E' in nums:
-                                       return (i+len(nums), float(nums))
-                               return (i+len(nums), int(nums))
-                       CHARMAP = {'{': parseObj, '[': parseArray, '"': parseString, 't': parseDiscrete, 'f': parseDiscrete, 'n': parseDiscrete}
-                       def parse(i):
-                               i = skipSpace(i)
-                               i,res = CHARMAP.get(s[i], parseNumber)(i)
-                               i = skipSpace(i, False)
-                               return (i,res)
-                       i,res = parse(0)
-                       if i < len(s):
-                               raise ValueError('Extra data at end of input (index ' + str(i) + ' of ' + repr(s) + ': ' + repr(s[i:]) + ')')
-                       return res
-
-def preferredencoding():
-       """Get preferred encoding.
-
-       Returns the best encoding scheme for the system, based on
-       locale.getpreferredencoding() and some further tweaks.
-       """
-       def yield_preferredencoding():
-               try:
-                       pref = locale.getpreferredencoding()
-                       u'TEST'.encode(pref)
-               except:
-                       pref = 'UTF-8'
-               while True:
-                       yield pref
-       return yield_preferredencoding().next()
-
-
-def htmlentity_transform(matchobj):
-       """Transforms an HTML entity to a Unicode character.
-
-       This function receives a match object and is intended to be used with
-       the re.sub() function.
-       """
-       entity = matchobj.group(1)
-
-       # Known non-numeric HTML entity
-       if entity in htmlentitydefs.name2codepoint:
-               return unichr(htmlentitydefs.name2codepoint[entity])
-
-       # Unicode character
-       mobj = re.match(ur'(?u)#(x?\d+)', entity)
-       if mobj is not None:
-               numstr = mobj.group(1)
-               if numstr.startswith(u'x'):
-                       base = 16
-                       numstr = u'0%s' % numstr
-               else:
-                       base = 10
-               return unichr(long(numstr, base))
-
-       # Unknown entity in name, return its literal representation
-       return (u'&%s;' % entity)
-
-
-def sanitize_title(utitle):
-       """Sanitizes a video title so it could be used as part of a filename."""
-       utitle = re.sub(ur'(?u)&(.+?);', htmlentity_transform, utitle)
-       return utitle.replace(unicode(os.sep), u'%')
-
-
-def sanitize_open(filename, open_mode):
-       """Try to open the given filename, and slightly tweak it if this fails.
-
-       Attempts to open the given filename. If this fails, it tries to change
-       the filename slightly, step by step, until it's either able to open it
-       or it fails and raises a final exception, like the standard open()
-       function.
-
-       It returns the tuple (stream, definitive_file_name).
-       """
-       try:
-               if filename == u'-':
-                       if sys.platform == 'win32':
-                               import msvcrt
-                               msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
-                       return (sys.stdout, filename)
-               stream = open(_encodeFilename(filename), open_mode)
-               return (stream, filename)
-       except (IOError, OSError), err:
-               # In case of error, try to remove win32 forbidden chars
-               filename = re.sub(ur'[/<>:"\|\?\*]', u'#', filename)
-
-               # An exception here should be caught in the caller
-               stream = open(_encodeFilename(filename), open_mode)
-               return (stream, filename)
-
-
-def timeconvert(timestr):
-       """Convert RFC 2822 defined time string into system timestamp"""
-       timestamp = None
-       timetuple = email.utils.parsedate_tz(timestr)
-       if timetuple is not None:
-               timestamp = email.utils.mktime_tz(timetuple)
-       return timestamp
-
-def _simplify_title(title):
-       expr = re.compile(ur'[^\w\d_\-]+', flags=re.UNICODE)
-       return expr.sub(u'_', title).strip(u'_')
-
-def _orderedSet(iterable):
-       """ Remove all duplicates from the input iterable """
-       res = []
-       for el in iterable:
-               if el not in res:
-                       res.append(el)
-       return res
-
-def _unescapeHTML(s):
-       """
-       @param s a string (of type unicode)
-       """
-       assert type(s) == type(u'')
-
-       htmlParser = HTMLParser.HTMLParser()
-       return htmlParser.unescape(s)
-
-def _encodeFilename(s):
-       """
-       @param s The name of the file (of type unicode)
-       """
-
-       assert type(s) == type(u'')
-
-       if sys.platform == 'win32' and sys.getwindowsversion().major >= 5:
-               # Pass u'' directly to use Unicode APIs on Windows 2000 and up
-               # (Detecting Windows NT 4 is tricky because 'major >= 4' would
-               # match Windows 9x series as well. Besides, NT 4 is obsolete.)
-               return s
-       else:
-               return s.encode(sys.getfilesystemencoding(), 'ignore')
-
-class DownloadError(Exception):
-       """Download Error exception.
-
-       This exception may be thrown by FileDownloader objects if they are not
-       configured to continue on errors. They will contain the appropriate
-       error message.
-       """
-       pass
-
-
-class SameFileError(Exception):
-       """Same File exception.
-
-       This exception will be thrown by FileDownloader objects if they detect
-       multiple files would have to be downloaded to the same file on disk.
-       """
-       pass
-
-
-class PostProcessingError(Exception):
-       """Post Processing exception.
-
-       This exception may be raised by PostProcessor's .run() method to
-       indicate an error in the postprocessing task.
-       """
-       pass
-
-class MaxDownloadsReached(Exception):
-       """ --max-downloads limit has been reached. """
-       pass
-
-
-class UnavailableVideoError(Exception):
-       """Unavailable Format exception.
-
-       This exception will be thrown when a video is requested
-       in a format that is not available for that video.
-       """
-       pass
-
-
-class ContentTooShortError(Exception):
-       """Content Too Short exception.
-
-       This exception may be raised by FileDownloader objects when a file they
-       download is too small for what the server announced first, indicating
-       the connection was probably interrupted.
-       """
-       # Both in bytes
-       downloaded = None
-       expected = None
-
-       def __init__(self, downloaded, expected):
-               self.downloaded = downloaded
-               self.expected = expected
-
-
-class YoutubeDLHandler(urllib2.HTTPHandler):
-       """Handler for HTTP requests and responses.
-
-       This class, when installed with an OpenerDirector, automatically adds
-       the standard headers to every HTTP request and handles gzipped and
-       deflated responses from web servers. If compression is to be avoided in
-       a particular request, the original request in the program code only has
-       to include the HTTP header "Youtubedl-No-Compression", which will be
-       removed before making the real request.
-
-       Part of this code was copied from:
-
-       http://techknack.net/python-urllib2-handlers/
-
-       Andrew Rowls, the author of that code, agreed to release it to the
-       public domain.
-       """
-
-       @staticmethod
-       def deflate(data):
-               try:
-                       return zlib.decompress(data, -zlib.MAX_WBITS)
-               except zlib.error:
-                       return zlib.decompress(data)
-
-       @staticmethod
-       def addinfourl_wrapper(stream, headers, url, code):
-               if hasattr(urllib2.addinfourl, 'getcode'):
-                       return urllib2.addinfourl(stream, headers, url, code)
-               ret = urllib2.addinfourl(stream, headers, url)
-               ret.code = code
-               return ret
-
-       def http_request(self, req):
-               for h in std_headers:
-                       if h in req.headers:
-                               del req.headers[h]
-                       req.add_header(h, std_headers[h])
-               if 'Youtubedl-no-compression' in req.headers:
-                       if 'Accept-encoding' in req.headers:
-                               del req.headers['Accept-encoding']
-                       del req.headers['Youtubedl-no-compression']
-               return req
-
-       def http_response(self, req, resp):
-               old_resp = resp
-               # gzip
-               if resp.headers.get('Content-encoding', '') == 'gzip':
-                       gz = gzip.GzipFile(fileobj=StringIO.StringIO(resp.read()), mode='r')
-                       resp = self.addinfourl_wrapper(gz, old_resp.headers, old_resp.url, old_resp.code)
-                       resp.msg = old_resp.msg
-               # deflate
-               if resp.headers.get('Content-encoding', '') == 'deflate':
-                       gz = StringIO.StringIO(self.deflate(resp.read()))
-                       resp = self.addinfourl_wrapper(gz, old_resp.headers, old_resp.url, old_resp.code)
-                       resp.msg = old_resp.msg
-               return resp
-
-
-class FileDownloader(object):
-       """File Downloader class.
-
-       File downloader objects are the ones responsible of downloading the
-       actual video file and writing it to disk if the user has requested
-       it, among some other tasks. In most cases there should be one per
-       program. As, given a video URL, the downloader doesn't know how to
-       extract all the needed information, task that InfoExtractors do, it
-       has to pass the URL to one of them.
-
-       For this, file downloader objects have a method that allows
-       InfoExtractors to be registered in a given order. When it is passed
-       a URL, the file downloader handles it to the first InfoExtractor it
-       finds that reports being able to handle it. The InfoExtractor extracts
-       all the information about the video or videos the URL refers to, and
-       asks the FileDownloader to process the video information, possibly
-       downloading the video.
-
-       File downloaders accept a lot of parameters. In order not to saturate
-       the object constructor with arguments, it receives a dictionary of
-       options instead. These options are available through the params
-       attribute for the InfoExtractors to use. The FileDownloader also
-       registers itself as the downloader in charge for the InfoExtractors
-       that are added to it, so this is a "mutual registration".
-
-       Available options:
-
-       username:         Username for authentication purposes.
-       password:         Password for authentication purposes.
-       usenetrc:         Use netrc for authentication instead.
-       quiet:            Do not print messages to stdout.
-       forceurl:         Force printing final URL.
-       forcetitle:       Force printing title.
-       forcethumbnail:   Force printing thumbnail URL.
-       forcedescription: Force printing description.
-       forcefilename:    Force printing final filename.
-       simulate:         Do not download the video files.
-       format:           Video format code.
-       format_limit:     Highest quality format to try.
-       outtmpl:          Template for output names.
-       ignoreerrors:     Do not stop on download errors.
-       ratelimit:        Download speed limit, in bytes/sec.
-       nooverwrites:     Prevent overwriting files.
-       retries:          Number of times to retry for HTTP error 5xx
-       continuedl:       Try to continue downloads if possible.
-       noprogress:       Do not print the progress bar.
-       playliststart:    Playlist item to start at.
-       playlistend:      Playlist item to end at.
-       matchtitle:       Download only matching titles.
-       rejecttitle:      Reject downloads for matching titles.
-       logtostderr:      Log messages to stderr instead of stdout.
-       consoletitle:     Display progress in console window's titlebar.
-       nopart:           Do not use temporary .part files.
-       updatetime:       Use the Last-modified header to set output file timestamps.
-       writedescription: Write the video description to a .description file
-       writeinfojson:    Write the video description to a .info.json file
-       """
-
-       params = None
-       _ies = []
-       _pps = []
-       _download_retcode = None
-       _num_downloads = None
-       _screen_file = None
-
-       def __init__(self, params):
-               """Create a FileDownloader object with the given options."""
-               self._ies = []
-               self._pps = []
-               self._download_retcode = 0
-               self._num_downloads = 0
-               self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
-               self.params = params
-
-       @staticmethod
-       def format_bytes(bytes):
-               if bytes is None:
-                       return 'N/A'
-               if type(bytes) is str:
-                       bytes = float(bytes)
-               if bytes == 0.0:
-                       exponent = 0
-               else:
-                       exponent = long(math.log(bytes, 1024.0))
-               suffix = 'bkMGTPEZY'[exponent]
-               converted = float(bytes) / float(1024 ** exponent)
-               return '%.2f%s' % (converted, suffix)
-
-       @staticmethod
-       def calc_percent(byte_counter, data_len):
-               if data_len is None:
-                       return '---.-%'
-               return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0))
-
-       @staticmethod
-       def calc_eta(start, now, total, current):
-               if total is None:
-                       return '--:--'
-               dif = now - start
-               if current == 0 or dif < 0.001: # One millisecond
-                       return '--:--'
-               rate = float(current) / dif
-               eta = long((float(total) - float(current)) / rate)
-               (eta_mins, eta_secs) = divmod(eta, 60)
-               if eta_mins > 99:
-                       return '--:--'
-               return '%02d:%02d' % (eta_mins, eta_secs)
-
-       @staticmethod
-       def calc_speed(start, now, bytes):
-               dif = now - start
-               if bytes == 0 or dif < 0.001: # One millisecond
-                       return '%10s' % '---b/s'
-               return '%10s' % ('%s/s' % FileDownloader.format_bytes(float(bytes) / dif))
-
-       @staticmethod
-       def best_block_size(elapsed_time, bytes):
-               new_min = max(bytes / 2.0, 1.0)
-               new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
-               if elapsed_time < 0.001:
-                       return long(new_max)
-               rate = bytes / elapsed_time
-               if rate > new_max:
-                       return long(new_max)
-               if rate < new_min:
-                       return long(new_min)
-               return long(rate)
-
-       @staticmethod
-       def parse_bytes(bytestr):
-               """Parse a string indicating a byte quantity into a long integer."""
-               matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr)
-               if matchobj is None:
-                       return None
-               number = float(matchobj.group(1))
-               multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
-               return long(round(number * multiplier))
-
-       def add_info_extractor(self, ie):
-               """Add an InfoExtractor object to the end of the list."""
-               self._ies.append(ie)
-               ie.set_downloader(self)
-
-       def add_post_processor(self, pp):
-               """Add a PostProcessor object to the end of the chain."""
-               self._pps.append(pp)
-               pp.set_downloader(self)
-
-       def to_screen(self, message, skip_eol=False):
-               """Print message to stdout if not in quiet mode."""
-               assert type(message) == type(u'')
-               if not self.params.get('quiet', False):
-                       terminator = [u'\n', u''][skip_eol]
-                       output = message + terminator
-
-                       if 'b' not in self._screen_file.mode or sys.version_info[0] < 3: # Python 2 lies about the mode of sys.stdout/sys.stderr
-                               output = output.encode(preferredencoding(), 'ignore')
-                       self._screen_file.write(output)
-                       self._screen_file.flush()
-
-       def to_stderr(self, message):
-               """Print message to stderr."""
-               print >>sys.stderr, message.encode(preferredencoding())
-
-       def to_cons_title(self, message):
-               """Set console/terminal window title to message."""
-               if not self.params.get('consoletitle', False):
-                       return
-               if os.name == 'nt' and ctypes.windll.kernel32.GetConsoleWindow():
-                       # c_wchar_p() might not be necessary if `message` is
-                       # already of type unicode()
-                       ctypes.windll.kernel32.SetConsoleTitleW(ctypes.c_wchar_p(message))
-               elif 'TERM' in os.environ:
-                       sys.stderr.write('\033]0;%s\007' % message.encode(preferredencoding()))
-
-       def fixed_template(self):
-               """Checks if the output template is fixed."""
-               return (re.search(ur'(?u)%\(.+?\)s', self.params['outtmpl']) is None)
-
-       def trouble(self, message=None):
-               """Determine action to take when a download problem appears.
-
-               Depending on if the downloader has been configured to ignore
-               download errors or not, this method may throw an exception or
-               not when errors are found, after printing the message.
-               """
-               if message is not None:
-                       self.to_stderr(message)
-               if not self.params.get('ignoreerrors', False):
-                       raise DownloadError(message)
-               self._download_retcode = 1
-
-       def slow_down(self, start_time, byte_counter):
-               """Sleep if the download speed is over the rate limit."""
-               rate_limit = self.params.get('ratelimit', None)
-               if rate_limit is None or byte_counter == 0:
-                       return
-               now = time.time()
-               elapsed = now - start_time
-               if elapsed <= 0.0:
-                       return
-               speed = float(byte_counter) / elapsed
-               if speed > rate_limit:
-                       time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
-
-       def temp_name(self, filename):
-               """Returns a temporary filename for the given filename."""
-               if self.params.get('nopart', False) or filename == u'-' or \
-                               (os.path.exists(_encodeFilename(filename)) and not os.path.isfile(_encodeFilename(filename))):
-                       return filename
-               return filename + u'.part'
-
-       def undo_temp_name(self, filename):
-               if filename.endswith(u'.part'):
-                       return filename[:-len(u'.part')]
-               return filename
-
-       def try_rename(self, old_filename, new_filename):
-               try:
-                       if old_filename == new_filename:
-                               return
-                       os.rename(_encodeFilename(old_filename), _encodeFilename(new_filename))
-               except (IOError, OSError), err:
-                       self.trouble(u'ERROR: unable to rename file')
-
-       def try_utime(self, filename, last_modified_hdr):
-               """Try to set the last-modified time of the given file."""
-               if last_modified_hdr is None:
-                       return
-               if not os.path.isfile(_encodeFilename(filename)):
-                       return
-               timestr = last_modified_hdr
-               if timestr is None:
-                       return
-               filetime = timeconvert(timestr)
-               if filetime is None:
-                       return filetime
-               try:
-                       os.utime(filename, (time.time(), filetime))
-               except:
-                       pass
-               return filetime
-
-       def report_writedescription(self, descfn):
-               """ Report that the description file is being written """
-               self.to_screen(u'[info] Writing video description to: ' + descfn)
-
-       def report_writeinfojson(self, infofn):
-               """ Report that the metadata file has been written """
-               self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
-
-       def report_destination(self, filename):
-               """Report destination filename."""
-               self.to_screen(u'[download] Destination: ' + filename)
-
-       def report_progress(self, percent_str, data_len_str, speed_str, eta_str):
-               """Report download progress."""
-               if self.params.get('noprogress', False):
-                       return
-               self.to_screen(u'\r[download] %s of %s at %s ETA %s' %
-                               (percent_str, data_len_str, speed_str, eta_str), skip_eol=True)
-               self.to_cons_title(u'youtube-dl - %s of %s at %s ETA %s' %
-                               (percent_str.strip(), data_len_str.strip(), speed_str.strip(), eta_str.strip()))
-
-       def report_resuming_byte(self, resume_len):
-               """Report attempt to resume at given byte."""
-               self.to_screen(u'[download] Resuming download at byte %s' % resume_len)
-
-       def report_retry(self, count, retries):
-               """Report retry in case of HTTP error 5xx"""
-               self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
-
-       def report_file_already_downloaded(self, file_name):
-               """Report file has already been fully downloaded."""
-               try:
-                       self.to_screen(u'[download] %s has already been downloaded' % file_name)
-               except (UnicodeEncodeError), err:
-                       self.to_screen(u'[download] The file has already been downloaded')
-
-       def report_unable_to_resume(self):
-               """Report it was impossible to resume download."""
-               self.to_screen(u'[download] Unable to resume')
-
-       def report_finish(self):
-               """Report download finished."""
-               if self.params.get('noprogress', False):
-                       self.to_screen(u'[download] Download completed')
-               else:
-                       self.to_screen(u'')
-
-       def increment_downloads(self):
-               """Increment the ordinal that assigns a number to each file."""
-               self._num_downloads += 1
-
-       def prepare_filename(self, info_dict):
-               """Generate the output filename."""
-               try:
-                       template_dict = dict(info_dict)
-                       template_dict['epoch'] = unicode(long(time.time()))
-                       template_dict['autonumber'] = unicode('%05d' % self._num_downloads)
-                       filename = self.params['outtmpl'] % template_dict
-                       return filename
-               except (ValueError, KeyError), err:
-                       self.trouble(u'ERROR: invalid system charset or erroneous output template')
-                       return None
-
-       def _match_entry(self, info_dict):
-               """ Returns None iff the file should be downloaded """
-
-               title = info_dict['title']
-               matchtitle = self.params.get('matchtitle', False)
-               if matchtitle and not re.search(matchtitle, title, re.IGNORECASE):
-                       return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
-               rejecttitle = self.params.get('rejecttitle', False)
-               if rejecttitle and re.search(rejecttitle, title, re.IGNORECASE):
-                       return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
-               return None
-
-       def process_info(self, info_dict):
-               """Process a single dictionary returned by an InfoExtractor."""
-
-               reason = self._match_entry(info_dict)
-               if reason is not None:
-                       self.to_screen(u'[download] ' + reason)
-                       return
-
-               max_downloads = self.params.get('max_downloads')
-               if max_downloads is not None:
-                       if self._num_downloads > int(max_downloads):
-                               raise MaxDownloadsReached()
-
-               filename = self.prepare_filename(info_dict)
-               
-               # Forced printings
-               if self.params.get('forcetitle', False):
-                       print info_dict['title'].encode(preferredencoding(), 'xmlcharrefreplace')
-               if self.params.get('forceurl', False):
-                       print info_dict['url'].encode(preferredencoding(), 'xmlcharrefreplace')
-               if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
-                       print info_dict['thumbnail'].encode(preferredencoding(), 'xmlcharrefreplace')
-               if self.params.get('forcedescription', False) and 'description' in info_dict:
-                       print info_dict['description'].encode(preferredencoding(), 'xmlcharrefreplace')
-               if self.params.get('forcefilename', False) and filename is not None:
-                       print filename.encode(preferredencoding(), 'xmlcharrefreplace')
-               if self.params.get('forceformat', False):
-                       print info_dict['format'].encode(preferredencoding(), 'xmlcharrefreplace')
-
-               # Do nothing else if in simulate mode
-               if self.params.get('simulate', False):
-                       return
-
-               if filename is None:
-                       return
-
-               try:
-                       dn = os.path.dirname(_encodeFilename(filename))
-                       if dn != '' and not os.path.exists(dn): # dn is already encoded
-                               os.makedirs(dn)
-               except (OSError, IOError), err:
-                       self.trouble(u'ERROR: unable to create directory ' + unicode(err))
-                       return
-
-               if self.params.get('writedescription', False):
-                       try:
-                               descfn = filename + u'.description'
-                               self.report_writedescription(descfn)
-                               descfile = open(_encodeFilename(descfn), 'wb')
-                               try:
-                                       descfile.write(info_dict['description'].encode('utf-8'))
-                               finally:
-                                       descfile.close()
-                       except (OSError, IOError):
-                               self.trouble(u'ERROR: Cannot write description file ' + descfn)
-                               return
-
-               if self.params.get('writeinfojson', False):
-                       infofn = filename + u'.info.json'
-                       self.report_writeinfojson(infofn)
-                       try:
-                               json.dump
-                       except (NameError,AttributeError):
-                               self.trouble(u'ERROR: No JSON encoder found. Update to Python 2.6+, setup a json module, or leave out --write-info-json.')
-                               return
-                       try:
-                               infof = open(_encodeFilename(infofn), 'wb')
-                               try:
-                                       json_info_dict = dict((k,v) for k,v in info_dict.iteritems() if not k in ('urlhandle',))
-                                       json.dump(json_info_dict, infof)
-                               finally:
-                                       infof.close()
-                       except (OSError, IOError):
-                               self.trouble(u'ERROR: Cannot write metadata to JSON file ' + infofn)
-                               return
-
-               if not self.params.get('skip_download', False):
-                       if self.params.get('nooverwrites', False) and os.path.exists(_encodeFilename(filename)):
-                               success = True
-                       else:
-                               try:
-                                       success = self._do_download(filename, info_dict)
-                               except (OSError, IOError), err:
-                                       raise UnavailableVideoError
-                               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                                       self.trouble(u'ERROR: unable to download video data: %s' % str(err))
-                                       return
-                               except (ContentTooShortError, ), err:
-                                       self.trouble(u'ERROR: content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
-                                       return
-       
-                       if success:
-                               try:
-                                       self.post_process(filename, info_dict)
-                               except (PostProcessingError), err:
-                                       self.trouble(u'ERROR: postprocessing: %s' % str(err))
-                                       return
-
-       def download(self, url_list):
-               """Download a given list of URLs."""
-               if len(url_list) > 1 and self.fixed_template():
-                       raise SameFileError(self.params['outtmpl'])
-
-               for url in url_list:
-                       suitable_found = False
-                       for ie in self._ies:
-                               # Go to next InfoExtractor if not suitable
-                               if not ie.suitable(url):
-                                       continue
-
-                               # Suitable InfoExtractor found
-                               suitable_found = True
-
-                               # Extract information from URL and process it
-                               ie.extract(url)
-
-                               # Suitable InfoExtractor had been found; go to next URL
-                               break
-
-                       if not suitable_found:
-                               self.trouble(u'ERROR: no suitable InfoExtractor: %s' % url)
-
-               return self._download_retcode
-
-       def post_process(self, filename, ie_info):
-               """Run the postprocessing chain on the given file."""
-               info = dict(ie_info)
-               info['filepath'] = filename
-               for pp in self._pps:
-                       info = pp.run(info)
-                       if info is None:
-                               break
-
-       def _download_with_rtmpdump(self, filename, url, player_url):
-               self.report_destination(filename)
-               tmpfilename = self.temp_name(filename)
-
-               # Check for rtmpdump first
-               try:
-                       subprocess.call(['rtmpdump', '-h'], stdout=(file(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
-               except (OSError, IOError):
-                       self.trouble(u'ERROR: RTMP download detected but "rtmpdump" could not be run')
-                       return False
-
-               # Download using rtmpdump. rtmpdump returns exit code 2 when
-               # the connection was interrumpted and resuming appears to be
-               # possible. This is part of rtmpdump's normal usage, AFAIK.
-               basic_args = ['rtmpdump', '-q'] + [[], ['-W', player_url]][player_url is not None] + ['-r', url, '-o', tmpfilename]
-               args = basic_args + [[], ['-e', '-k', '1']][self.params.get('continuedl', False)]
-               if self.params.get('verbose', False):
-                       try:
-                               import pipes
-                               shell_quote = lambda args: ' '.join(map(pipes.quote, args))
-                       except ImportError:
-                               shell_quote = repr
-                       self.to_screen(u'[debug] rtmpdump command line: ' + shell_quote(args))
-               retval = subprocess.call(args)
-               while retval == 2 or retval == 1:
-                       prevsize = os.path.getsize(_encodeFilename(tmpfilename))
-                       self.to_screen(u'\r[rtmpdump] %s bytes' % prevsize, skip_eol=True)
-                       time.sleep(5.0) # This seems to be needed
-                       retval = subprocess.call(basic_args + ['-e'] + [[], ['-k', '1']][retval == 1])
-                       cursize = os.path.getsize(_encodeFilename(tmpfilename))
-                       if prevsize == cursize and retval == 1:
-                               break
-                        # Some rtmp streams seem abort after ~ 99.8%. Don't complain for those
-                       if prevsize == cursize and retval == 2 and cursize > 1024:
-                               self.to_screen(u'\r[rtmpdump] Could not download the whole video. This can happen for some advertisements.')
-                               retval = 0
-                               break
-               if retval == 0:
-                       self.to_screen(u'\r[rtmpdump] %s bytes' % os.path.getsize(_encodeFilename(tmpfilename)))
-                       self.try_rename(tmpfilename, filename)
-                       return True
-               else:
-                       self.trouble(u'\nERROR: rtmpdump exited with code %d' % retval)
-                       return False
-
-       def _do_download(self, filename, info_dict):
-               url = info_dict['url']
-               player_url = info_dict.get('player_url', None)
-
-               # Check file already present
-               if self.params.get('continuedl', False) and os.path.isfile(_encodeFilename(filename)) and not self.params.get('nopart', False):
-                       self.report_file_already_downloaded(filename)
-                       return True
-
-               # Attempt to download using rtmpdump
-               if url.startswith('rtmp'):
-                       return self._download_with_rtmpdump(filename, url, player_url)
-
-               tmpfilename = self.temp_name(filename)
-               stream = None
-
-               # Do not include the Accept-Encoding header
-               headers = {'Youtubedl-no-compression': 'True'}
-               basic_request = urllib2.Request(url, None, headers)
-               request = urllib2.Request(url, None, headers)

 
 

-               # Establish possible resume length
-               if os.path.isfile(_encodeFilename(tmpfilename)):
-                       resume_len = os.path.getsize(_encodeFilename(tmpfilename))
-               else:
-                       resume_len = 0
+from .utils import *
+from .version import __version__
+from .FileDownloader import *
+from .InfoExtractors import *
+from .PostProcessor import *

 
 

-               open_mode = 'wb'
-               if resume_len != 0:
-                       if self.params.get('continuedl', False):
-                               self.report_resuming_byte(resume_len)
-                               request.add_header('Range','bytes=%d-' % resume_len)
-                               open_mode = 'ab'
-                       else:
-                               resume_len = 0
-
-               count = 0
-               retries = self.params.get('retries', 0)
-               while count <= retries:
-                       # Establish connection
-                       try:
-                               if count == 0 and 'urlhandle' in info_dict:
-                                       data = info_dict['urlhandle']
-                               data = urllib2.urlopen(request)
-                               break
-                       except (urllib2.HTTPError, ), err:
-                               if (err.code < 500 or err.code >= 600) and err.code != 416:
-                                       # Unexpected HTTP error
-                                       raise
-                               elif err.code == 416:
-                                       # Unable to resume (requested range not satisfiable)
-                                       try:
-                                               # Open the connection again without the range header
-                                               data = urllib2.urlopen(basic_request)
-                                               content_length = data.info()['Content-Length']
-                                       except (urllib2.HTTPError, ), err:
-                                               if err.code < 500 or err.code >= 600:
-                                                       raise
-                                       else:
-                                               # Examine the reported length
-                                               if (content_length is not None and
-                                                               (resume_len - 100 < long(content_length) < resume_len + 100)):
-                                                       # The file had already been fully downloaded.
-                                                       # Explanation to the above condition: in issue #175 it was revealed that
-                                                       # YouTube sometimes adds or removes a few bytes from the end of the file,
-                                                       # changing the file size slightly and causing problems for some users. So
-                                                       # I decided to implement a suggested change and consider the file
-                                                       # completely downloaded if the file size differs less than 100 bytes from
-                                                       # the one in the hard drive.
-                                                       self.report_file_already_downloaded(filename)
-                                                       self.try_rename(tmpfilename, filename)
-                                                       return True
-                                               else:
-                                                       # The length does not match, we start the download over
-                                                       self.report_unable_to_resume()
-                                                       open_mode = 'wb'
-                                                       break
-                       # Retry
-                       count += 1
-                       if count <= retries:
-                               self.report_retry(count, retries)
-
-               if count > retries:
-                       self.trouble(u'ERROR: giving up after %s retries' % retries)
-                       return False
-
-               data_len = data.info().get('Content-length', None)
-               if data_len is not None:
-                       data_len = long(data_len) + resume_len
-               data_len_str = self.format_bytes(data_len)
-               byte_counter = 0 + resume_len
-               block_size = 1024
-               start = time.time()
-               while True:
-                       # Download and write
-                       before = time.time()
-                       data_block = data.read(block_size)
-                       after = time.time()
-                       if len(data_block) == 0:
-                               break
-                       byte_counter += len(data_block)
-
-                       # Open file just in time
-                       if stream is None:
-                               try:
-                                       (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode)
-                                       assert stream is not None
-                                       filename = self.undo_temp_name(tmpfilename)
-                                       self.report_destination(filename)
-                               except (OSError, IOError), err:
-                                       self.trouble(u'ERROR: unable to open for writing: %s' % str(err))
-                                       return False
-                       try:
-                               stream.write(data_block)
-                       except (IOError, OSError), err:
-                               self.trouble(u'\nERROR: unable to write data: %s' % str(err))
-                               return False
-                       block_size = self.best_block_size(after - before, len(data_block))
-
-                       # Progress message
-                       speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len)
-                       if data_len is None:
-                               self.report_progress('Unknown %', data_len_str, speed_str, 'Unknown ETA')
-                       else:
-                               percent_str = self.calc_percent(byte_counter, data_len)
-                               eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
-                               self.report_progress(percent_str, data_len_str, speed_str, eta_str)
-
-                       # Apply rate limit
-                       self.slow_down(start, byte_counter - resume_len)
-
-               if stream is None:
-                       self.trouble(u'\nERROR: Did not get any data blocks')
-                       return False
-               stream.close()
-               self.report_finish()
-               if data_len is not None and byte_counter != data_len:
-                       raise ContentTooShortError(byte_counter, long(data_len))
-               self.try_rename(tmpfilename, filename)
-
-               # Update file modification time
-               if self.params.get('updatetime', True):
-                       info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None))
-
-               return True
-
-
-class InfoExtractor(object):
-       """Information Extractor class.
-
-       Information extractors are the classes that, given a URL, extract
-       information from the video (or videos) the URL refers to. This
-       information includes the real video URL, the video title and simplified
-       title, author and others. The information is stored in a dictionary
-       which is then passed to the FileDownloader. The FileDownloader
-       processes this information possibly downloading the video to the file
-       system, among other possible outcomes. The dictionaries must include
-       the following fields:
-
-       id:             Video identifier.
-       url:            Final video URL.
-       uploader:       Nickname of the video uploader.
-       title:          Literal title.
-       stitle:         Simplified title.
-       ext:            Video filename extension.
-       format:         Video format.
-       player_url:     SWF Player URL (may be None).
-
-       The following fields are optional. Their primary purpose is to allow
-       youtube-dl to serve as the backend for a video search function, such
-       as the one in youtube2mp3.  They are only used when their respective
-       forced printing functions are called:
-
-       thumbnail:      Full URL to a video thumbnail image.
-       description:    One-line video description.
-
-       Subclasses of this one should re-define the _real_initialize() and
-       _real_extract() methods and define a _VALID_URL regexp.
-       Probably, they should also be added to the list of extractors.
-       """
-
-       _ready = False
-       _downloader = None
-
-       def __init__(self, downloader=None):
-               """Constructor. Receives an optional downloader."""
-               self._ready = False
-               self.set_downloader(downloader)
-
-       def suitable(self, url):
-               """Receives a URL and returns True if suitable for this IE."""
-               return re.match(self._VALID_URL, url) is not None
-
-       def initialize(self):
-               """Initializes an instance (authentication, etc)."""
-               if not self._ready:
-                       self._real_initialize()
-                       self._ready = True
-
-       def extract(self, url):
-               """Extracts URL information and returns it in list of dicts."""
-               self.initialize()
-               return self._real_extract(url)
-
-       def set_downloader(self, downloader):
-               """Sets the downloader for this IE."""
-               self._downloader = downloader
-
-       def _real_initialize(self):
-               """Real initialization process. Redefine in subclasses."""
-               pass
-
-       def _real_extract(self, url):
-               """Real extraction process. Redefine in subclasses."""
-               pass
-
-
-class YoutubeIE(InfoExtractor):
-       """Information extractor for youtube.com."""
-
-       _VALID_URL = r'^((?:https?://)?(?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/)(?!view_play_list|my_playlists|artist|playlist)(?:(?:(?:v|embed|e)/)|(?:(?:watch(?:_popup)?(?:\.php)?)?(?:\?|#!?)(?:.+&)?v=))?)?([0-9A-Za-z_-]+)(?(1).+)?$'
-       _LANG_URL = r'http://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1'
-       _LOGIN_URL = 'https://www.youtube.com/signup?next=/&gl=US&hl=en'
-       _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'
-       _NETRC_MACHINE = 'youtube'
-       # Listed in order of quality
-       _available_formats = ['38', '37', '22', '45', '35', '44', '34', '18', '43', '6', '5', '17', '13']
-       _available_formats_prefer_free = ['38', '37', '45', '22', '44', '35', '43', '34', '18', '6', '5', '17', '13']
-       _video_extensions = {
-               '13': '3gp',
-               '17': 'mp4',
-               '18': 'mp4',
-               '22': 'mp4',
-               '37': 'mp4',
-               '38': 'video', # You actually don't know if this will be MOV, AVI or whatever
-               '43': 'webm',
-               '44': 'webm',
-               '45': 'webm',
-       }
-       _video_dimensions = {
-               '5': '240x400',
-               '6': '???',
-               '13': '???',
-               '17': '144x176',
-               '18': '360x640',
-               '22': '720x1280',
-               '34': '360x640',
-               '35': '480x854',
-               '37': '1080x1920',
-               '38': '3072x4096',
-               '43': '360x640',
-               '44': '480x854',
-               '45': '720x1280',
-       }       
-       IE_NAME = u'youtube'
-
-       def report_lang(self):
-               """Report attempt to set language."""
-               self._downloader.to_screen(u'[youtube] Setting language')
-
-       def report_login(self):
-               """Report attempt to log in."""
-               self._downloader.to_screen(u'[youtube] Logging in')
-
-       def report_age_confirmation(self):
-               """Report attempt to confirm age."""
-               self._downloader.to_screen(u'[youtube] Confirming age')
-
-       def report_video_webpage_download(self, video_id):
-               """Report attempt to download video webpage."""
-               self._downloader.to_screen(u'[youtube] %s: Downloading video webpage' % video_id)
-
-       def report_video_info_webpage_download(self, video_id):
-               """Report attempt to download video info webpage."""
-               self._downloader.to_screen(u'[youtube] %s: Downloading video info webpage' % video_id)
-
-       def report_information_extraction(self, video_id):
-               """Report attempt to extract video information."""
-               self._downloader.to_screen(u'[youtube] %s: Extracting video information' % video_id)
-
-       def report_unavailable_format(self, video_id, format):
-               """Report extracted video URL."""
-               self._downloader.to_screen(u'[youtube] %s: Format %s not available' % (video_id, format))
-
-       def report_rtmp_download(self):
-               """Indicate the download will use the RTMP protocol."""
-               self._downloader.to_screen(u'[youtube] RTMP download detected')
-
-       def _print_formats(self, formats):
-               print 'Available formats:'
-               for x in formats:
-                       print '%s\t:\t%s\t[%s]' %(x, self._video_extensions.get(x, 'flv'), self._video_dimensions.get(x, '???'))
-
-       def _real_initialize(self):
-               if self._downloader is None:
-                       return
-
-               username = None
-               password = None
-               downloader_params = self._downloader.params
-
-               # Attempt to use provided username and password or .netrc data
-               if downloader_params.get('username', None) is not None:
-                       username = downloader_params['username']
-                       password = downloader_params['password']
-               elif downloader_params.get('usenetrc', False):
-                       try:
-                               info = netrc.netrc().authenticators(self._NETRC_MACHINE)
-                               if info is not None:
-                                       username = info[0]
-                                       password = info[2]
-                               else:
-                                       raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE)
-                       except (IOError, netrc.NetrcParseError), err:
-                               self._downloader.to_stderr(u'WARNING: parsing .netrc: %s' % str(err))
-                               return
-
-               # Set language
-               request = urllib2.Request(self._LANG_URL)
-               try:
-                       self.report_lang()
-                       urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.to_stderr(u'WARNING: unable to set language: %s' % str(err))
-                       return
-
-               # No authentication to be performed
-               if username is None:
-                       return
-
-               # Log in
-               login_form = {
-                               'current_form': 'loginForm',
-                               'next':         '/',
-                               'action_login': 'Log In',
-                               'username':     username,
-                               'password':     password,
-                               }
-               request = urllib2.Request(self._LOGIN_URL, urllib.urlencode(login_form))
-               try:
-                       self.report_login()
-                       login_results = urllib2.urlopen(request).read()
-                       if re.search(r'(?i)<form[^>]* name="loginForm"', login_results) is not None:
-                               self._downloader.to_stderr(u'WARNING: unable to log in: bad username or password')
-                               return
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.to_stderr(u'WARNING: unable to log in: %s' % str(err))
-                       return
-
-               # Confirm age
-               age_form = {
-                               'next_url':             '/',
-                               'action_confirm':       'Confirm',
-                               }
-               request = urllib2.Request(self._AGE_URL, urllib.urlencode(age_form))
-               try:
-                       self.report_age_confirmation()
-                       age_results = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to confirm age: %s' % str(err))
-                       return
-
-       def _real_extract(self, url):
-               # Extract video id from URL
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-               video_id = mobj.group(2)
-
-               # Get video webpage
-               self.report_video_webpage_download(video_id)
-               request = urllib2.Request('http://www.youtube.com/watch?v=%s&gl=US&hl=en&has_verified=1' % video_id)
-               try:
-                       video_webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
-                       return
-
-               # Attempt to extract SWF player URL
-               mobj = re.search(r'swfConfig.*?"(http:\\/\\/.*?watch.*?-.*?\.swf)"', video_webpage)
-               if mobj is not None:
-                       player_url = re.sub(r'\\(.)', r'\1', mobj.group(1))
-               else:
-                       player_url = None
-
-               # Get video info
-               self.report_video_info_webpage_download(video_id)
-               for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']:
-                       video_info_url = ('http://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
-                                       % (video_id, el_type))
-                       request = urllib2.Request(video_info_url)
-                       try:
-                               video_info_webpage = urllib2.urlopen(request).read()
-                               video_info = parse_qs(video_info_webpage)
-                               if 'token' in video_info:
-                                       break
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download video info webpage: %s' % str(err))
-                               return
-               if 'token' not in video_info:
-                       if 'reason' in video_info:
-                               self._downloader.trouble(u'ERROR: YouTube said: %s' % video_info['reason'][0].decode('utf-8'))
-                       else:
-                               self._downloader.trouble(u'ERROR: "token" parameter not in video info for unknown reason')
-                       return
-
-               # Start extracting information
-               self.report_information_extraction(video_id)
-
-               # uploader
-               if 'author' not in video_info:
-                       self._downloader.trouble(u'ERROR: unable to extract uploader nickname')
-                       return
-               video_uploader = urllib.unquote_plus(video_info['author'][0])
-
-               # title
-               if 'title' not in video_info:
-                       self._downloader.trouble(u'ERROR: unable to extract video title')
-                       return
-               video_title = urllib.unquote_plus(video_info['title'][0])
-               video_title = video_title.decode('utf-8')
-               video_title = sanitize_title(video_title)
-
-               # simplified title
-               simple_title = _simplify_title(video_title)
-
-               # thumbnail image
-               if 'thumbnail_url' not in video_info:
-                       self._downloader.trouble(u'WARNING: unable to extract video thumbnail')
-                       video_thumbnail = ''
-               else:   # don't panic if we can't find it
-                       video_thumbnail = urllib.unquote_plus(video_info['thumbnail_url'][0])
-
-               # upload date
-               upload_date = u'NA'
-               mobj = re.search(r'id="eow-date.*?>(.*?)</span>', video_webpage, re.DOTALL)
-               if mobj is not None:
-                       upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
-                       format_expressions = ['%d %B %Y', '%B %d %Y', '%b %d %Y']
-                       for expression in format_expressions:
-                               try:
-                                       upload_date = datetime.datetime.strptime(upload_date, expression).strftime('%Y%m%d')
-                               except:
-                                       pass
-
-               # description
-               try:
-                       lxml.etree
-               except NameError:
-                       video_description = u'No description available.'
-                       mobj = re.search(r'<meta name="description" content="(.*?)">', video_webpage)
-                       if mobj is not None:
-                               video_description = mobj.group(1).decode('utf-8')
-               else:
-                       html_parser = lxml.etree.HTMLParser(encoding='utf-8')
-                       vwebpage_doc = lxml.etree.parse(StringIO.StringIO(video_webpage), html_parser)
-                       video_description = u''.join(vwebpage_doc.xpath('id("eow-description")//text()'))
-                       # TODO use another parser
-
-               # token
-               video_token = urllib.unquote_plus(video_info['token'][0])
-
-               # Decide which formats to download
-               req_format = self._downloader.params.get('format', None)
-
-               if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
-                       self.report_rtmp_download()
-                       video_url_list = [(None, video_info['conn'][0])]
-               elif 'url_encoded_fmt_stream_map' in video_info and len(video_info['url_encoded_fmt_stream_map']) >= 1:
-                       url_data_strs = video_info['url_encoded_fmt_stream_map'][0].split(',')
-                       url_data = [parse_qs(uds) for uds in url_data_strs]
-                       url_data = filter(lambda ud: 'itag' in ud and 'url' in ud, url_data)
-                       url_map = dict((ud['itag'][0], ud['url'][0]) for ud in url_data)
-
-                       format_limit = self._downloader.params.get('format_limit', None)
-                       available_formats = self._available_formats_prefer_free if self._downloader.params.get('prefer_free_formats', False) else self._available_formats
-                       if format_limit is not None and format_limit in available_formats:
-                               format_list = available_formats[available_formats.index(format_limit):]
-                       else:
-                               format_list = available_formats
-                       existing_formats = [x for x in format_list if x in url_map]
-                       if len(existing_formats) == 0:
-                               self._downloader.trouble(u'ERROR: no known formats available for video')
-                               return
-                       if self._downloader.params.get('listformats', None):
-                               self._print_formats(existing_formats)
-                               return
-                       if req_format is None or req_format == 'best':
-                               video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
-                       elif req_format == 'worst':
-                               video_url_list = [(existing_formats[len(existing_formats)-1], url_map[existing_formats[len(existing_formats)-1]])] # worst quality
-                       elif req_format in ('-1', 'all'):
-                               video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
-                       else:
-                               # Specific formats. We pick the first in a slash-delimeted sequence.
-                               # For example, if '1/2/3/4' is requested and '2' and '4' are available, we pick '2'.
-                               req_formats = req_format.split('/')
-                               video_url_list = None
-                               for rf in req_formats:
-                                       if rf in url_map:
-                                               video_url_list = [(rf, url_map[rf])]
-                                               break
-                               if video_url_list is None:
-                                       self._downloader.trouble(u'ERROR: requested format not available')
-                                       return
-               else:
-                       self._downloader.trouble(u'ERROR: no conn or url_encoded_fmt_stream_map information found in video info')
-                       return
-
-               for format_param, video_real_url in video_url_list:
-                       # At this point we have a new video
-                       self._downloader.increment_downloads()
-
-                       # Extension
-                       video_extension = self._video_extensions.get(format_param, 'flv')
-
-                       try:
-                               # Process video information
-                               self._downloader.process_info({
-                                       'id':           video_id.decode('utf-8'),
-                                       'url':          video_real_url.decode('utf-8'),
-                                       'uploader':     video_uploader.decode('utf-8'),
-                                       'upload_date':  upload_date,
-                                       'title':        video_title,
-                                       'stitle':       simple_title,
-                                       'ext':          video_extension.decode('utf-8'),
-                                       'format':       (format_param is None and u'NA' or format_param.decode('utf-8')),
-                                       'thumbnail':    video_thumbnail.decode('utf-8'),
-                                       'description':  video_description,
-                                       'player_url':   player_url,
-                               })
-                       except UnavailableVideoError, err:
-                               self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class MetacafeIE(InfoExtractor):
-       """Information Extractor for metacafe.com."""
-
-       _VALID_URL = r'(?:http://)?(?:www\.)?metacafe\.com/watch/([^/]+)/([^/]+)/.*'
-       _DISCLAIMER = 'http://www.metacafe.com/family_filter/'
-       _FILTER_POST = 'http://www.metacafe.com/f/index.php?inputType=filter&controllerGroup=user'
-       _youtube_ie = None
-       IE_NAME = u'metacafe'
-
-       def __init__(self, youtube_ie, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-               self._youtube_ie = youtube_ie
-
-       def report_disclaimer(self):
-               """Report disclaimer retrieval."""
-               self._downloader.to_screen(u'[metacafe] Retrieving disclaimer')
-
-       def report_age_confirmation(self):
-               """Report attempt to confirm age."""
-               self._downloader.to_screen(u'[metacafe] Confirming age')
-
-       def report_download_webpage(self, video_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'[metacafe] %s: Downloading webpage' % video_id)
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[metacafe] %s: Extracting information' % video_id)
-
-       def _real_initialize(self):
-               # Retrieve disclaimer
-               request = urllib2.Request(self._DISCLAIMER)
-               try:
-                       self.report_disclaimer()
-                       disclaimer = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to retrieve disclaimer: %s' % str(err))
-                       return
-
-               # Confirm age
-               disclaimer_form = {
-                       'filters': '0',
-                       'submit': "Continue - I'm over 18",
-                       }
-               request = urllib2.Request(self._FILTER_POST, urllib.urlencode(disclaimer_form))
-               try:
-                       self.report_age_confirmation()
-                       disclaimer = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to confirm age: %s' % str(err))
-                       return
-
-       def _real_extract(self, url):
-               # Extract id and simplified title from URL
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-
-               video_id = mobj.group(1)
-
-               # Check if video comes from YouTube
-               mobj2 = re.match(r'^yt-(.*)$', video_id)
-               if mobj2 is not None:
-                       self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % mobj2.group(1))
-                       return
-
-               # At this point we have a new video
-               self._downloader.increment_downloads()
-
-               simple_title = mobj.group(2).decode('utf-8')
-
-               # Retrieve video webpage to extract further information
-               request = urllib2.Request('http://www.metacafe.com/watch/%s/' % video_id)
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable retrieve video webpage: %s' % str(err))
-                       return
-
-               # Extract URL, uploader and title from webpage
-               self.report_extraction(video_id)
-               mobj = re.search(r'(?m)&mediaURL=([^&]+)', webpage)
-               if mobj is not None:
-                       mediaURL = urllib.unquote(mobj.group(1))
-                       video_extension = mediaURL[-3:]
-
-                       # Extract gdaKey if available
-                       mobj = re.search(r'(?m)&gdaKey=(.*?)&', webpage)
-                       if mobj is None:
-                               video_url = mediaURL
-                       else:
-                               gdaKey = mobj.group(1)
-                               video_url = '%s?__gda__=%s' % (mediaURL, gdaKey)
-               else:
-                       mobj = re.search(r' name="flashvars" value="(.*?)"', webpage)
-                       if mobj is None:
-                               self._downloader.trouble(u'ERROR: unable to extract media URL')
-                               return
-                       vardict = parse_qs(mobj.group(1))
-                       if 'mediaData' not in vardict:
-                               self._downloader.trouble(u'ERROR: unable to extract media URL')
-                               return
-                       mobj = re.search(r'"mediaURL":"(http.*?)","key":"(.*?)"', vardict['mediaData'][0])
-                       if mobj is None:
-                               self._downloader.trouble(u'ERROR: unable to extract media URL')
-                               return
-                       mediaURL = mobj.group(1).replace('\\/', '/')
-                       video_extension = mediaURL[-3:]
-                       video_url = '%s?__gda__=%s' % (mediaURL, mobj.group(2))
-
-               mobj = re.search(r'(?im)<title>(.*) - Video</title>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-               video_title = sanitize_title(video_title)
-
-               mobj = re.search(r'(?ms)By:\s*<a .*?>(.+?)<', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract uploader nickname')
-                       return
-               video_uploader = mobj.group(1)
-
-               try:
-                       # Process video information
-                       self._downloader.process_info({
-                               'id':           video_id.decode('utf-8'),
-                               'url':          video_url.decode('utf-8'),
-                               'uploader':     video_uploader.decode('utf-8'),
-                               'upload_date':  u'NA',
-                               'title':        video_title,
-                               'stitle':       simple_title,
-                               'ext':          video_extension.decode('utf-8'),
-                               'format':       u'NA',
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class DailymotionIE(InfoExtractor):
-       """Information Extractor for Dailymotion"""
-
-       _VALID_URL = r'(?i)(?:https?://)?(?:www\.)?dailymotion\.[a-z]{2,3}/video/([^_/]+)_([^/]+)'
-       IE_NAME = u'dailymotion'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_download_webpage(self, video_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'[dailymotion] %s: Downloading webpage' % video_id)
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[dailymotion] %s: Extracting information' % video_id)
-
-       def _real_extract(self, url):
-               # Extract id and simplified title from URL
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-
-               # At this point we have a new video
-               self._downloader.increment_downloads()
-               video_id = mobj.group(1)
-
-               video_extension = 'flv'
-
-               # Retrieve video webpage to extract further information
-               request = urllib2.Request(url)
-               request.add_header('Cookie', 'family_filter=off')
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable retrieve video webpage: %s' % str(err))
-                       return
-
-               # Extract URL, uploader and title from webpage
-               self.report_extraction(video_id)
-               mobj = re.search(r'(?i)addVariable\(\"sequence\"\s*,\s*\"([^\"]+?)\"\)', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract media URL')
-                       return
-               sequence = urllib.unquote(mobj.group(1))
-               mobj = re.search(r',\"sdURL\"\:\"([^\"]+?)\",', sequence)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract media URL')
-                       return
-               mediaURL = urllib.unquote(mobj.group(1)).replace('\\', '')
-
-               # if needed add http://www.dailymotion.com/ if relative URL
-
-               video_url = mediaURL
-
-               mobj = re.search(r'<meta property="og:title" content="(?P<title>[^"]*)" />', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract title')
-                       return
-               video_title = _unescapeHTML(mobj.group('title').decode('utf-8'))
-               video_title = sanitize_title(video_title)
-               simple_title = _simplify_title(video_title)
-
-               mobj = re.search(r'(?im)<span class="owner[^\"]+?">[^<]+?<a [^>]+?>([^<]+?)</a></span>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract uploader nickname')
-                       return
-               video_uploader = mobj.group(1)
-
-               try:
-                       # Process video information
-                       self._downloader.process_info({
-                               'id':           video_id.decode('utf-8'),
-                               'url':          video_url.decode('utf-8'),
-                               'uploader':     video_uploader.decode('utf-8'),
-                               'upload_date':  u'NA',
-                               'title':        video_title,
-                               'stitle':       simple_title,
-                               'ext':          video_extension.decode('utf-8'),
-                               'format':       u'NA',
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class GoogleIE(InfoExtractor):
-       """Information extractor for video.google.com."""
-
-       _VALID_URL = r'(?:http://)?video\.google\.(?:com(?:\.au)?|co\.(?:uk|jp|kr|cr)|ca|de|es|fr|it|nl|pl)/videoplay\?docid=([^\&]+).*'
-       IE_NAME = u'video.google'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_download_webpage(self, video_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'[video.google] %s: Downloading webpage' % video_id)
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[video.google] %s: Extracting information' % video_id)
-
-       def _real_extract(self, url):
-               # Extract id from URL
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: Invalid URL: %s' % url)
-                       return
-
-               # At this point we have a new video
-               self._downloader.increment_downloads()
-               video_id = mobj.group(1)
-
-               video_extension = 'mp4'
-
-               # Retrieve video webpage to extract further information
-               request = urllib2.Request('http://video.google.com/videoplay?docid=%s&hl=en&oe=utf-8' % video_id)
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                       return
-
-               # Extract URL, uploader, and title from webpage
-               self.report_extraction(video_id)
-               mobj = re.search(r"download_url:'([^']+)'", webpage)
-               if mobj is None:
-                       video_extension = 'flv'
-                       mobj = re.search(r"(?i)videoUrl\\x3d(.+?)\\x26", webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract media URL')
-                       return
-               mediaURL = urllib.unquote(mobj.group(1))
-               mediaURL = mediaURL.replace('\\x3d', '\x3d')
-               mediaURL = mediaURL.replace('\\x26', '\x26')
-
-               video_url = mediaURL
-
-               mobj = re.search(r'<title>(.*)</title>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-               video_title = sanitize_title(video_title)
-               simple_title = _simplify_title(video_title)
-
-               # Extract video description
-               mobj = re.search(r'<span id=short-desc-content>([^<]*)</span>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video description')
-                       return
-               video_description = mobj.group(1).decode('utf-8')
-               if not video_description:
-                       video_description = 'No description available.'
-
-               # Extract video thumbnail
-               if self._downloader.params.get('forcethumbnail', False):
-                       request = urllib2.Request('http://video.google.com/videosearch?q=%s+site:video.google.com&hl=en' % abs(int(video_id)))
-                       try:
-                               webpage = urllib2.urlopen(request).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                               return
-                       mobj = re.search(r'<img class=thumbnail-img (?:.* )?src=(http.*)>', webpage)
-                       if mobj is None:
-                               self._downloader.trouble(u'ERROR: unable to extract video thumbnail')
-                               return
-                       video_thumbnail = mobj.group(1)
-               else:   # we need something to pass to process_info
-                       video_thumbnail = ''
-
-               try:
-                       # Process video information
-                       self._downloader.process_info({
-                               'id':           video_id.decode('utf-8'),
-                               'url':          video_url.decode('utf-8'),
-                               'uploader':     u'NA',
-                               'upload_date':  u'NA',
-                               'title':        video_title,
-                               'stitle':       simple_title,
-                               'ext':          video_extension.decode('utf-8'),
-                               'format':       u'NA',
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class PhotobucketIE(InfoExtractor):
-       """Information extractor for photobucket.com."""
-
-       _VALID_URL = r'(?:http://)?(?:[a-z0-9]+\.)?photobucket\.com/.*[\?\&]current=(.*\.flv)'
-       IE_NAME = u'photobucket'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_download_webpage(self, video_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'[photobucket] %s: Downloading webpage' % video_id)
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[photobucket] %s: Extracting information' % video_id)
-
-       def _real_extract(self, url):
-               # Extract id from URL
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: Invalid URL: %s' % url)
-                       return
-
-               # At this point we have a new video
-               self._downloader.increment_downloads()
-               video_id = mobj.group(1)
-
-               video_extension = 'flv'
-
-               # Retrieve video webpage to extract further information
-               request = urllib2.Request(url)
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                       return
+def updateSelf(downloader, filename):
+    """Update the program file with the latest version from the repository"""
+
+    # TODO: at least, check https certificates
+
+    from zipimport import zipimporter
+
+    API_URL = "https://api.github.com/repos/rg3/youtube-dl/downloads"
+    BIN_URL = "https://github.com/downloads/rg3/youtube-dl/youtube-dl"
+    EXE_URL = "https://github.com/downloads/rg3/youtube-dl/youtube-dl.exe"
+
+    if hasattr(sys, "frozen"): # PY2EXE
+        if not os.access(filename, os.W_OK):
+            sys.exit('ERROR: no write permissions on %s' % filename)
+
+        downloader.to_screen(u'Updating to latest version...')
+
+        urla = compat_urllib_request.urlopen(API_URL)
+        download = filter(lambda x: x["name"] == "youtube-dl.exe", json.loads(urla.read()))
+        if not download:
+            downloader.to_screen(u'ERROR: can\'t find the current version. Please try again later.')
+            return
+        newversion = download[0]["description"].strip()
+        if newversion == __version__:
+            downloader.to_screen(u'youtube-dl is up-to-date (' + __version__ + ')')
+            return
+        urla.close()
+
+        exe = os.path.abspath(filename)
+        directory = os.path.dirname(exe)
+        if not os.access(directory, os.W_OK):
+            sys.exit('ERROR: no write permissions on %s' % directory)
+
+        try:
+            urlh = compat_urllib_request.urlopen(EXE_URL)
+            newcontent = urlh.read()
+            urlh.close()
+            with open(exe + '.new', 'wb') as outf:
+                outf.write(newcontent)
+        except (IOError, OSError) as err:
+            sys.exit('ERROR: unable to download latest version')
+
+        try:
+            bat = os.path.join(directory, 'youtube-dl-updater.bat')
+            b = open(bat, 'w')
+            b.write("""
+echo Updating youtube-dl...
+ping 127.0.0.1 -n 5 -w 1000 > NUL
+move /Y "%s.new" "%s"
+del "%s"
+            \n""" %(exe, exe, bat))
+            b.close()
+
+            os.startfile(bat)
+        except (IOError, OSError) as err:
+            sys.exit('ERROR: unable to overwrite current version')
+
+    elif isinstance(globals().get('__loader__'), zipimporter): # UNIX ZIP
+        if not os.access(filename, os.W_OK):
+            sys.exit('ERROR: no write permissions on %s' % filename)
+
+        downloader.to_screen(u'Updating to latest version...')
+
+        urla = compat_urllib_request.urlopen(API_URL)
+        download = [x for x in json.loads(urla.read().decode('utf8')) if x["name"] == "youtube-dl"]
+        if not download:
+            downloader.to_screen(u'ERROR: can\'t find the current version. Please try again later.')
+            return
+        newversion = download[0]["description"].strip()
+        if newversion == __version__:
+            downloader.to_screen(u'youtube-dl is up-to-date (' + __version__ + ')')
+            return
+        urla.close()
+
+        try:
+            urlh = compat_urllib_request.urlopen(BIN_URL)
+            newcontent = urlh.read()
+            urlh.close()
+        except (IOError, OSError) as err:
+            sys.exit('ERROR: unable to download latest version')
+
+        try:
+            with open(filename, 'wb') as outf:
+                outf.write(newcontent)
+        except (IOError, OSError) as err:
+            sys.exit('ERROR: unable to overwrite current version')
+
+    else:
+        downloader.to_screen(u'It looks like you installed youtube-dl with pip or setup.py. Please use that to update.')
+        return
+
+    downloader.to_screen(u'Updated youtube-dl. Restart youtube-dl to use the new version.')

 
 

-               # Extract URL, uploader, and title from webpage
-               self.report_extraction(video_id)
-               mobj = re.search(r'<link rel="video_src" href=".*\?file=([^"]+)" />', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract media URL')
-                       return
-               mediaURL = urllib.unquote(mobj.group(1))
+def parseOpts():
+    def _readOptions(filename_bytes):
+        try:
+            optionf = open(filename_bytes)
+        except IOError:
+            return [] # silently skip if file is not present
+        try:
+            res = []
+            for l in optionf:
+                res += shlex.split(l, comments=True)
+        finally:
+            optionf.close()
+        return res
+
+    def _format_option_string(option):
+        ''' ('-o', '--option') -> -o, --format METAVAR'''
+
+        opts = []
+
+        if option._short_opts:
+            opts.append(option._short_opts[0])
+        if option._long_opts:
+            opts.append(option._long_opts[0])
+        if len(opts) > 1:
+            opts.insert(1, ', ')
+
+        if option.takes_value(): opts.append(' %s' % option.metavar)
+
+        return "".join(opts)
+
+    def _find_term_columns():
+        columns = os.environ.get('COLUMNS', None)
+        if columns:
+            return int(columns)
+
+        try:
+            sp = subprocess.Popen(['stty', 'size'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            out,err = sp.communicate()
+            return int(out.split()[1])
+        except:
+            pass
+        return None
+
+    max_width = 80
+    max_help_position = 80
+
+    # No need to wrap help messages if we're on a wide console
+    columns = _find_term_columns()
+    if columns: max_width = columns
+
+    fmt = optparse.IndentedHelpFormatter(width=max_width, max_help_position=max_help_position)
+    fmt.format_option_strings = _format_option_string
+
+    kw = {
+        'version'   : __version__,
+        'formatter' : fmt,
+        'usage' : '%prog [options] url [url...]',
+        'conflict_handler' : 'resolve',
+    }
+
+    parser = optparse.OptionParser(**kw)
+
+    # option groups
+    general        = optparse.OptionGroup(parser, 'General Options')
+    selection      = optparse.OptionGroup(parser, 'Video Selection')
+    authentication = optparse.OptionGroup(parser, 'Authentication Options')
+    video_format   = optparse.OptionGroup(parser, 'Video Format Options')
+    postproc       = optparse.OptionGroup(parser, 'Post-processing Options')
+    filesystem     = optparse.OptionGroup(parser, 'Filesystem Options')
+    verbosity      = optparse.OptionGroup(parser, 'Verbosity / Simulation Options')
+
+    general.add_option('-h', '--help',
+            action='help', help='print this help text and exit')
+    general.add_option('-v', '--version',
+            action='version', help='print program version and exit')
+    general.add_option('-U', '--update',
+            action='store_true', dest='update_self', help='update this program to latest version')
+    general.add_option('-i', '--ignore-errors',
+            action='store_true', dest='ignoreerrors', help='continue on download errors', default=False)
+    general.add_option('-r', '--rate-limit',
+            dest='ratelimit', metavar='LIMIT', help='download rate limit (e.g. 50k or 44.6m)')
+    general.add_option('-R', '--retries',
+            dest='retries', metavar='RETRIES', help='number of retries (default is %default)', default=10)
+    general.add_option('--buffer-size',
+            dest='buffersize', metavar='SIZE', help='size of download buffer (e.g. 1024 or 16k) (default is %default)', default="1024")
+    general.add_option('--no-resize-buffer',
+            action='store_true', dest='noresizebuffer',
+            help='do not automatically adjust the buffer size. By default, the buffer size is automatically resized from an initial value of SIZE.', default=False)
+    general.add_option('--dump-user-agent',
+            action='store_true', dest='dump_user_agent',
+            help='display the current browser identification', default=False)
+    general.add_option('--user-agent',
+            dest='user_agent', help='specify a custom user agent', metavar='UA')
+    general.add_option('--list-extractors',
+            action='store_true', dest='list_extractors',
+            help='List all supported extractors and the URLs they would handle', default=False)
+    general.add_option('--test', action='store_true', dest='test', default=False, help=optparse.SUPPRESS_HELP)
+
+    selection.add_option('--playlist-start',
+            dest='playliststart', metavar='NUMBER', help='playlist video to start at (default is %default)', default=1)
+    selection.add_option('--playlist-end',
+            dest='playlistend', metavar='NUMBER', help='playlist video to end at (default is last)', default=-1)
+    selection.add_option('--match-title', dest='matchtitle', metavar='REGEX',help='download only matching titles (regex or caseless sub-string)')
+    selection.add_option('--reject-title', dest='rejecttitle', metavar='REGEX',help='skip download for matching titles (regex or caseless sub-string)')
+    selection.add_option('--max-downloads', metavar='NUMBER', dest='max_downloads', help='Abort after downloading NUMBER files', default=None)
+
+    authentication.add_option('-u', '--username',
+            dest='username', metavar='USERNAME', help='account username')
+    authentication.add_option('-p', '--password',
+            dest='password', metavar='PASSWORD', help='account password')
+    authentication.add_option('-n', '--netrc',
+            action='store_true', dest='usenetrc', help='use .netrc authentication data', default=False)
+
+
+    video_format.add_option('-f', '--format',
+            action='store', dest='format', metavar='FORMAT', help='video format code')
+    video_format.add_option('--all-formats',
+            action='store_const', dest='format', help='download all available video formats', const='all')
+    video_format.add_option('--prefer-free-formats',
+            action='store_true', dest='prefer_free_formats', default=False, help='prefer free video formats unless a specific one is requested')
+    video_format.add_option('--max-quality',
+            action='store', dest='format_limit', metavar='FORMAT', help='highest quality format to download')
+    video_format.add_option('-F', '--list-formats',
+            action='store_true', dest='listformats', help='list all available formats (currently youtube only)')
+    video_format.add_option('--write-srt',
+            action='store_true', dest='writesubtitles',
+            help='write video closed captions to a .srt file (currently youtube only)', default=False)
+    video_format.add_option('--srt-lang',
+            action='store', dest='subtitleslang', metavar='LANG',
+            help='language of the closed captions to download (optional) use IETF language tags like \'en\'')
+
+
+    verbosity.add_option('-q', '--quiet',
+            action='store_true', dest='quiet', help='activates quiet mode', default=False)
+    verbosity.add_option('-s', '--simulate',
+            action='store_true', dest='simulate', help='do not download the video and do not write anything to disk', default=False)
+    verbosity.add_option('--skip-download',
+            action='store_true', dest='skip_download', help='do not download the video', default=False)
+    verbosity.add_option('-g', '--get-url',
+            action='store_true', dest='geturl', help='simulate, quiet but print URL', default=False)
+    verbosity.add_option('-e', '--get-title',
+            action='store_true', dest='gettitle', help='simulate, quiet but print title', default=False)
+    verbosity.add_option('--get-thumbnail',
+            action='store_true', dest='getthumbnail',
+            help='simulate, quiet but print thumbnail URL', default=False)
+    verbosity.add_option('--get-description',
+            action='store_true', dest='getdescription',
+            help='simulate, quiet but print video description', default=False)
+    verbosity.add_option('--get-filename',
+            action='store_true', dest='getfilename',
+            help='simulate, quiet but print output filename', default=False)
+    verbosity.add_option('--get-format',
+            action='store_true', dest='getformat',
+            help='simulate, quiet but print output format', default=False)
+    verbosity.add_option('--no-progress',
+            action='store_true', dest='noprogress', help='do not print progress bar', default=False)
+    verbosity.add_option('--console-title',
+            action='store_true', dest='consoletitle',
+            help='display progress in console titlebar', default=False)
+    verbosity.add_option('-v', '--verbose',
+            action='store_true', dest='verbose', help='print various debugging information', default=False)
+
+
+    filesystem.add_option('-t', '--title',
+            action='store_true', dest='usetitle', help='use title in file name', default=False)
+    filesystem.add_option('--id',
+            action='store_true', dest='useid', help='use video ID in file name', default=False)
+    filesystem.add_option('-l', '--literal',
+            action='store_true', dest='usetitle', help='[deprecated] alias of --title', default=False)
+    filesystem.add_option('-A', '--auto-number',
+            action='store_true', dest='autonumber',
+            help='number downloaded files starting from 00000', default=False)
+    filesystem.add_option('-o', '--output',
+            dest='outtmpl', metavar='TEMPLATE', help='output filename template. Use %(title)s to get the title, %(uploader)s for the uploader name, %(autonumber)s to get an automatically incremented number, %(ext)s for the filename extension, %(upload_date)s for the upload date (YYYYMMDD), %(extractor)s for the provider (youtube, metacafe, etc), %(id)s for the video id and %% for a literal percent. Use - to output to stdout. Can also be used to download to a different directory, for example with -o \'/my/downloads/%(uploader)s/%(title)s-%(id)s.%(ext)s\' .')
+    filesystem.add_option('--restrict-filenames',
+            action='store_true', dest='restrictfilenames',
+            help='Restrict filenames to only ASCII characters, and avoid "&" and spaces in filenames', default=False)
+    filesystem.add_option('-a', '--batch-file',
+            dest='batchfile', metavar='FILE', help='file containing URLs to download (\'-\' for stdin)')
+    filesystem.add_option('-w', '--no-overwrites',
+            action='store_true', dest='nooverwrites', help='do not overwrite files', default=False)
+    filesystem.add_option('-c', '--continue',
+            action='store_true', dest='continue_dl', help='resume partially downloaded files', default=True)
+    filesystem.add_option('--no-continue',
+            action='store_false', dest='continue_dl',
+            help='do not resume partially downloaded files (restart from beginning)')
+    filesystem.add_option('--cookies',
+            dest='cookiefile', metavar='FILE', help='file to read cookies from and dump cookie jar in')
+    filesystem.add_option('--no-part',
+            action='store_true', dest='nopart', help='do not use .part files', default=False)
+    filesystem.add_option('--no-mtime',
+            action='store_false', dest='updatetime',
+            help='do not use the Last-modified header to set the file modification time', default=True)
+    filesystem.add_option('--write-description',
+            action='store_true', dest='writedescription',
+            help='write video description to a .description file', default=False)
+    filesystem.add_option('--write-info-json',
+            action='store_true', dest='writeinfojson',
+            help='write video metadata to a .info.json file', default=False)
+
+
+    postproc.add_option('-x', '--extract-audio', action='store_true', dest='extractaudio', default=False,
+            help='convert video files to audio-only files (requires ffmpeg or avconv and ffprobe or avprobe)')
+    postproc.add_option('--audio-format', metavar='FORMAT', dest='audioformat', default='best',
+            help='"best", "aac", "vorbis", "mp3", "m4a", or "wav"; best by default')
+    postproc.add_option('--audio-quality', metavar='QUALITY', dest='audioquality', default='5',
+            help='ffmpeg/avconv audio quality specification, insert a value between 0 (better) and 9 (worse) for VBR or a specific bitrate like 128K (default 5)')
+    postproc.add_option('-k', '--keep-video', action='store_true', dest='keepvideo', default=False,
+            help='keeps the video file on disk after the post-processing; the video is erased by default')
+
+
+    parser.add_option_group(general)
+    parser.add_option_group(selection)
+    parser.add_option_group(filesystem)
+    parser.add_option_group(verbosity)
+    parser.add_option_group(video_format)
+    parser.add_option_group(authentication)
+    parser.add_option_group(postproc)
+
+    xdg_config_home = os.environ.get('XDG_CONFIG_HOME')
+    if xdg_config_home:
+        userConf = os.path.join(xdg_config_home, 'youtube-dl.conf')
+    else:
+        userConf = os.path.join(os.path.expanduser('~'), '.config', 'youtube-dl.conf')
+    argv = _readOptions('/etc/youtube-dl.conf') + _readOptions(userConf) + sys.argv[1:]
+    opts, args = parser.parse_args(argv)
+
+    return parser, opts, args

 
 

-               video_url = mediaURL
+def gen_extractors():
+    """ Return a list of an instance of every supported extractor.
+    The order does matter; the first extractor matched is the one handling the URL.
+    """
+    return [
+        YoutubePlaylistIE(),
+        YoutubeChannelIE(),
+        YoutubeUserIE(),
+        YoutubeSearchIE(),
+        YoutubeIE(),
+        MetacafeIE(),
+        DailymotionIE(),
+        GoogleIE(),
+        GoogleSearchIE(),
+        PhotobucketIE(),
+        YahooIE(),
+        YahooSearchIE(),
+        DepositFilesIE(),
+        FacebookIE(),
+        BlipTVUserIE(),
+        BlipTVIE(),
+        VimeoIE(),
+        MyVideoIE(),
+        ComedyCentralIE(),
+        EscapistIE(),
+        CollegeHumorIE(),
+        XVideosIE(),
+        SoundcloudIE(),
+        InfoQIE(),
+        MixcloudIE(),
+        StanfordOpenClassroomIE(),
+        MTVIE(),
+        YoukuIE(),
+        XNXXIE(),
+        GooglePlusIE(),
+        ArteTvIE(),
+        GenericIE()
+    ]

 
 

-               mobj = re.search(r'<title>(.*) video by (.*) - Photobucket</title>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-               video_title = sanitize_title(video_title)
-               simple_title = _simplify_title(vide_title)
-
-               video_uploader = mobj.group(2).decode('utf-8')
-
-               try:
-                       # Process video information
-                       self._downloader.process_info({
-                               'id':           video_id.decode('utf-8'),
-                               'url':          video_url.decode('utf-8'),
-                               'uploader':     video_uploader,
-                               'upload_date':  u'NA',
-                               'title':        video_title,
-                               'stitle':       simple_title,
-                               'ext':          video_extension.decode('utf-8'),
-                               'format':       u'NA',
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class YahooIE(InfoExtractor):
-       """Information extractor for video.yahoo.com."""
-
-       # _VALID_URL matches all Yahoo! Video URLs
-       # _VPAGE_URL matches only the extractable '/watch/' URLs
-       _VALID_URL = r'(?:http://)?(?:[a-z]+\.)?video\.yahoo\.com/(?:watch|network)/([0-9]+)(?:/|\?v=)([0-9]+)(?:[#\?].*)?'
-       _VPAGE_URL = r'(?:http://)?video\.yahoo\.com/watch/([0-9]+)/([0-9]+)(?:[#\?].*)?'
-       IE_NAME = u'video.yahoo'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_download_webpage(self, video_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'[video.yahoo] %s: Downloading webpage' % video_id)
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[video.yahoo] %s: Extracting information' % video_id)
-
-       def _real_extract(self, url, new_video=True):
-               # Extract ID from URL
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: Invalid URL: %s' % url)
-                       return
-
-               # At this point we have a new video
-               self._downloader.increment_downloads()
-               video_id = mobj.group(2)
-               video_extension = 'flv'
-
-               # Rewrite valid but non-extractable URLs as
-               # extractable English language /watch/ URLs
-               if re.match(self._VPAGE_URL, url) is None:
-                       request = urllib2.Request(url)
-                       try:
-                               webpage = urllib2.urlopen(request).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                               return
-
-                       mobj = re.search(r'\("id", "([0-9]+)"\);', webpage)
-                       if mobj is None:
-                               self._downloader.trouble(u'ERROR: Unable to extract id field')
-                               return
-                       yahoo_id = mobj.group(1)
-
-                       mobj = re.search(r'\("vid", "([0-9]+)"\);', webpage)
-                       if mobj is None:
-                               self._downloader.trouble(u'ERROR: Unable to extract vid field')
-                               return
-                       yahoo_vid = mobj.group(1)
-
-                       url = 'http://video.yahoo.com/watch/%s/%s' % (yahoo_vid, yahoo_id)
-                       return self._real_extract(url, new_video=False)
-
-               # Retrieve video webpage to extract further information
-               request = urllib2.Request(url)
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                       return
-
-               # Extract uploader and title from webpage
-               self.report_extraction(video_id)
-               mobj = re.search(r'<meta name="title" content="(.*)" />', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-               simple_title = _simplify_title(video_title)
-
-               mobj = re.search(r'<h2 class="ti-5"><a href="http://video\.yahoo\.com/(people|profile)/[0-9]+" beacon=".*">(.*)</a></h2>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video uploader')
-                       return
-               video_uploader = mobj.group(1).decode('utf-8')
-
-               # Extract video thumbnail
-               mobj = re.search(r'<link rel="image_src" href="(.*)" />', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video thumbnail')
-                       return
-               video_thumbnail = mobj.group(1).decode('utf-8')
-
-               # Extract video description
-               mobj = re.search(r'<meta name="description" content="(.*)" />', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video description')
-                       return
-               video_description = mobj.group(1).decode('utf-8')
-               if not video_description:
-                       video_description = 'No description available.'
-
-               # Extract video height and width
-               mobj = re.search(r'<meta name="video_height" content="([0-9]+)" />', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video height')
-                       return
-               yv_video_height = mobj.group(1)
-
-               mobj = re.search(r'<meta name="video_width" content="([0-9]+)" />', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video width')
-                       return
-               yv_video_width = mobj.group(1)
-
-               # Retrieve video playlist to extract media URL
-               # I'm not completely sure what all these options are, but we
-               # seem to need most of them, otherwise the server sends a 401.
-               yv_lg = 'R0xx6idZnW2zlrKP8xxAIR'  # not sure what this represents
-               yv_bitrate = '700'  # according to Wikipedia this is hard-coded
-               request = urllib2.Request('http://cosmos.bcst.yahoo.com/up/yep/process/getPlaylistFOP.php?node_id=' + video_id +
-                               '&tech=flash&mode=playlist&lg=' + yv_lg + '&bitrate=' + yv_bitrate + '&vidH=' + yv_video_height +
-                               '&vidW=' + yv_video_width + '&swf=as3&rd=video.yahoo.com&tk=null&adsupported=v1,v2,&eventid=1301797')
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                       return
-
-               # Extract media URL from playlist XML
-               mobj = re.search(r'<STREAM APP="(http://.*)" FULLPATH="/?(/.*\.flv\?[^"]*)"', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: Unable to extract media URL')
-                       return
-               video_url = urllib.unquote(mobj.group(1) + mobj.group(2)).decode('utf-8')
-               video_url = re.sub(r'(?u)&(.+?);', htmlentity_transform, video_url)
-
-               try:
-                       # Process video information
-                       self._downloader.process_info({
-                               'id':           video_id.decode('utf-8'),
-                               'url':          video_url,
-                               'uploader':     video_uploader,
-                               'upload_date':  u'NA',
-                               'title':        video_title,
-                               'stitle':       simple_title,
-                               'ext':          video_extension.decode('utf-8'),
-                               'thumbnail':    video_thumbnail.decode('utf-8'),
-                               'description':  video_description,
-                               'thumbnail':    video_thumbnail,
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class VimeoIE(InfoExtractor):
-       """Information extractor for vimeo.com."""
-
-       # _VALID_URL matches Vimeo URLs
-       _VALID_URL = r'(?:https?://)?(?:(?:www|player).)?vimeo\.com/(?:groups/[^/]+/)?(?:videos?/)?([0-9]+)'
-       IE_NAME = u'vimeo'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_download_webpage(self, video_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'[vimeo] %s: Downloading webpage' % video_id)
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[vimeo] %s: Extracting information' % video_id)
-
-       def _real_extract(self, url, new_video=True):
-               # Extract ID from URL
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: Invalid URL: %s' % url)
-                       return
-
-               # At this point we have a new video
-               self._downloader.increment_downloads()
-               video_id = mobj.group(1)
-
-               # Retrieve video webpage to extract further information
-               request = urllib2.Request("http://vimeo.com/moogaloop/load/clip:%s" % video_id, None, std_headers)
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                       return
-
-               # Now we begin extracting as much information as we can from what we
-               # retrieved. First we extract the information common to all extractors,
-               # and latter we extract those that are Vimeo specific.
-               self.report_extraction(video_id)
-
-               # Extract title
-               mobj = re.search(r'<caption>(.*?)</caption>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-               simple_title = _simplify_title(video_title)
-
-               # Extract uploader
-               mobj = re.search(r'<uploader_url>http://vimeo.com/(.*?)</uploader_url>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video uploader')
-                       return
-               video_uploader = mobj.group(1).decode('utf-8')
-
-               # Extract video thumbnail
-               mobj = re.search(r'<thumbnail>(.*?)</thumbnail>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video thumbnail')
-                       return
-               video_thumbnail = mobj.group(1).decode('utf-8')
-
-               # # Extract video description
-               # mobj = re.search(r'<meta property="og:description" content="(.*)" />', webpage)
-               # if mobj is None:
-               #       self._downloader.trouble(u'ERROR: unable to extract video description')
-               #       return
-               # video_description = mobj.group(1).decode('utf-8')
-               # if not video_description: video_description = 'No description available.'
-               video_description = 'Foo.'
-
-               # Vimeo specific: extract request signature
-               mobj = re.search(r'<request_signature>(.*?)</request_signature>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract request signature')
-                       return
-               sig = mobj.group(1).decode('utf-8')
-
-               # Vimeo specific: extract video quality information
-               mobj = re.search(r'<isHD>(\d+)</isHD>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video quality information')
-                       return
-               quality = mobj.group(1).decode('utf-8')
-
-               if int(quality) == 1:
-                       quality = 'hd'
-               else:
-                       quality = 'sd'
-
-               # Vimeo specific: Extract request signature expiration
-               mobj = re.search(r'<request_signature_expires>(.*?)</request_signature_expires>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract request signature expiration')
-                       return
-               sig_exp = mobj.group(1).decode('utf-8')
-
-               video_url = "http://vimeo.com/moogaloop/play/clip:%s/%s/%s/?q=%s" % (video_id, sig, sig_exp, quality)
-
-               try:
-                       # Process video information
-                       self._downloader.process_info({
-                               'id':           video_id.decode('utf-8'),
-                               'url':          video_url,
-                               'uploader':     video_uploader,
-                               'upload_date':  u'NA',
-                               'title':        video_title,
-                               'stitle':       simple_title,
-                               'ext':          u'mp4',
-                               'thumbnail':    video_thumbnail.decode('utf-8'),
-                               'description':  video_description,
-                               'thumbnail':    video_thumbnail,
-                               'description':  video_description,
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError:
-                       self._downloader.trouble(u'ERROR: unable to download video')
-
-
-class GenericIE(InfoExtractor):
-       """Generic last-resort information extractor."""
-
-       _VALID_URL = r'.*'
-       IE_NAME = u'generic'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_download_webpage(self, video_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'WARNING: Falling back on generic information extractor.')
-               self._downloader.to_screen(u'[generic] %s: Downloading webpage' % video_id)
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[generic] %s: Extracting information' % video_id)
-
-       def _real_extract(self, url):
-               # At this point we have a new video
-               self._downloader.increment_downloads()
-
-               video_id = url.split('/')[-1]
-               request = urllib2.Request(url)
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                       return
-               except ValueError, err:
-                       # since this is the last-resort InfoExtractor, if
-                       # this error is thrown, it'll be thrown here
-                       self._downloader.trouble(u'ERROR: Invalid URL: %s' % url)
-                       return
-
-               self.report_extraction(video_id)
-               # Start with something easy: JW Player in SWFObject
-               mobj = re.search(r'flashvars: [\'"](?:.*&)?file=(http[^\'"&]*)', webpage)
-               if mobj is None:
-                       # Broaden the search a little bit
-                       mobj = re.search(r'[^A-Za-z0-9]?(?:file|source)=(http[^\'"&]*)', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: Invalid URL: %s' % url)
-                       return
-
-               # It's possible that one of the regexes
-               # matched, but returned an empty group:
-               if mobj.group(1) is None:
-                       self._downloader.trouble(u'ERROR: Invalid URL: %s' % url)
-                       return
-
-               video_url = urllib.unquote(mobj.group(1))
-               video_id = os.path.basename(video_url)
-
-               # here's a fun little line of code for you:
-               video_extension = os.path.splitext(video_id)[1][1:]
-               video_id = os.path.splitext(video_id)[0]
-
-               # it's tempting to parse this further, but you would
-               # have to take into account all the variations like
-               #   Video Title - Site Name
-               #   Site Name | Video Title
-               #   Video Title - Tagline | Site Name
-               # and so on and so forth; it's just not practical
-               mobj = re.search(r'<title>(.*)</title>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-               video_title = sanitize_title(video_title)
-               simple_title = _simplify_title(video_title)
-
-               # video uploader is domain name
-               mobj = re.match(r'(?:https?://)?([^/]*)/.*', url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract title')
-                       return
-               video_uploader = mobj.group(1).decode('utf-8')
-
-               try:
-                       # Process video information
-                       self._downloader.process_info({
-                               'id':           video_id.decode('utf-8'),
-                               'url':          video_url.decode('utf-8'),
-                               'uploader':     video_uploader,
-                               'upload_date':  u'NA',
-                               'title':        video_title,
-                               'stitle':       simple_title,
-                               'ext':          video_extension.decode('utf-8'),
-                               'format':       u'NA',
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class YoutubeSearchIE(InfoExtractor):
-       """Information Extractor for YouTube search queries."""
-       _VALID_URL = r'ytsearch(\d+|all)?:[\s\S]+'
-       _TEMPLATE_URL = 'http://www.youtube.com/results?search_query=%s&page=%s&gl=US&hl=en'
-       _VIDEO_INDICATOR = r'href="/watch\?v=.+?"'
-       _MORE_PAGES_INDICATOR = r'(?m)>\s*Next\s*</a>'
-       _youtube_ie = None
-       _max_youtube_results = 1000
-       IE_NAME = u'youtube:search'
-
-       def __init__(self, youtube_ie, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-               self._youtube_ie = youtube_ie
-
-       def report_download_page(self, query, pagenum):
-               """Report attempt to download playlist page with given number."""
-               query = query.decode(preferredencoding())
-               self._downloader.to_screen(u'[youtube] query "%s": Downloading page %s' % (query, pagenum))
-
-       def _real_initialize(self):
-               self._youtube_ie.initialize()
-
-       def _real_extract(self, query):
-               mobj = re.match(self._VALID_URL, query)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid search query "%s"' % query)
-                       return
-
-               prefix, query = query.split(':')
-               prefix = prefix[8:]
-               query = query.encode('utf-8')
-               if prefix == '':
-                       self._download_n_results(query, 1)
-                       return
-               elif prefix == 'all':
-                       self._download_n_results(query, self._max_youtube_results)
-                       return
-               else:
-                       try:
-                               n = long(prefix)
-                               if n <= 0:
-                                       self._downloader.trouble(u'ERROR: invalid download number %s for query "%s"' % (n, query))
-                                       return
-                               elif n > self._max_youtube_results:
-                                       self._downloader.to_stderr(u'WARNING: ytsearch returns max %i results (you requested %i)' % (self._max_youtube_results, n))
-                                       n = self._max_youtube_results
-                               self._download_n_results(query, n)
-                               return
-                       except ValueError: # parsing prefix as integer fails
-                               self._download_n_results(query, 1)
-                               return
-
-       def _download_n_results(self, query, n):
-               """Downloads a specified number of results for a query"""
-
-               video_ids = []
-               already_seen = set()
-               pagenum = 1
-
-               while True:
-                       self.report_download_page(query, pagenum)
-                       result_url = self._TEMPLATE_URL % (urllib.quote_plus(query), pagenum)
-                       request = urllib2.Request(result_url)
-                       try:
-                               page = urllib2.urlopen(request).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download webpage: %s' % str(err))
-                               return
-
-                       # Extract video identifiers
-                       for mobj in re.finditer(self._VIDEO_INDICATOR, page):
-                               video_id = page[mobj.span()[0]:mobj.span()[1]].split('=')[2][:-1]
-                               if video_id not in already_seen:
-                                       video_ids.append(video_id)
-                                       already_seen.add(video_id)
-                                       if len(video_ids) == n:
-                                               # Specified n videos reached
-                                               for id in video_ids:
-                                                       self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id)
-                                               return
-
-                       if re.search(self._MORE_PAGES_INDICATOR, page) is None:
-                               for id in video_ids:
-                                       self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id)
-                               return
-
-                       pagenum = pagenum + 1
-
-
-class GoogleSearchIE(InfoExtractor):
-       """Information Extractor for Google Video search queries."""
-       _VALID_URL = r'gvsearch(\d+|all)?:[\s\S]+'
-       _TEMPLATE_URL = 'http://video.google.com/videosearch?q=%s+site:video.google.com&start=%s&hl=en'
-       _VIDEO_INDICATOR = r'videoplay\?docid=([^\&>]+)\&'
-       _MORE_PAGES_INDICATOR = r'<span>Next</span>'
-       _google_ie = None
-       _max_google_results = 1000
-       IE_NAME = u'video.google:search'
-
-       def __init__(self, google_ie, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-               self._google_ie = google_ie
-
-       def report_download_page(self, query, pagenum):
-               """Report attempt to download playlist page with given number."""
-               query = query.decode(preferredencoding())
-               self._downloader.to_screen(u'[video.google] query "%s": Downloading page %s' % (query, pagenum))
-
-       def _real_initialize(self):
-               self._google_ie.initialize()
-
-       def _real_extract(self, query):
-               mobj = re.match(self._VALID_URL, query)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid search query "%s"' % query)
-                       return
-
-               prefix, query = query.split(':')
-               prefix = prefix[8:]
-               query = query.encode('utf-8')
-               if prefix == '':
-                       self._download_n_results(query, 1)
-                       return
-               elif prefix == 'all':
-                       self._download_n_results(query, self._max_google_results)
-                       return
-               else:
-                       try:
-                               n = long(prefix)
-                               if n <= 0:
-                                       self._downloader.trouble(u'ERROR: invalid download number %s for query "%s"' % (n, query))
-                                       return
-                               elif n > self._max_google_results:
-                                       self._downloader.to_stderr(u'WARNING: gvsearch returns max %i results (you requested %i)' % (self._max_google_results, n))
-                                       n = self._max_google_results
-                               self._download_n_results(query, n)
-                               return
-                       except ValueError: # parsing prefix as integer fails
-                               self._download_n_results(query, 1)
-                               return
-
-       def _download_n_results(self, query, n):
-               """Downloads a specified number of results for a query"""
-
-               video_ids = []
-               already_seen = set()
-               pagenum = 1
-
-               while True:
-                       self.report_download_page(query, pagenum)
-                       result_url = self._TEMPLATE_URL % (urllib.quote_plus(query), pagenum)
-                       request = urllib2.Request(result_url)
-                       try:
-                               page = urllib2.urlopen(request).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download webpage: %s' % str(err))
-                               return
-
-                       # Extract video identifiers
-                       for mobj in re.finditer(self._VIDEO_INDICATOR, page):
-                               video_id = mobj.group(1)
-                               if video_id not in already_seen:
-                                       video_ids.append(video_id)
-                                       already_seen.add(video_id)
-                                       if len(video_ids) == n:
-                                               # Specified n videos reached
-                                               for id in video_ids:
-                                                       self._google_ie.extract('http://video.google.com/videoplay?docid=%s' % id)
-                                               return
-
-                       if re.search(self._MORE_PAGES_INDICATOR, page) is None:
-                               for id in video_ids:
-                                       self._google_ie.extract('http://video.google.com/videoplay?docid=%s' % id)
-                               return
-
-                       pagenum = pagenum + 1
-
-
-class YahooSearchIE(InfoExtractor):
-       """Information Extractor for Yahoo! Video search queries."""
-       _VALID_URL = r'yvsearch(\d+|all)?:[\s\S]+'
-       _TEMPLATE_URL = 'http://video.yahoo.com/search/?p=%s&o=%s'
-       _VIDEO_INDICATOR = r'href="http://video\.yahoo\.com/watch/([0-9]+/[0-9]+)"'
-       _MORE_PAGES_INDICATOR = r'\s*Next'
-       _yahoo_ie = None
-       _max_yahoo_results = 1000
-       IE_NAME = u'video.yahoo:search'
-
-       def __init__(self, yahoo_ie, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-               self._yahoo_ie = yahoo_ie
-
-       def report_download_page(self, query, pagenum):
-               """Report attempt to download playlist page with given number."""
-               query = query.decode(preferredencoding())
-               self._downloader.to_screen(u'[video.yahoo] query "%s": Downloading page %s' % (query, pagenum))
-
-       def _real_initialize(self):
-               self._yahoo_ie.initialize()
-
-       def _real_extract(self, query):
-               mobj = re.match(self._VALID_URL, query)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid search query "%s"' % query)
-                       return
-
-               prefix, query = query.split(':')
-               prefix = prefix[8:]
-               query = query.encode('utf-8')
-               if prefix == '':
-                       self._download_n_results(query, 1)
-                       return
-               elif prefix == 'all':
-                       self._download_n_results(query, self._max_yahoo_results)
-                       return
-               else:
-                       try:
-                               n = long(prefix)
-                               if n <= 0:
-                                       self._downloader.trouble(u'ERROR: invalid download number %s for query "%s"' % (n, query))
-                                       return
-                               elif n > self._max_yahoo_results:
-                                       self._downloader.to_stderr(u'WARNING: yvsearch returns max %i results (you requested %i)' % (self._max_yahoo_results, n))
-                                       n = self._max_yahoo_results
-                               self._download_n_results(query, n)
-                               return
-                       except ValueError: # parsing prefix as integer fails
-                               self._download_n_results(query, 1)
-                               return
-
-       def _download_n_results(self, query, n):
-               """Downloads a specified number of results for a query"""
-
-               video_ids = []
-               already_seen = set()
-               pagenum = 1
-
-               while True:
-                       self.report_download_page(query, pagenum)
-                       result_url = self._TEMPLATE_URL % (urllib.quote_plus(query), pagenum)
-                       request = urllib2.Request(result_url)
-                       try:
-                               page = urllib2.urlopen(request).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download webpage: %s' % str(err))
-                               return
-
-                       # Extract video identifiers
-                       for mobj in re.finditer(self._VIDEO_INDICATOR, page):
-                               video_id = mobj.group(1)
-                               if video_id not in already_seen:
-                                       video_ids.append(video_id)
-                                       already_seen.add(video_id)
-                                       if len(video_ids) == n:
-                                               # Specified n videos reached
-                                               for id in video_ids:
-                                                       self._yahoo_ie.extract('http://video.yahoo.com/watch/%s' % id)
-                                               return
-
-                       if re.search(self._MORE_PAGES_INDICATOR, page) is None:
-                               for id in video_ids:
-                                       self._yahoo_ie.extract('http://video.yahoo.com/watch/%s' % id)
-                               return
-
-                       pagenum = pagenum + 1
-
-
-class YoutubePlaylistIE(InfoExtractor):
-       """Information Extractor for YouTube playlists."""
-
-       _VALID_URL = r'(?:https?://)?(?:\w+\.)?youtube\.com/(?:(?:course|view_play_list|my_playlists|artist|playlist)\?.*?(p|a|list)=|user/.*?/user/|p/|user/.*?#[pg]/c/)(?:PL)?([0-9A-Za-z-_]+)(?:/.*?/([0-9A-Za-z_-]+))?.*'
-       _TEMPLATE_URL = 'http://www.youtube.com/%s?%s=%s&page=%s&gl=US&hl=en'
-       _VIDEO_INDICATOR = r'/watch\?v=(.+?)&'
-       _MORE_PAGES_INDICATOR = r'(?m)>\s*Next\s*</a>'
-       _youtube_ie = None
-       IE_NAME = u'youtube:playlist'
-
-       def __init__(self, youtube_ie, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-               self._youtube_ie = youtube_ie
-
-       def report_download_page(self, playlist_id, pagenum):
-               """Report attempt to download playlist page with given number."""
-               self._downloader.to_screen(u'[youtube] PL %s: Downloading page #%s' % (playlist_id, pagenum))
-
-       def _real_initialize(self):
-               self._youtube_ie.initialize()
-
-       def _real_extract(self, url):
-               # Extract playlist id
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid url: %s' % url)
-                       return
-
-               # Single video case
-               if mobj.group(3) is not None:
-                       self._youtube_ie.extract(mobj.group(3))
-                       return
-
-               # Download playlist pages
-               # prefix is 'p' as default for playlists but there are other types that need extra care
-               playlist_prefix = mobj.group(1)
-               if playlist_prefix == 'a':
-                       playlist_access = 'artist'
-               else:
-                       playlist_prefix = 'p'
-                       playlist_access = 'view_play_list'
-               playlist_id = mobj.group(2)
-               video_ids = []
-               pagenum = 1
-
-               while True:
-                       self.report_download_page(playlist_id, pagenum)
-                       url = self._TEMPLATE_URL % (playlist_access, playlist_prefix, playlist_id, pagenum)
-                       request = urllib2.Request(url)
-                       try:
-                               page = urllib2.urlopen(request).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download webpage: %s' % str(err))
-                               return
-
-                       # Extract video identifiers
-                       ids_in_page = []
-                       for mobj in re.finditer(self._VIDEO_INDICATOR, page):
-                               if mobj.group(1) not in ids_in_page:
-                                       ids_in_page.append(mobj.group(1))
-                       video_ids.extend(ids_in_page)
-
-                       if re.search(self._MORE_PAGES_INDICATOR, page) is None:
-                               break
-                       pagenum = pagenum + 1
-
-               playliststart = self._downloader.params.get('playliststart', 1) - 1
-               playlistend = self._downloader.params.get('playlistend', -1)
-               video_ids = video_ids[playliststart:playlistend]
-
-               for id in video_ids:
-                       self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id)
-               return
-
-
-class YoutubeUserIE(InfoExtractor):
-       """Information Extractor for YouTube users."""
-
-       _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/user/)|ytuser:)([A-Za-z0-9_-]+)'
-       _TEMPLATE_URL = 'http://gdata.youtube.com/feeds/api/users/%s'
-       _GDATA_PAGE_SIZE = 50
-       _GDATA_URL = 'http://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d'
-       _VIDEO_INDICATOR = r'/watch\?v=(.+?)[\<&]'
-       _youtube_ie = None
-       IE_NAME = u'youtube:user'
-
-       def __init__(self, youtube_ie, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-               self._youtube_ie = youtube_ie
-
-       def report_download_page(self, username, start_index):
-               """Report attempt to download user page."""
-               self._downloader.to_screen(u'[youtube] user %s: Downloading video ids from %d to %d' %
-                               (username, start_index, start_index + self._GDATA_PAGE_SIZE))
-
-       def _real_initialize(self):
-               self._youtube_ie.initialize()
-
-       def _real_extract(self, url):
-               # Extract username
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid url: %s' % url)
-                       return
-
-               username = mobj.group(1)
-
-               # Download video ids using YouTube Data API. Result size per
-               # query is limited (currently to 50 videos) so we need to query
-               # page by page until there are no video ids - it means we got
-               # all of them.
-
-               video_ids = []
-               pagenum = 0
-
-               while True:
-                       start_index = pagenum * self._GDATA_PAGE_SIZE + 1
-                       self.report_download_page(username, start_index)
-
-                       request = urllib2.Request(self._GDATA_URL % (username, self._GDATA_PAGE_SIZE, start_index))
-
-                       try:
-                               page = urllib2.urlopen(request).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download webpage: %s' % str(err))
-                               return
-
-                       # Extract video identifiers
-                       ids_in_page = []
-
-                       for mobj in re.finditer(self._VIDEO_INDICATOR, page):
-                               if mobj.group(1) not in ids_in_page:
-                                       ids_in_page.append(mobj.group(1))
-
-                       video_ids.extend(ids_in_page)
-
-                       # A little optimization - if current page is not
-                       # "full", ie. does not contain PAGE_SIZE video ids then
-                       # we can assume that this page is the last one - there
-                       # are no more ids on further pages - no need to query
-                       # again.
-
-                       if len(ids_in_page) < self._GDATA_PAGE_SIZE:
-                               break
-
-                       pagenum += 1
-
-               all_ids_count = len(video_ids)
-               playliststart = self._downloader.params.get('playliststart', 1) - 1
-               playlistend = self._downloader.params.get('playlistend', -1)
-
-               if playlistend == -1:
-                       video_ids = video_ids[playliststart:]
-               else:
-                       video_ids = video_ids[playliststart:playlistend]
-
-               self._downloader.to_screen(u"[youtube] user %s: Collected %d video ids (downloading %d of them)" %
-                               (username, all_ids_count, len(video_ids)))
-
-               for video_id in video_ids:
-                       self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % video_id)
-
-
-class DepositFilesIE(InfoExtractor):
-       """Information extractor for depositfiles.com"""
-
-       _VALID_URL = r'(?:http://)?(?:\w+\.)?depositfiles\.com/(?:../(?#locale))?files/(.+)'
-       IE_NAME = u'DepositFiles'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_download_webpage(self, file_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'[DepositFiles] %s: Downloading webpage' % file_id)
-
-       def report_extraction(self, file_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[DepositFiles] %s: Extracting information' % file_id)
-
-       def _real_extract(self, url):
-               # At this point we have a new file
-               self._downloader.increment_downloads()
-
-               file_id = url.split('/')[-1]
-               # Rebuild url in english locale
-               url = 'http://depositfiles.com/en/files/' + file_id
-
-               # Retrieve file webpage with 'Free download' button pressed
-               free_download_indication = { 'gateway_result' : '1' }
-               request = urllib2.Request(url, urllib.urlencode(free_download_indication))
-               try:
-                       self.report_download_webpage(file_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve file webpage: %s' % str(err))
-                       return
-
-               # Search for the real file URL
-               mobj = re.search(r'<form action="(http://fileshare.+?)"', webpage)
-               if (mobj is None) or (mobj.group(1) is None):
-                       # Try to figure out reason of the error.
-                       mobj = re.search(r'<strong>(Attention.*?)</strong>', webpage, re.DOTALL)
-                       if (mobj is not None) and (mobj.group(1) is not None):
-                               restriction_message = re.sub('\s+', ' ', mobj.group(1)).strip()
-                               self._downloader.trouble(u'ERROR: %s' % restriction_message)
-                       else:
-                               self._downloader.trouble(u'ERROR: unable to extract download URL from: %s' % url)
-                       return
-
-               file_url = mobj.group(1)
-               file_extension = os.path.splitext(file_url)[1][1:]
-
-               # Search for file title
-               mobj = re.search(r'<b title="(.*?)">', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract title')
-                       return
-               file_title = mobj.group(1).decode('utf-8')
-
-               try:
-                       # Process file information
-                       self._downloader.process_info({
-                               'id':           file_id.decode('utf-8'),
-                               'url':          file_url.decode('utf-8'),
-                               'uploader':     u'NA',
-                               'upload_date':  u'NA',
-                               'title':        file_title,
-                               'stitle':       file_title,
-                               'ext':          file_extension.decode('utf-8'),
-                               'format':       u'NA',
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'ERROR: unable to download file')
-
-
-class FacebookIE(InfoExtractor):
-       """Information Extractor for Facebook"""
-
-       _VALID_URL = r'^(?:https?://)?(?:\w+\.)?facebook\.com/(?:video/video|photo)\.php\?(?:.*?)v=(?P<ID>\d+)(?:.*)'
-       _LOGIN_URL = 'https://login.facebook.com/login.php?m&next=http%3A%2F%2Fm.facebook.com%2Fhome.php&'
-       _NETRC_MACHINE = 'facebook'
-       _available_formats = ['video', 'highqual', 'lowqual']
-       _video_extensions = {
-               'video': 'mp4',
-               'highqual': 'mp4',
-               'lowqual': 'mp4',
-       }
-       IE_NAME = u'facebook'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def _reporter(self, message):
-               """Add header and report message."""
-               self._downloader.to_screen(u'[facebook] %s' % message)
-
-       def report_login(self):
-               """Report attempt to log in."""
-               self._reporter(u'Logging in')
-
-       def report_video_webpage_download(self, video_id):
-               """Report attempt to download video webpage."""
-               self._reporter(u'%s: Downloading video webpage' % video_id)
-
-       def report_information_extraction(self, video_id):
-               """Report attempt to extract video information."""
-               self._reporter(u'%s: Extracting video information' % video_id)
-
-       def _parse_page(self, video_webpage):
-               """Extract video information from page"""
-               # General data
-               data = {'title': r'\("video_title", "(.*?)"\)',
-                       'description': r'<div class="datawrap">(.*?)</div>',
-                       'owner': r'\("video_owner_name", "(.*?)"\)',
-                       'thumbnail':  r'\("thumb_url", "(?P<THUMB>.*?)"\)',
-                       }
-               video_info = {}
-               for piece in data.keys():
-                       mobj = re.search(data[piece], video_webpage)
-                       if mobj is not None:
-                               video_info[piece] = urllib.unquote_plus(mobj.group(1).decode("unicode_escape"))
-
-               # Video urls
-               video_urls = {}
-               for fmt in self._available_formats:
-                       mobj = re.search(r'\("%s_src\", "(.+?)"\)' % fmt, video_webpage)
-                       if mobj is not None:
-                               # URL is in a Javascript segment inside an escaped Unicode format within
-                               # the generally utf-8 page
-                               video_urls[fmt] = urllib.unquote_plus(mobj.group(1).decode("unicode_escape"))
-               video_info['video_urls'] = video_urls
-
-               return video_info
-
-       def _real_initialize(self):
-               if self._downloader is None:
-                       return
-
-               useremail = None
-               password = None
-               downloader_params = self._downloader.params
-
-               # Attempt to use provided username and password or .netrc data
-               if downloader_params.get('username', None) is not None:
-                       useremail = downloader_params['username']
-                       password = downloader_params['password']
-               elif downloader_params.get('usenetrc', False):
-                       try:
-                               info = netrc.netrc().authenticators(self._NETRC_MACHINE)
-                               if info is not None:
-                                       useremail = info[0]
-                                       password = info[2]
-                               else:
-                                       raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE)
-                       except (IOError, netrc.NetrcParseError), err:
-                               self._downloader.to_stderr(u'WARNING: parsing .netrc: %s' % str(err))
-                               return
-
-               if useremail is None:
-                       return
-
-               # Log in
-               login_form = {
-                       'email': useremail,
-                       'pass': password,
-                       'login': 'Log+In'
-                       }
-               request = urllib2.Request(self._LOGIN_URL, urllib.urlencode(login_form))
-               try:
-                       self.report_login()
-                       login_results = urllib2.urlopen(request).read()
-                       if re.search(r'<form(.*)name="login"(.*)</form>', login_results) is not None:
-                               self._downloader.to_stderr(u'WARNING: unable to log in: bad username/password, or exceded login rate limit (~3/min). Check credentials or wait.')
-                               return
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.to_stderr(u'WARNING: unable to log in: %s' % str(err))
-                       return
-
-       def _real_extract(self, url):
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-               video_id = mobj.group('ID')
-
-               # Get video webpage
-               self.report_video_webpage_download(video_id)
-               request = urllib2.Request('https://www.facebook.com/video/video.php?v=%s' % video_id)
-               try:
-                       page = urllib2.urlopen(request)
-                       video_webpage = page.read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
-                       return
-
-               # Start extracting information
-               self.report_information_extraction(video_id)
-
-               # Extract information
-               video_info = self._parse_page(video_webpage)
-
-               # uploader
-               if 'owner' not in video_info:
-                       self._downloader.trouble(u'ERROR: unable to extract uploader nickname')
-                       return
-               video_uploader = video_info['owner']
-
-               # title
-               if 'title' not in video_info:
-                       self._downloader.trouble(u'ERROR: unable to extract video title')
-                       return
-               video_title = video_info['title']
-               video_title = video_title.decode('utf-8')
-               video_title = sanitize_title(video_title)
-
-               simple_title = _simplify_title(video_title)
-
-               # thumbnail image
-               if 'thumbnail' not in video_info:
-                       self._downloader.trouble(u'WARNING: unable to extract video thumbnail')
-                       video_thumbnail = ''
-               else:
-                       video_thumbnail = video_info['thumbnail']
-
-               # upload date
-               upload_date = u'NA'
-               if 'upload_date' in video_info:
-                       upload_time = video_info['upload_date']
-                       timetuple = email.utils.parsedate_tz(upload_time)
-                       if timetuple is not None:
-                               try:
-                                       upload_date = time.strftime('%Y%m%d', timetuple[0:9])
-                               except:
-                                       pass
-
-               # description
-               video_description = video_info.get('description', 'No description available.')
-
-               url_map = video_info['video_urls']
-               if len(url_map.keys()) > 0:
-                       # Decide which formats to download
-                       req_format = self._downloader.params.get('format', None)
-                       format_limit = self._downloader.params.get('format_limit', None)
-
-                       if format_limit is not None and format_limit in self._available_formats:
-                               format_list = self._available_formats[self._available_formats.index(format_limit):]
-                       else:
-                               format_list = self._available_formats
-                       existing_formats = [x for x in format_list if x in url_map]
-                       if len(existing_formats) == 0:
-                               self._downloader.trouble(u'ERROR: no known formats available for video')
-                               return
-                       if req_format is None:
-                               video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
-                       elif req_format == 'worst':
-                               video_url_list = [(existing_formats[len(existing_formats)-1], url_map[existing_formats[len(existing_formats)-1]])] # worst quality
-                       elif req_format == '-1':
-                               video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
-                       else:
-                               # Specific format
-                               if req_format not in url_map:
-                                       self._downloader.trouble(u'ERROR: requested format not available')
-                                       return
-                               video_url_list = [(req_format, url_map[req_format])] # Specific format
-
-               for format_param, video_real_url in video_url_list:
-
-                       # At this point we have a new video
-                       self._downloader.increment_downloads()
-
-                       # Extension
-                       video_extension = self._video_extensions.get(format_param, 'mp4')
-
-                       try:
-                               # Process video information
-                               self._downloader.process_info({
-                                       'id':           video_id.decode('utf-8'),
-                                       'url':          video_real_url.decode('utf-8'),
-                                       'uploader':     video_uploader.decode('utf-8'),
-                                       'upload_date':  upload_date,
-                                       'title':        video_title,
-                                       'stitle':       simple_title,
-                                       'ext':          video_extension.decode('utf-8'),
-                                       'format':       (format_param is None and u'NA' or format_param.decode('utf-8')),
-                                       'thumbnail':    video_thumbnail.decode('utf-8'),
-                                       'description':  video_description.decode('utf-8'),
-                                       'player_url':   None,
-                               })
-                       except UnavailableVideoError, err:
-                               self._downloader.trouble(u'\nERROR: unable to download video')
-
-class BlipTVIE(InfoExtractor):
-       """Information extractor for blip.tv"""
-
-       _VALID_URL = r'^(?:https?://)?(?:\w+\.)?blip\.tv(/.+)$'
-       _URL_EXT = r'^.*\.([a-z0-9]+)$'
-       IE_NAME = u'blip.tv'
-
-       def report_extraction(self, file_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, file_id))
-
-       def report_direct_download(self, title):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Direct download detected' % (self.IE_NAME, title))
-
-       def _real_extract(self, url):
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-
-               if '?' in url:
-                       cchar = '&'
-               else:
-                       cchar = '?'
-               json_url = url + cchar + 'skin=json&version=2&no_wrap=1'
-               request = urllib2.Request(json_url)
-               self.report_extraction(mobj.group(1))
-               info = None
-               try:
-                       urlh = urllib2.urlopen(request)
-                       if urlh.headers.get('Content-Type', '').startswith('video/'): # Direct download
-                               basename = url.split('/')[-1]
-                               title,ext = os.path.splitext(basename)
-                               title = title.decode('UTF-8')
-                               ext = ext.replace('.', '')
-                               self.report_direct_download(title)
-                               info = {
-                                       'id': title,
-                                       'url': url,
-                                       'title': title,
-                                       'stitle': _simplify_title(title),
-                                       'ext': ext,
-                                       'urlhandle': urlh
-                               }
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video info webpage: %s' % str(err))
-                       return
-               if info is None: # Regular URL
-                       try:
-                               json_code = urlh.read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to read video info webpage: %s' % str(err))
-                               return
-
-                       try:
-                               json_data = json.loads(json_code)
-                               if 'Post' in json_data:
-                                       data = json_data['Post']
-                               else:
-                                       data = json_data
-       
-                               upload_date = datetime.datetime.strptime(data['datestamp'], '%m-%d-%y %H:%M%p').strftime('%Y%m%d')
-                               video_url = data['media']['url']
-                               umobj = re.match(self._URL_EXT, video_url)
-                               if umobj is None:
-                                       raise ValueError('Can not determine filename extension')
-                               ext = umobj.group(1)
-       
-                               info = {
-                                       'id': data['item_id'],
-                                       'url': video_url,
-                                       'uploader': data['display_name'],
-                                       'upload_date': upload_date,
-                                       'title': data['title'],
-                                       'stitle': _simplify_title(data['title']),
-                                       'ext': ext,
-                                       'format': data['media']['mimeType'],
-                                       'thumbnail': data['thumbnailUrl'],
-                                       'description': data['description'],
-                                       'player_url': data['embedUrl']
-                               }
-                       except (ValueError,KeyError), err:
-                               self._downloader.trouble(u'ERROR: unable to parse video information: %s' % repr(err))
-                               return
-
-               self._downloader.increment_downloads()
-
-               try:
-                       self._downloader.process_info(info)
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class MyVideoIE(InfoExtractor):
-       """Information Extractor for myvideo.de."""
-
-       _VALID_URL = r'(?:http://)?(?:www\.)?myvideo\.de/watch/([0-9]+)/([^?/]+).*'
-       IE_NAME = u'myvideo'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-       
-       def report_download_webpage(self, video_id):
-               """Report webpage download."""
-               self._downloader.to_screen(u'[myvideo] %s: Downloading webpage' % video_id)
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[myvideo] %s: Extracting information' % video_id)
-
-       def _real_extract(self,url):
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._download.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-
-               video_id = mobj.group(1)
-
-               # Get video webpage
-               request = urllib2.Request('http://www.myvideo.de/watch/%s' % video_id)
-               try:
-                       self.report_download_webpage(video_id)
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve video webpage: %s' % str(err))
-                       return
-
-               self.report_extraction(video_id)
-               mobj = re.search(r'<link rel=\'image_src\' href=\'(http://is[0-9].myvideo\.de/de/movie[0-9]+/[a-f0-9]+)/thumbs/[^.]+\.jpg\' />',
-                                webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract media URL')
-                       return
-               video_url = mobj.group(1) + ('/%s.flv' % video_id)
-
-               mobj = re.search('<title>([^<]+)</title>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract title')
-                       return
-
-               video_title = mobj.group(1)
-               video_title = sanitize_title(video_title)
-
-               simple_title = _simplify_title(video_title)
-
-               try:
-                       self._downloader.process_info({
-                               'id':           video_id,
-                               'url':          video_url,
-                               'uploader':     u'NA',
-                               'upload_date':  u'NA',
-                               'title':        video_title,
-                               'stitle':       simple_title,
-                               'ext':          u'flv',
-                               'format':       u'NA',
-                               'player_url':   None,
-                       })
-               except UnavailableVideoError:
-                       self._downloader.trouble(u'\nERROR: Unable to download video')
-
-class ComedyCentralIE(InfoExtractor):
-       """Information extractor for The Daily Show and Colbert Report """
-
-       _VALID_URL = r'^(:(?P<shortname>tds|thedailyshow|cr|colbert|colbertnation|colbertreport))|(https?://)?(www\.)?(?P<showname>thedailyshow|colbertnation)\.com/full-episodes/(?P<episode>.*)$'
-       IE_NAME = u'comedycentral'
-
-       def report_extraction(self, episode_id):
-               self._downloader.to_screen(u'[comedycentral] %s: Extracting information' % episode_id)
-       
-       def report_config_download(self, episode_id):
-               self._downloader.to_screen(u'[comedycentral] %s: Downloading configuration' % episode_id)
-
-       def report_index_download(self, episode_id):
-               self._downloader.to_screen(u'[comedycentral] %s: Downloading show index' % episode_id)
-
-       def report_player_url(self, episode_id):
-               self._downloader.to_screen(u'[comedycentral] %s: Determining player URL' % episode_id)
-
-       def _real_extract(self, url):
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-
-               if mobj.group('shortname'):
-                       if mobj.group('shortname') in ('tds', 'thedailyshow'):
-                               url = u'http://www.thedailyshow.com/full-episodes/'
-                       else:
-                               url = u'http://www.colbertnation.com/full-episodes/'
-                       mobj = re.match(self._VALID_URL, url)
-                       assert mobj is not None
-
-               dlNewest = not mobj.group('episode')
-               if dlNewest:
-                       epTitle = mobj.group('showname')
-               else:
-                       epTitle = mobj.group('episode')
-
-               req = urllib2.Request(url)
-               self.report_extraction(epTitle)
-               try:
-                       htmlHandle = urllib2.urlopen(req)
-                       html = htmlHandle.read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download webpage: %s' % unicode(err))
-                       return
-               if dlNewest:
-                       url = htmlHandle.geturl()
-                       mobj = re.match(self._VALID_URL, url)
-                       if mobj is None:
-                               self._downloader.trouble(u'ERROR: Invalid redirected URL: ' + url)
-                               return
-                       if mobj.group('episode') == '':
-                               self._downloader.trouble(u'ERROR: Redirected URL is still not specific: ' + url)
-                               return
-                       epTitle = mobj.group('episode')
-
-               mMovieParams = re.findall('(?:<param name="movie" value="|var url = ")(http://media.mtvnservices.com/([^"]*episode.*?:.*?))"', html)
-               if len(mMovieParams) == 0:
-                       self._downloader.trouble(u'ERROR: unable to find Flash URL in webpage ' + url)
-                       return
-
-               playerUrl_raw = mMovieParams[0][0]
-               self.report_player_url(epTitle)
-               try:
-                       urlHandle = urllib2.urlopen(playerUrl_raw)
-                       playerUrl = urlHandle.geturl()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to find out player URL: ' + unicode(err))
-                       return
-
-               uri = mMovieParams[0][1]
-               indexUrl = 'http://shadow.comedycentral.com/feeds/video_player/mrss/?' + urllib.urlencode({'uri': uri})
-               self.report_index_download(epTitle)
-               try:
-                       indexXml = urllib2.urlopen(indexUrl).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download episode index: ' + unicode(err))
-                       return
-
-               idoc = xml.etree.ElementTree.fromstring(indexXml)
-               itemEls = idoc.findall('.//item')
-               for itemEl in itemEls:
-                       mediaId = itemEl.findall('./guid')[0].text
-                       shortMediaId = mediaId.split(':')[-1]
-                       showId = mediaId.split(':')[-2].replace('.com', '')
-                       officialTitle = itemEl.findall('./title')[0].text
-                       officialDate = itemEl.findall('./pubDate')[0].text
-
-                       configUrl = ('http://www.comedycentral.com/global/feeds/entertainment/media/mediaGenEntertainment.jhtml?' +
-                                               urllib.urlencode({'uri': mediaId}))
-                       configReq = urllib2.Request(configUrl)
-                       self.report_config_download(epTitle)
-                       try:
-                               configXml = urllib2.urlopen(configReq).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download webpage: %s' % unicode(err))
-                               return
-
-                       cdoc = xml.etree.ElementTree.fromstring(configXml)
-                       turls = []
-                       for rendition in cdoc.findall('.//rendition'):
-                               finfo = (rendition.attrib['bitrate'], rendition.findall('./src')[0].text)
-                               turls.append(finfo)
-
-                       if len(turls) == 0:
-                               self._downloader.trouble(u'\nERROR: unable to download ' + mediaId + ': No videos found')
-                               continue
-
-                       # For now, just pick the highest bitrate
-                       format,video_url = turls[-1]
-
-                       self._downloader.increment_downloads()
-
-                       effTitle = showId + u'-' + epTitle
-                       info = {
-                               'id': shortMediaId,
-                               'url': video_url,
-                               'uploader': showId,
-                               'upload_date': officialDate,
-                               'title': effTitle,
-                               'stitle': _simplify_title(effTitle),
-                               'ext': 'mp4',
-                               'format': format,
-                               'thumbnail': None,
-                               'description': officialTitle,
-                               'player_url': playerUrl
-                       }
-
-                       try:
-                               self._downloader.process_info(info)
-                       except UnavailableVideoError, err:
-                               self._downloader.trouble(u'\nERROR: unable to download ' + mediaId)
-                               continue
-
-
-class EscapistIE(InfoExtractor):
-       """Information extractor for The Escapist """
-
-       _VALID_URL = r'^(https?://)?(www\.)?escapistmagazine\.com/videos/view/(?P<showname>[^/]+)/(?P<episode>[^/?]+)[/?]?.*$'
-       IE_NAME = u'escapist'
-
-       def report_extraction(self, showName):
-               self._downloader.to_screen(u'[escapist] %s: Extracting information' % showName)
-
-       def report_config_download(self, showName):
-               self._downloader.to_screen(u'[escapist] %s: Downloading configuration' % showName)
-
-       def _real_extract(self, url):
-               htmlParser = HTMLParser.HTMLParser()
-
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-               showName = mobj.group('showname')
-               videoId = mobj.group('episode')
-
-               self.report_extraction(showName)
-               try:
-                       webPage = urllib2.urlopen(url).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download webpage: ' + unicode(err))
-                       return
-
-               descMatch = re.search('<meta name="description" content="([^"]*)"', webPage)
-               description = htmlParser.unescape(descMatch.group(1))
-               imgMatch = re.search('<meta property="og:image" content="([^"]*)"', webPage)
-               imgUrl = htmlParser.unescape(imgMatch.group(1))
-               playerUrlMatch = re.search('<meta property="og:video" content="([^"]*)"', webPage)
-               playerUrl = htmlParser.unescape(playerUrlMatch.group(1))
-               configUrlMatch = re.search('config=(.*)$', playerUrl)
-               configUrl = urllib2.unquote(configUrlMatch.group(1))
-
-               self.report_config_download(showName)
-               try:
-                       configJSON = urllib2.urlopen(configUrl).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download configuration: ' + unicode(err))
-                       return
-
-               # Technically, it's JavaScript, not JSON
-               configJSON = configJSON.replace("'", '"')
-
-               try:
-                       config = json.loads(configJSON)
-               except (ValueError,), err:
-                       self._downloader.trouble(u'ERROR: Invalid JSON in configuration file: ' + unicode(err))
-                       return
-
-               playlist = config['playlist']
-               videoUrl = playlist[1]['url']
-
-               self._downloader.increment_downloads()
-               info = {
-                       'id': videoId,
-                       'url': videoUrl,
-                       'uploader': showName,
-                       'upload_date': None,
-                       'title': showName,
-                       'stitle': _simplify_title(showName),
-                       'ext': 'flv',
-                       'format': 'flv',
-                       'thumbnail': imgUrl,
-                       'description': description,
-                       'player_url': playerUrl,
-               }
-
-               try:
-                       self._downloader.process_info(info)
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'\nERROR: unable to download ' + videoId)
-
-
-class CollegeHumorIE(InfoExtractor):
-       """Information extractor for collegehumor.com"""
-
-       _VALID_URL = r'^(?:https?://)?(?:www\.)?collegehumor\.com/video/(?P<videoid>[0-9]+)/(?P<shorttitle>.*)$'
-       IE_NAME = u'collegehumor'
-
-       def report_webpage(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
-
-       def _real_extract(self, url):
-               htmlParser = HTMLParser.HTMLParser()
-
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-               video_id = mobj.group('videoid')
-
-               self.report_webpage(video_id)
-               request = urllib2.Request(url)
-               try:
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
-                       return
-
-               m = re.search(r'id="video:(?P<internalvideoid>[0-9]+)"', webpage)
-               if m is None:
-                       self._downloader.trouble(u'ERROR: Cannot extract internal video ID')
-                       return
-               internal_video_id = m.group('internalvideoid')
-
-               info = {
-                       'id': video_id,
-                       'internal_id': internal_video_id,
-               }
-
-               self.report_extraction(video_id)
-               xmlUrl = 'http://www.collegehumor.com/moogaloop/video:' + internal_video_id
-               try:
-                       metaXml = urllib2.urlopen(xmlUrl).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video info XML: %s' % str(err))
-                       return
-
-               mdoc = xml.etree.ElementTree.fromstring(metaXml)
-               try:
-                       videoNode = mdoc.findall('./video')[0]
-                       info['description'] = videoNode.findall('./description')[0].text
-                       info['title'] = videoNode.findall('./caption')[0].text
-                       info['stitle'] = _simplify_title(info['title'])
-                       info['url'] = videoNode.findall('./file')[0].text
-                       info['thumbnail'] = videoNode.findall('./thumbnail')[0].text
-                       info['ext'] = info['url'].rpartition('.')[2]
-                       info['format'] = info['ext']
-               except IndexError:
-                       self._downloader.trouble(u'\nERROR: Invalid metadata XML file')
-                       return
-
-               self._downloader.increment_downloads()
-
-               try:
-                       self._downloader.process_info(info)
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class XVideosIE(InfoExtractor):
-       """Information extractor for xvideos.com"""
-
-       _VALID_URL = r'^(?:https?://)?(?:www\.)?xvideos\.com/video([0-9]+)(?:.*)'
-       IE_NAME = u'xvideos'
-
-       def report_webpage(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
-
-       def _real_extract(self, url):
-               htmlParser = HTMLParser.HTMLParser()
-
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-               video_id = mobj.group(1).decode('utf-8')
-
-               self.report_webpage(video_id)
-
-               request = urllib2.Request(r'http://www.xvideos.com/video' + video_id)
-               try:
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
-                       return
-
-               self.report_extraction(video_id)
-
-
-               # Extract video URL
-               mobj = re.search(r'flv_url=(.+?)&', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video url')
-                       return
-               video_url = urllib2.unquote(mobj.group(1).decode('utf-8'))
-
-
-               # Extract title
-               mobj = re.search(r'<title>(.*?)\s+-\s+XVID', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-
-
-               # Extract video thumbnail
-               mobj = re.search(r'http://(?:img.*?\.)xvideos.com/videos/thumbs/[a-fA-F0-9]/[a-fA-F0-9]/[a-fA-F0-9]/([a-fA-F0-9.]+jpg)', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video thumbnail')
-                       return
-               video_thumbnail = mobj.group(1).decode('utf-8')
-
-
-
-               self._downloader.increment_downloads()
-               info = {
-                       'id': video_id,
-                       'url': video_url,
-                       'uploader': None,
-                       'upload_date': None,
-                       'title': video_title,
-                       'stitle': _simplify_title(video_title),
-                       'ext': 'flv',
-                       'format': 'flv',
-                       'thumbnail': video_thumbnail,
-                       'description': None,
-                       'player_url': None,
-               }
-
-               try:
-                       self._downloader.process_info(info)
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'\nERROR: unable to download ' + video_id)
-
-
-class SoundcloudIE(InfoExtractor):
-       """Information extractor for soundcloud.com
-          To access the media, the uid of the song and a stream token
-          must be extracted from the page source and the script must make
-          a request to media.soundcloud.com/crossdomain.xml. Then
-          the media can be grabbed by requesting from an url composed
-          of the stream token and uid
-        """
-
-       _VALID_URL = r'^(?:https?://)?(?:www\.)?soundcloud\.com/([\w\d-]+)/([\w\d-]+)'
-       IE_NAME = u'soundcloud'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_webpage(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
-
-       def _real_extract(self, url):
-               htmlParser = HTMLParser.HTMLParser()
-
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-
-               # extract uploader (which is in the url)
-               uploader = mobj.group(1).decode('utf-8')
-               # extract simple title (uploader + slug of song title)
-               slug_title =  mobj.group(2).decode('utf-8')
-               simple_title = uploader + '-' + slug_title
-
-               self.report_webpage('%s/%s' % (uploader, slug_title))
-
-               request = urllib2.Request('http://soundcloud.com/%s/%s' % (uploader, slug_title))
-               try:
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
-                       return
-
-               self.report_extraction('%s/%s' % (uploader, slug_title))
-
-               # extract uid and stream token that soundcloud hands out for access
-               mobj = re.search('"uid":"([\w\d]+?)".*?stream_token=([\w\d]+)', webpage)
-               if mobj:
-                       video_id = mobj.group(1)
-                       stream_token = mobj.group(2)
-
-               # extract unsimplified title
-               mobj = re.search('"title":"(.*?)",', webpage)
-               if mobj:
-                       title = mobj.group(1)
-
-               # construct media url (with uid/token)
-               mediaURL = "http://media.soundcloud.com/stream/%s?stream_token=%s"
-               mediaURL = mediaURL % (video_id, stream_token)
-
-               # description
-               description = u'No description available'
-               mobj = re.search('track-description-value"><p>(.*?)</p>', webpage)
-               if mobj:
-                       description = mobj.group(1)
-               
-               # upload date
-               upload_date = None
-               mobj = re.search("pretty-date'>on ([\w]+ [\d]+, [\d]+ \d+:\d+)</abbr></h2>", webpage)
-               if mobj:
-                       try:
-                               upload_date = datetime.datetime.strptime(mobj.group(1), '%B %d, %Y %H:%M').strftime('%Y%m%d')
-                       except Exception, e:
-                               print str(e)
-
-               # for soundcloud, a request to a cross domain is required for cookies
-               request = urllib2.Request('http://media.soundcloud.com/crossdomain.xml', std_headers)
-
-               try:
-                       self._downloader.process_info({
-                               'id':           video_id.decode('utf-8'),
-                               'url':          mediaURL,
-                               'uploader':     uploader.decode('utf-8'),
-                               'upload_date':  upload_date,
-                               'title':        simple_title.decode('utf-8'),
-                               'stitle':       simple_title.decode('utf-8'),
-                               'ext':          u'mp3',
-                               'format':       u'NA',
-                               'player_url':   None,
-                               'description': description.decode('utf-8')
-                       })
-               except UnavailableVideoError:
-                       self._downloader.trouble(u'\nERROR: unable to download video')
-
-
-class InfoQIE(InfoExtractor):
-       """Information extractor for infoq.com"""
-
-       _VALID_URL = r'^(?:https?://)?(?:www\.)?infoq\.com/[^/]+/[^/]+$'
-       IE_NAME = u'infoq'
-
-       def report_webpage(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
-
-       def _real_extract(self, url):
-               htmlParser = HTMLParser.HTMLParser()
-
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-
-               self.report_webpage(url)
-
-               request = urllib2.Request(url)
-               try:
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
-                       return
-
-               self.report_extraction(url)
-
-
-               # Extract video URL
-               mobj = re.search(r"jsclassref='([^']*)'", webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video url')
-                       return
-               video_url = 'rtmpe://video.infoq.com/cfx/st/' + urllib2.unquote(mobj.group(1).decode('base64'))
-
-
-               # Extract title
-               mobj = re.search(r'contentTitle = "(.*?)";', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract video title')
-                       return
-               video_title = mobj.group(1).decode('utf-8')
-
-               # Extract description
-               video_description = u'No description available.'
-               mobj = re.search(r'<meta name="description" content="(.*)"(?:\s*/)?>', webpage)
-               if mobj is not None:
-                       video_description = mobj.group(1).decode('utf-8')
-
-               video_filename = video_url.split('/')[-1]
-               video_id, extension = video_filename.split('.')
-
-               self._downloader.increment_downloads()
-               info = {
-                       'id': video_id,
-                       'url': video_url,
-                       'uploader': None,
-                       'upload_date': None,
-                       'title': video_title,
-                       'stitle': _simplify_title(video_title),
-                       'ext': extension,
-                       'format': extension, # Extension is always(?) mp4, but seems to be flv
-                       'thumbnail': None,
-                       'description': video_description,
-                       'player_url': None,
-               }
-
-               try:
-                       self._downloader.process_info(info)
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'\nERROR: unable to download ' + video_url)
-
-class MixcloudIE(InfoExtractor):
-       """Information extractor for www.mixcloud.com"""
-       _VALID_URL = r'^(?:https?://)?(?:www\.)?mixcloud\.com/([\w\d-]+)/([\w\d-]+)'
-       IE_NAME = u'mixcloud'
-
-       def __init__(self, downloader=None):
-               InfoExtractor.__init__(self, downloader)
-
-       def report_download_json(self, file_id):
-               """Report JSON download."""
-               self._downloader.to_screen(u'[%s] Downloading json' % self.IE_NAME)
-
-       def report_extraction(self, file_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, file_id))
-
-       def get_urls(self, jsonData, fmt, bitrate='best'):
-               """Get urls from 'audio_formats' section in json"""
-               file_url = None
-               try:
-                       bitrate_list = jsonData[fmt]
-                       if bitrate is None or bitrate == 'best' or bitrate not in bitrate_list:
-                               bitrate = max(bitrate_list) # select highest
-
-                       url_list = jsonData[fmt][bitrate]
-               except TypeError: # we have no bitrate info.
-                       url_list = jsonData[fmt]
-                               
-               return url_list
-
-       def check_urls(self, url_list):
-               """Returns 1st active url from list"""
-               for url in url_list:
-                       try:
-                               urllib2.urlopen(url)
-                               return url
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               url = None
-
-               return None
-
-       def _print_formats(self, formats):
-               print 'Available formats:'
-               for fmt in formats.keys():
-                       for b in formats[fmt]:
-                               try:
-                                       ext = formats[fmt][b][0]
-                                       print '%s\t%s\t[%s]' % (fmt, b, ext.split('.')[-1])
-                               except TypeError: # we have no bitrate info
-                                       ext = formats[fmt][0]
-                                       print '%s\t%s\t[%s]' % (fmt, '??', ext.split('.')[-1])
-                                       break
-
-       def _real_extract(self, url):
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-               # extract uploader & filename from url
-               uploader = mobj.group(1).decode('utf-8')
-               file_id = uploader + "-" + mobj.group(2).decode('utf-8')
-
-               # construct API request
-               file_url = 'http://www.mixcloud.com/api/1/cloudcast/' + '/'.join(url.split('/')[-3:-1]) + '.json'
-               # retrieve .json file with links to files
-               request = urllib2.Request(file_url)
-               try:
-                       self.report_download_json(file_url)
-                       jsonData = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: Unable to retrieve file: %s' % str(err))
-                       return
-
-               # parse JSON
-               json_data = json.loads(jsonData)
-               player_url = json_data['player_swf_url']
-               formats = dict(json_data['audio_formats'])
-
-               req_format = self._downloader.params.get('format', None)
-               bitrate = None
-
-               if self._downloader.params.get('listformats', None):
-                       self._print_formats(formats)
-                       return
-
-               if req_format is None or req_format == 'best':
-                       for format_param in formats.keys():
-                               url_list = self.get_urls(formats, format_param)
-                               # check urls
-                               file_url = self.check_urls(url_list)
-                               if file_url is not None:
-                                       break # got it!
-               else:
-                       if req_format not in formats.keys():
-                               self._downloader.trouble(u'ERROR: format is not available')
-                               return
-
-                       url_list = self.get_urls(formats, req_format)
-                       file_url = self.check_urls(url_list)
-                       format_param = req_format
-
-               # We have audio
-               self._downloader.increment_downloads()
-               try:
-                       # Process file information
-                       self._downloader.process_info({
-                               'id': file_id.decode('utf-8'),
-                               'url': file_url.decode('utf-8'),
-                               'uploader':     uploader.decode('utf-8'),
-                               'upload_date': u'NA',
-                               'title': json_data['name'],
-                               'stitle': _simplify_title(json_data['name']),
-                               'ext': file_url.split('.')[-1].decode('utf-8'),
-                               'format': (format_param is None and u'NA' or format_param.decode('utf-8')),
-                               'thumbnail': json_data['thumbnail_url'],
-                               'description': json_data['description'],
-                               'player_url': player_url.decode('utf-8'),
-                       })
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'ERROR: unable to download file')
-
-class StanfordOpenClassroomIE(InfoExtractor):
-       """Information extractor for Stanford's Open ClassRoom"""
-
-       _VALID_URL = r'^(?:https?://)?openclassroom.stanford.edu(?P<path>/?|(/MainFolder/(?:HomePage|CoursePage|VideoPage)\.php([?]course=(?P<course>[^&]+)(&video=(?P<video>[^&]+))?(&.*)?)?))$'
-       IE_NAME = u'stanfordoc'
-
-       def report_download_webpage(self, objid):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, objid))
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
-
-       def _real_extract(self, url):
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-
-               if mobj.group('course') and mobj.group('video'): # A specific video
-                       course = mobj.group('course')
-                       video = mobj.group('video')
-                       info = {
-                               'id': _simplify_title(course + '_' + video),
-                       }
-       
-                       self.report_extraction(info['id'])
-                       baseUrl = 'http://openclassroom.stanford.edu/MainFolder/courses/' + course + '/videos/'
-                       xmlUrl = baseUrl + video + '.xml'
-                       try:
-                               metaXml = urllib2.urlopen(xmlUrl).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download video info XML: %s' % unicode(err))
-                               return
-                       mdoc = xml.etree.ElementTree.fromstring(metaXml)
-                       try:
-                               info['title'] = mdoc.findall('./title')[0].text
-                               info['url'] = baseUrl + mdoc.findall('./videoFile')[0].text
-                       except IndexError:
-                               self._downloader.trouble(u'\nERROR: Invalid metadata XML file')
-                               return
-                       info['stitle'] = _simplify_title(info['title'])
-                       info['ext'] = info['url'].rpartition('.')[2]
-                       info['format'] = info['ext']
-                       self._downloader.increment_downloads()
-                       try:
-                               self._downloader.process_info(info)
-                       except UnavailableVideoError, err:
-                               self._downloader.trouble(u'\nERROR: unable to download video')
-               elif mobj.group('course'): # A course page
-                       unescapeHTML = HTMLParser.HTMLParser().unescape
-
-                       course = mobj.group('course')
-                       info = {
-                               'id': _simplify_title(course),
-                               'type': 'playlist',
-                       }
-
-                       self.report_download_webpage(info['id'])
-                       try:
-                               coursepage = urllib2.urlopen(url).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download course info page: ' + unicode(err))
-                               return
-
-                       m = re.search('<h1>([^<]+)</h1>', coursepage)
-                       if m:
-                               info['title'] = unescapeHTML(m.group(1))
-                       else:
-                               info['title'] = info['id']
-                       info['stitle'] = _simplify_title(info['title'])
-
-                       m = re.search('<description>([^<]+)</description>', coursepage)
-                       if m:
-                               info['description'] = unescapeHTML(m.group(1))
-
-                       links = _orderedSet(re.findall('<a href="(VideoPage.php\?[^"]+)">', coursepage))
-                       info['list'] = [
-                               {
-                                       'type': 'reference',
-                                       'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(vpage),
-                               }
-                                       for vpage in links]
-
-                       for entry in info['list']:
-                               assert entry['type'] == 'reference'
-                               self.extract(entry['url'])
-               else: # Root page
-                       unescapeHTML = HTMLParser.HTMLParser().unescape
-
-                       info = {
-                               'id': 'Stanford OpenClassroom',
-                               'type': 'playlist',
-                       }
-
-                       self.report_download_webpage(info['id'])
-                       rootURL = 'http://openclassroom.stanford.edu/MainFolder/HomePage.php'
-                       try:
-                               rootpage = urllib2.urlopen(rootURL).read()
-                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                               self._downloader.trouble(u'ERROR: unable to download course info page: ' + unicode(err))
-                               return
-
-                       info['title'] = info['id']
-                       info['stitle'] = _simplify_title(info['title'])
-
-                       links = _orderedSet(re.findall('<a href="(CoursePage.php\?[^"]+)">', rootpage))
-                       info['list'] = [
-                               {
-                                       'type': 'reference',
-                                       'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(cpage),
-                               }
-                                       for cpage in links]
-
-                       for entry in info['list']:
-                               assert entry['type'] == 'reference'
-                               self.extract(entry['url'])
-
-class MTVIE(InfoExtractor):
-       """Information extractor for MTV.com"""
-
-       _VALID_URL = r'^(?P<proto>https?://)?(?:www\.)?mtv\.com/videos/[^/]+/(?P<videoid>[0-9]+)/[^/]+$'
-       IE_NAME = u'mtv'
-
-       def report_webpage(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
-
-       def report_extraction(self, video_id):
-               """Report information extraction."""
-               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
-
-       def _real_extract(self, url):
-               mobj = re.match(self._VALID_URL, url)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
-                       return
-               if not mobj.group('proto'):
-                       url = 'http://' + url
-               video_id = mobj.group('videoid')
-               self.report_webpage(video_id)
-
-               request = urllib2.Request(url)
-               try:
-                       webpage = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
-                       return
-
-               mobj = re.search(r'<meta name="mtv_vt" content="([^"]+)"/>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract song name')
-                       return
-               song_name = _unescapeHTML(mobj.group(1).decode('iso-8859-1'))
-               mobj = re.search(r'<meta name="mtv_an" content="([^"]+)"/>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract performer')
-                       return
-               performer = _unescapeHTML(mobj.group(1).decode('iso-8859-1'))
-               video_title = performer + ' - ' + song_name 
-
-               mobj = re.search(r'<meta name="mtvn_uri" content="([^"]+)"/>', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to mtvn_uri')
-                       return
-               mtvn_uri = mobj.group(1)
-
-               mobj = re.search(r'MTVN.Player.defaultPlaylistId = ([0-9]+);', webpage)
-               if mobj is None:
-                       self._downloader.trouble(u'ERROR: unable to extract content id')
-                       return
-               content_id = mobj.group(1)
-
-               videogen_url = 'http://www.mtv.com/player/includes/mediaGen.jhtml?uri=' + mtvn_uri + '&id=' + content_id + '&vid=' + video_id + '&ref=www.mtvn.com&viewUri=' + mtvn_uri
-               self.report_extraction(video_id)
-               request = urllib2.Request(videogen_url)
-               try:
-                       metadataXml = urllib2.urlopen(request).read()
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self._downloader.trouble(u'ERROR: unable to download video metadata: %s' % str(err))
-                       return
-
-               mdoc = xml.etree.ElementTree.fromstring(metadataXml)
-               renditions = mdoc.findall('.//rendition')
-
-               # For now, always pick the highest quality.
-               rendition = renditions[-1]
-
-               try:
-                       _,_,ext = rendition.attrib['type'].partition('/')
-                       format = ext + '-' + rendition.attrib['width'] + 'x' + rendition.attrib['height'] + '_' + rendition.attrib['bitrate']
-                       video_url = rendition.find('./src').text
-               except KeyError:
-                       self._downloader.trouble('Invalid rendition field.')
-                       return
-
-               self._downloader.increment_downloads()
-               info = {
-                       'id': video_id,
-                       'url': video_url,
-                       'uploader': performer,
-                       'title': video_title,
-                       'stitle': _simplify_title(video_title),
-                       'ext': ext,
-                       'format': format,
-               }
-
-               try:
-                       self._downloader.process_info(info)
-               except UnavailableVideoError, err:
-                       self._downloader.trouble(u'\nERROR: unable to download ' + video_id)
-
-
-class PostProcessor(object):
-       """Post Processor class.
-
-       PostProcessor objects can be added to downloaders with their
-       add_post_processor() method. When the downloader has finished a
-       successful download, it will take its internal chain of PostProcessors
-       and start calling the run() method on each one of them, first with
-       an initial argument and then with the returned value of the previous
-       PostProcessor.
-
-       The chain will be stopped if one of them ever returns None or the end
-       of the chain is reached.
-
-       PostProcessor objects follow a "mutual registration" process similar
-       to InfoExtractor objects.
-       """
-
-       _downloader = None
-
-       def __init__(self, downloader=None):
-               self._downloader = downloader
-
-       def set_downloader(self, downloader):
-               """Sets the downloader for this PP."""
-               self._downloader = downloader
-
-       def run(self, information):
-               """Run the PostProcessor.
-
-               The "information" argument is a dictionary like the ones
-               composed by InfoExtractors. The only difference is that this
-               one has an extra field called "filepath" that points to the
-               downloaded file.
-
-               When this method returns None, the postprocessing chain is
-               stopped. However, this method may return an information
-               dictionary that will be passed to the next postprocessing
-               object in the chain. It can be the one it received after
-               changing some fields.
-
-               In addition, this method may raise a PostProcessingError
-               exception that will be taken into account by the downloader
-               it was called from.
-               """
-               return information # by default, do nothing
-
-class AudioConversionError(BaseException):
-       def __init__(self, message):
-               self.message = message
-
-class FFmpegExtractAudioPP(PostProcessor):
-
-       def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, keepvideo=False):
-               PostProcessor.__init__(self, downloader)
-               if preferredcodec is None:
-                       preferredcodec = 'best'
-               self._preferredcodec = preferredcodec
-               self._preferredquality = preferredquality
-               self._keepvideo = keepvideo
-
-       @staticmethod
-       def get_audio_codec(path):
-               try:
-                       cmd = ['ffprobe', '-show_streams', '--', _encodeFilename(path)]
-                       handle = subprocess.Popen(cmd, stderr=file(os.path.devnull, 'w'), stdout=subprocess.PIPE)
-                       output = handle.communicate()[0]
-                       if handle.wait() != 0:
-                               return None
-               except (IOError, OSError):
-                       return None
-               audio_codec = None
-               for line in output.split('\n'):
-                       if line.startswith('codec_name='):
-                               audio_codec = line.split('=')[1].strip()
-                       elif line.strip() == 'codec_type=audio' and audio_codec is not None:
-                               return audio_codec
-               return None
-
-       @staticmethod
-       def run_ffmpeg(path, out_path, codec, more_opts):
-               if codec is None:
-                       acodec_opts = []
-               else:
-                       acodec_opts = ['-acodec', codec]
-               cmd = ['ffmpeg', '-y', '-i', _encodeFilename(path), '-vn'] + acodec_opts + more_opts + ['--', _encodeFilename(out_path)]
-               try:
-                       p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-                       stdout,stderr = p.communicate()
-               except (IOError, OSError):
-                       e = sys.exc_info()[1]
-                       if isinstance(e, OSError) and e.errno == 2:
-                               raise AudioConversionError('ffmpeg not found. Please install ffmpeg.')
-                       else:
-                               raise e
-               if p.returncode != 0:
-                       msg = stderr.strip().split('\n')[-1]
-                       raise AudioConversionError(msg)
-
-       def run(self, information):
-               path = information['filepath']
-
-               filecodec = self.get_audio_codec(path)
-               if filecodec is None:
-                       self._downloader.to_stderr(u'WARNING: unable to obtain file audio codec with ffprobe')
-                       return None
-
-               more_opts = []
-               if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
-                       if self._preferredcodec == 'm4a' and filecodec == 'aac':
-                               # Lossless, but in another container
-                               acodec = 'copy'
-                               extension = self._preferredcodec
-                               more_opts = ['-absf', 'aac_adtstoasc']
-                       elif filecodec in ['aac', 'mp3', 'vorbis']:
-                               # Lossless if possible
-                               acodec = 'copy'
-                               extension = filecodec
-                               if filecodec == 'aac':
-                                       more_opts = ['-f', 'adts']
-                               if filecodec == 'vorbis':
-                                       extension = 'ogg'
-                       else:
-                               # MP3 otherwise.
-                               acodec = 'libmp3lame'
-                               extension = 'mp3'
-                               more_opts = []
-                               if self._preferredquality is not None:
-                                       more_opts += ['-ab', self._preferredquality]
-               else:
-                       # We convert the audio (lossy)
-                       acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
-                       extension = self._preferredcodec
-                       more_opts = []
-                       if self._preferredquality is not None:
-                               more_opts += ['-ab', self._preferredquality]
-                       if self._preferredcodec == 'aac':
-                               more_opts += ['-f', 'adts']
-                       if self._preferredcodec == 'm4a':
-                               more_opts += ['-absf', 'aac_adtstoasc']
-                       if self._preferredcodec == 'vorbis':
-                               extension = 'ogg'
-                       if self._preferredcodec == 'wav':
-                               extension = 'wav'
-                               more_opts += ['-f', 'wav']
-
-               prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups
-               new_path = prefix + sep + extension
-               self._downloader.to_screen(u'[ffmpeg] Destination: ' + new_path)
-               try:
-                       self.run_ffmpeg(path, new_path, acodec, more_opts)
-               except:
-                       etype,e,tb = sys.exc_info()
-                       if isinstance(e, AudioConversionError):
-                               self._downloader.to_stderr(u'ERROR: audio conversion failed: ' + e.message)
-                       else:
-                               self._downloader.to_stderr(u'ERROR: error running ffmpeg')
-                       return None
-
-               # Try to update the date time for extracted audio file.
-               if information.get('filetime') is not None:
-                       try:
-                               os.utime(_encodeFilename(new_path), (time.time(), information['filetime']))
-                       except:
-                               self._downloader.to_stderr(u'WARNING: Cannot update utime of audio file')
-
-               if not self._keepvideo:
-                       try:
-                               os.remove(_encodeFilename(path))
-                       except (IOError, OSError):
-                               self._downloader.to_stderr(u'WARNING: Unable to remove downloaded video file')
-                               return None
-
-               information['filepath'] = new_path
-               return information
-
-
-def updateSelf(downloader, filename):
-       ''' Update the program file with the latest version from the repository '''
-       # Note: downloader only used for options
-       if not os.access(filename, os.W_OK):
-               sys.exit('ERROR: no write permissions on %s' % filename)
-
-       downloader.to_screen(u'Updating to latest version...')
-
-       try:
-               try:
-                       urlh = urllib.urlopen(UPDATE_URL)
-                       newcontent = urlh.read()
-                       
-                       vmatch = re.search("__version__ = '([^']+)'", newcontent)
-                       if vmatch is not None and vmatch.group(1) == __version__:
-                               downloader.to_screen(u'youtube-dl is up-to-date (' + __version__ + ')')
-                               return
-               finally:
-                       urlh.close()
-       except (IOError, OSError), err:
-               sys.exit('ERROR: unable to download latest version')
-
-       try:
-               outf = open(filename, 'wb')
-               try:
-                       outf.write(newcontent)
-               finally:
-                       outf.close()
-       except (IOError, OSError), err:
-               sys.exit('ERROR: unable to overwrite current version')
-
-       downloader.to_screen(u'Updated youtube-dl. Restart youtube-dl to use the new version.')
-
-def parseOpts():
-       def _readOptions(filename_bytes):
-               try:
-                       optionf = open(filename_bytes)
-               except IOError:
-                       return [] # silently skip if file is not present
-               try:
-                       res = []
-                       for l in optionf:
-                               res += shlex.split(l, comments=True)
-               finally:
-                       optionf.close()
-               return res
-
-       def _format_option_string(option):
-               ''' ('-o', '--option') -> -o, --format METAVAR'''
-
-               opts = []
-
-               if option._short_opts: opts.append(option._short_opts[0])
-               if option._long_opts: opts.append(option._long_opts[0])
-               if len(opts) > 1: opts.insert(1, ', ')
-
-               if option.takes_value(): opts.append(' %s' % option.metavar)
-
-               return "".join(opts)
-
-       def _find_term_columns():
-               columns = os.environ.get('COLUMNS', None)
-               if columns:
-                       return int(columns)
-
-               try:
-                       sp = subprocess.Popen(['stty', 'size'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-                       out,err = sp.communicate()
-                       return int(out.split()[1])
-               except:
-                       pass
-               return None
-
-       max_width = 80
-       max_help_position = 80
-
-       # No need to wrap help messages if we're on a wide console
-       columns = _find_term_columns()
-       if columns: max_width = columns
-
-       fmt = optparse.IndentedHelpFormatter(width=max_width, max_help_position=max_help_position)
-       fmt.format_option_strings = _format_option_string
-
-       kw = {
-               'version'   : __version__,
-               'formatter' : fmt,
-               'usage' : '%prog [options] url [url...]',
-               'conflict_handler' : 'resolve',
-       }
-
-       parser = optparse.OptionParser(**kw)
-
-       # option groups
-       general        = optparse.OptionGroup(parser, 'General Options')
-       selection      = optparse.OptionGroup(parser, 'Video Selection')
-       authentication = optparse.OptionGroup(parser, 'Authentication Options')
-       video_format   = optparse.OptionGroup(parser, 'Video Format Options')
-       postproc       = optparse.OptionGroup(parser, 'Post-processing Options')
-       filesystem     = optparse.OptionGroup(parser, 'Filesystem Options')
-       verbosity      = optparse.OptionGroup(parser, 'Verbosity / Simulation Options')
-
-       general.add_option('-h', '--help',
-                       action='help', help='print this help text and exit')
-       general.add_option('-v', '--version',
-                       action='version', help='print program version and exit')
-       general.add_option('-U', '--update',
-                       action='store_true', dest='update_self', help='update this program to latest version')
-       general.add_option('-i', '--ignore-errors',
-                       action='store_true', dest='ignoreerrors', help='continue on download errors', default=False)
-       general.add_option('-r', '--rate-limit',
-                       dest='ratelimit', metavar='LIMIT', help='download rate limit (e.g. 50k or 44.6m)')
-       general.add_option('-R', '--retries',
-                       dest='retries', metavar='RETRIES', help='number of retries (default is 10)', default=10)
-       general.add_option('--dump-user-agent',
-                       action='store_true', dest='dump_user_agent',
-                       help='display the current browser identification', default=False)
-       general.add_option('--list-extractors',
-                       action='store_true', dest='list_extractors',
-                       help='List all supported extractors and the URLs they would handle', default=False)
-
-       selection.add_option('--playlist-start',
-                       dest='playliststart', metavar='NUMBER', help='playlist video to start at (default is 1)', default=1)
-       selection.add_option('--playlist-end',
-                       dest='playlistend', metavar='NUMBER', help='playlist video to end at (default is last)', default=-1)
-       selection.add_option('--match-title', dest='matchtitle', metavar='REGEX',help='download only matching titles (regex or caseless sub-string)')
-       selection.add_option('--reject-title', dest='rejecttitle', metavar='REGEX',help='skip download for matching titles (regex or caseless sub-string)')
-       selection.add_option('--max-downloads', metavar='NUMBER', dest='max_downloads', help='Abort after downloading NUMBER files', default=None)
-
-       authentication.add_option('-u', '--username',
-                       dest='username', metavar='USERNAME', help='account username')
-       authentication.add_option('-p', '--password',
-                       dest='password', metavar='PASSWORD', help='account password')
-       authentication.add_option('-n', '--netrc',
-                       action='store_true', dest='usenetrc', help='use .netrc authentication data', default=False)
-
-
-       video_format.add_option('-f', '--format',
-                       action='store', dest='format', metavar='FORMAT', help='video format code')
-       video_format.add_option('--all-formats',
-                       action='store_const', dest='format', help='download all available video formats', const='all')
-       video_format.add_option('--prefer-free-formats',
-                       action='store_true', dest='prefer_free_formats', default=False, help='prefer free video formats unless a specific one is requested')
-       video_format.add_option('--max-quality',
-                       action='store', dest='format_limit', metavar='FORMAT', help='highest quality format to download')
-       video_format.add_option('-F', '--list-formats',
-                       action='store_true', dest='listformats', help='list all available formats (currently youtube only)')
-
-
-       verbosity.add_option('-q', '--quiet',
-                       action='store_true', dest='quiet', help='activates quiet mode', default=False)
-       verbosity.add_option('-s', '--simulate',
-                       action='store_true', dest='simulate', help='do not download the video and do not write anything to disk', default=False)
-       verbosity.add_option('--skip-download',
-                       action='store_true', dest='skip_download', help='do not download the video', default=False)
-       verbosity.add_option('-g', '--get-url',
-                       action='store_true', dest='geturl', help='simulate, quiet but print URL', default=False)
-       verbosity.add_option('-e', '--get-title',
-                       action='store_true', dest='gettitle', help='simulate, quiet but print title', default=False)
-       verbosity.add_option('--get-thumbnail',
-                       action='store_true', dest='getthumbnail',
-                       help='simulate, quiet but print thumbnail URL', default=False)
-       verbosity.add_option('--get-description',
-                       action='store_true', dest='getdescription',
-                       help='simulate, quiet but print video description', default=False)
-       verbosity.add_option('--get-filename',
-                       action='store_true', dest='getfilename',
-                       help='simulate, quiet but print output filename', default=False)
-       verbosity.add_option('--get-format',
-                       action='store_true', dest='getformat',
-                       help='simulate, quiet but print output format', default=False)
-       verbosity.add_option('--no-progress',
-                       action='store_true', dest='noprogress', help='do not print progress bar', default=False)
-       verbosity.add_option('--console-title',
-                       action='store_true', dest='consoletitle',
-                       help='display progress in console titlebar', default=False)
-       verbosity.add_option('-v', '--verbose',
-                       action='store_true', dest='verbose', help='print various debugging information', default=False)
-
-
-       filesystem.add_option('-t', '--title',
-                       action='store_true', dest='usetitle', help='use title in file name', default=False)
-       filesystem.add_option('-l', '--literal',
-                       action='store_true', dest='useliteral', help='use literal title in file name', default=False)
-       filesystem.add_option('-A', '--auto-number',
-                       action='store_true', dest='autonumber',
-                       help='number downloaded files starting from 00000', default=False)
-       filesystem.add_option('-o', '--output',
-                       dest='outtmpl', metavar='TEMPLATE', help='output filename template. Use %(stitle)s to get the title, %(uploader)s for the uploader name, %(autonumber)s to get an automatically incremented number, %(ext)s for the filename extension, %(upload_date)s for the upload date (YYYYMMDD), and %% for a literal percent. Use - to output to stdout.')
-       filesystem.add_option('-a', '--batch-file',
-                       dest='batchfile', metavar='FILE', help='file containing URLs to download (\'-\' for stdin)')
-       filesystem.add_option('-w', '--no-overwrites',
-                       action='store_true', dest='nooverwrites', help='do not overwrite files', default=False)
-       filesystem.add_option('-c', '--continue',
-                       action='store_true', dest='continue_dl', help='resume partially downloaded files', default=True)
-       filesystem.add_option('--no-continue',
-                       action='store_false', dest='continue_dl',
-                       help='do not resume partially downloaded files (restart from beginning)')
-       filesystem.add_option('--cookies',
-                       dest='cookiefile', metavar='FILE', help='file to read cookies from and dump cookie jar in')
-       filesystem.add_option('--no-part',
-                       action='store_true', dest='nopart', help='do not use .part files', default=False)
-       filesystem.add_option('--no-mtime',
-                       action='store_false', dest='updatetime',
-                       help='do not use the Last-modified header to set the file modification time', default=True)
-       filesystem.add_option('--write-description',
-                       action='store_true', dest='writedescription',
-                       help='write video description to a .description file', default=False)
-       filesystem.add_option('--write-info-json',
-                       action='store_true', dest='writeinfojson',
-                       help='write video metadata to a .info.json file', default=False)
-
-
-       postproc.add_option('--extract-audio', action='store_true', dest='extractaudio', default=False,
-                       help='convert video files to audio-only files (requires ffmpeg and ffprobe)')
-       postproc.add_option('--audio-format', metavar='FORMAT', dest='audioformat', default='best',
-                       help='"best", "aac", "vorbis", "mp3", "m4a", or "wav"; best by default')
-       postproc.add_option('--audio-quality', metavar='QUALITY', dest='audioquality', default='128K',
-                       help='ffmpeg audio bitrate specification, 128k by default')
-       postproc.add_option('-k', '--keep-video', action='store_true', dest='keepvideo', default=False,
-                       help='keeps the video file on disk after the post-processing; the video is erased by default')
-
-
-       parser.add_option_group(general)
-       parser.add_option_group(selection)
-       parser.add_option_group(filesystem)
-       parser.add_option_group(verbosity)
-       parser.add_option_group(video_format)
-       parser.add_option_group(authentication)
-       parser.add_option_group(postproc)
-
-       xdg_config_home = os.environ.get('XDG_CONFIG_HOME')
-       if xdg_config_home:
-               userConf = os.path.join(xdg_config_home, 'youtube-dl.conf')
-       else:
-               userConf = os.path.join(os.path.expanduser('~'), '.config', 'youtube-dl.conf')
-       argv = _readOptions('/etc/youtube-dl.conf') + _readOptions(userConf) + sys.argv[1:]
-       opts, args = parser.parse_args(argv)
-
-       return parser, opts, args
-
-def gen_extractors():
-       """ Return a list of an instance of every supported extractor.
-       The order does matter; the first extractor matched is the one handling the URL.
-       """
-       youtube_ie = YoutubeIE()
-       google_ie = GoogleIE()
-       yahoo_ie = YahooIE()
-       return [
-               YoutubePlaylistIE(youtube_ie),
-               YoutubeUserIE(youtube_ie),
-               YoutubeSearchIE(youtube_ie),
-               youtube_ie,
-               MetacafeIE(youtube_ie),
-               DailymotionIE(),
-               google_ie,
-               GoogleSearchIE(google_ie),
-               PhotobucketIE(),
-               yahoo_ie,
-               YahooSearchIE(yahoo_ie),
-               DepositFilesIE(),
-               FacebookIE(),
-               BlipTVIE(),
-               VimeoIE(),
-               MyVideoIE(),
-               ComedyCentralIE(),
-               EscapistIE(),
-               CollegeHumorIE(),
-               XVideosIE(),
-               SoundcloudIE(),
-               InfoQIE(),
-               MixcloudIE(),
-               StanfordOpenClassroomIE(),
-               MTVIE(),
-
-               GenericIE()
-       ]
-
-def _real_main():
-       parser, opts, args = parseOpts()
-
-       # Open appropriate CookieJar
-       if opts.cookiefile is None:
-               jar = cookielib.CookieJar()
-       else:
-               try:
-                       jar = cookielib.MozillaCookieJar(opts.cookiefile)
-                       if os.path.isfile(opts.cookiefile) and os.access(opts.cookiefile, os.R_OK):
-                               jar.load()
-               except (IOError, OSError), err:
-                       sys.exit(u'ERROR: unable to open cookie file')
-
-       # Dump user agent
-       if opts.dump_user_agent:
-               print std_headers['User-Agent']
-               sys.exit(0)
-
-       # Batch file verification
-       batchurls = []
-       if opts.batchfile is not None:
-               try:
-                       if opts.batchfile == '-':
-                               batchfd = sys.stdin
-                       else:
-                               batchfd = open(opts.batchfile, 'r')
-                       batchurls = batchfd.readlines()
-                       batchurls = [x.strip() for x in batchurls]
-                       batchurls = [x for x in batchurls if len(x) > 0 and not re.search(r'^[#/;]', x)]
-               except IOError:
-                       sys.exit(u'ERROR: batch file could not be read')
-       all_urls = batchurls + args
-
-       # General configuration
-       cookie_processor = urllib2.HTTPCookieProcessor(jar)
-       proxy_handler = urllib2.ProxyHandler()
-       opener = urllib2.build_opener(proxy_handler, cookie_processor, YoutubeDLHandler())
-       urllib2.install_opener(opener)
-       socket.setdefaulttimeout(300) # 5 minutes should be enough (famous last words)
-
-       if opts.verbose:
-               print(u'[debug] Proxy map: ' + str(proxy_handler.proxies))
-
-       extractors = gen_extractors()
-
-       if opts.list_extractors:
-               for ie in extractors:
-                       print(ie.IE_NAME)
-                       matchedUrls = filter(lambda url: ie.suitable(url), all_urls)
-                       all_urls = filter(lambda url: url not in matchedUrls, all_urls)
-                       for mu in matchedUrls:
-                               print(u'  ' + mu)
-               sys.exit(0)
-
-       # Conflicting, missing and erroneous options
-       if opts.usenetrc and (opts.username is not None or opts.password is not None):
-               parser.error(u'using .netrc conflicts with giving username/password')
-       if opts.password is not None and opts.username is None:
-               parser.error(u'account username missing')
-       if opts.outtmpl is not None and (opts.useliteral or opts.usetitle or opts.autonumber):
-               parser.error(u'using output template conflicts with using title, literal title or auto number')
-       if opts.usetitle and opts.useliteral:
-               parser.error(u'using title conflicts with using literal title')
-       if opts.username is not None and opts.password is None:
-               opts.password = getpass.getpass(u'Type account password and press return:')
-       if opts.ratelimit is not None:
-               numeric_limit = FileDownloader.parse_bytes(opts.ratelimit)
-               if numeric_limit is None:
-                       parser.error(u'invalid rate limit specified')
-               opts.ratelimit = numeric_limit
-       if opts.retries is not None:
-               try:
-                       opts.retries = long(opts.retries)
-               except (TypeError, ValueError), err:
-                       parser.error(u'invalid retry count specified')
-       try:
-               opts.playliststart = int(opts.playliststart)
-               if opts.playliststart <= 0:
-                       raise ValueError(u'Playlist start must be positive')
-       except (TypeError, ValueError), err:
-               parser.error(u'invalid playlist start number specified')
-       try:
-               opts.playlistend = int(opts.playlistend)
-               if opts.playlistend != -1 and (opts.playlistend <= 0 or opts.playlistend < opts.playliststart):
-                       raise ValueError(u'Playlist end must be greater than playlist start')
-       except (TypeError, ValueError), err:
-               parser.error(u'invalid playlist end number specified')
-       if opts.extractaudio:
-               if opts.audioformat not in ['best', 'aac', 'mp3', 'vorbis', 'm4a', 'wav']:
-                       parser.error(u'invalid audio format specified')
-
-       # File downloader
-       fd = FileDownloader({
-               'usenetrc': opts.usenetrc,
-               'username': opts.username,
-               'password': opts.password,
-               'quiet': (opts.quiet or opts.geturl or opts.gettitle or opts.getthumbnail or opts.getdescription or opts.getfilename or opts.getformat),
-               'forceurl': opts.geturl,
-               'forcetitle': opts.gettitle,
-               'forcethumbnail': opts.getthumbnail,
-               'forcedescription': opts.getdescription,
-               'forcefilename': opts.getfilename,
-               'forceformat': opts.getformat,
-               'simulate': opts.simulate,
-               'skip_download': (opts.skip_download or opts.simulate or opts.geturl or opts.gettitle or opts.getthumbnail or opts.getdescription or opts.getfilename or opts.getformat),
-               'format': opts.format,
-               'format_limit': opts.format_limit,
-               'listformats': opts.listformats,
-               'outtmpl': ((opts.outtmpl is not None and opts.outtmpl.decode(preferredencoding()))
-                       or (opts.format == '-1' and opts.usetitle and u'%(stitle)s-%(id)s-%(format)s.%(ext)s')
-                       or (opts.format == '-1' and opts.useliteral and u'%(title)s-%(id)s-%(format)s.%(ext)s')
-                       or (opts.format == '-1' and u'%(id)s-%(format)s.%(ext)s')
-                       or (opts.usetitle and opts.autonumber and u'%(autonumber)s-%(stitle)s-%(id)s.%(ext)s')
-                       or (opts.useliteral and opts.autonumber and u'%(autonumber)s-%(title)s-%(id)s.%(ext)s')
-                       or (opts.usetitle and u'%(stitle)s-%(id)s.%(ext)s')
-                       or (opts.useliteral and u'%(title)s-%(id)s.%(ext)s')
-                       or (opts.autonumber and u'%(autonumber)s-%(id)s.%(ext)s')
-                       or u'%(id)s.%(ext)s'),
-               'ignoreerrors': opts.ignoreerrors,
-               'ratelimit': opts.ratelimit,
-               'nooverwrites': opts.nooverwrites,
-               'retries': opts.retries,
-               'continuedl': opts.continue_dl,
-               'noprogress': opts.noprogress,
-               'playliststart': opts.playliststart,
-               'playlistend': opts.playlistend,
-               'logtostderr': opts.outtmpl == '-',
-               'consoletitle': opts.consoletitle,
-               'nopart': opts.nopart,
-               'updatetime': opts.updatetime,
-               'writedescription': opts.writedescription,
-               'writeinfojson': opts.writeinfojson,
-               'matchtitle': opts.matchtitle,
-               'rejecttitle': opts.rejecttitle,
-               'max_downloads': opts.max_downloads,
-               'prefer_free_formats': opts.prefer_free_formats,
-               'verbose': opts.verbose,
-               })
-       for extractor in extractors:
-               fd.add_info_extractor(extractor)
-
-       # PostProcessors
-       if opts.extractaudio:
-               fd.add_post_processor(FFmpegExtractAudioPP(preferredcodec=opts.audioformat, preferredquality=opts.audioquality, keepvideo=opts.keepvideo))
-
-       # Update version
-       if opts.update_self:
-               updateSelf(fd, sys.argv[0])
-
-       # Maybe do nothing
-       if len(all_urls) < 1:
-               if not opts.update_self:
-                       parser.error(u'you must provide at least one URL')
-               else:
-                       sys.exit()
-       
-       try:
-               retcode = fd.download(all_urls)
-       except MaxDownloadsReached:
-               fd.to_screen(u'--max-download limit reached, aborting.')
-               retcode = 101
-
-       # Dump cookie jar if requested
-       if opts.cookiefile is not None:
-               try:
-                       jar.save()
-               except (IOError, OSError), err:
-                       sys.exit(u'ERROR: unable to save cookie jar')
-
-       sys.exit(retcode)
+def _real_main():
+    parser, opts, args = parseOpts()
+
+    # Open appropriate CookieJar
+    if opts.cookiefile is None:
+        jar = compat_cookiejar.CookieJar()
+    else:
+        try:
+            jar = compat_cookiejar.MozillaCookieJar(opts.cookiefile)
+            if os.path.isfile(opts.cookiefile) and os.access(opts.cookiefile, os.R_OK):
+                jar.load()
+        except (IOError, OSError) as err:
+            sys.exit(u'ERROR: unable to open cookie file')
+    # Set user agent
+    if opts.user_agent is not None:
+        std_headers['User-Agent'] = opts.user_agent
+
+    # Dump user agent
+    if opts.dump_user_agent:
+        print(std_headers['User-Agent'])
+        sys.exit(0)
+
+    # Batch file verification
+    batchurls = []
+    if opts.batchfile is not None:
+        try:
+            if opts.batchfile == '-':
+                batchfd = sys.stdin
+            else:
+                batchfd = open(opts.batchfile, 'r')
+            batchurls = batchfd.readlines()
+            batchurls = [x.strip() for x in batchurls]
+            batchurls = [x for x in batchurls if len(x) > 0 and not re.search(r'^[#/;]', x)]
+        except IOError:
+            sys.exit(u'ERROR: batch file could not be read')
+    all_urls = batchurls + args
+    all_urls = [url.strip() for url in all_urls]
+
+    # General configuration
+    cookie_processor = compat_urllib_request.HTTPCookieProcessor(jar)
+    proxy_handler = compat_urllib_request.ProxyHandler()
+    opener = compat_urllib_request.build_opener(proxy_handler, cookie_processor, YoutubeDLHandler())
+    compat_urllib_request.install_opener(opener)
+    socket.setdefaulttimeout(300) # 5 minutes should be enough (famous last words)
+
+    extractors = gen_extractors()
+
+    if opts.list_extractors:
+        for ie in extractors:
+            print(ie.IE_NAME + (' (CURRENTLY BROKEN)' if not ie._WORKING else ''))
+            matchedUrls = filter(lambda url: ie.suitable(url), all_urls)
+            all_urls = filter(lambda url: url not in matchedUrls, all_urls)
+            for mu in matchedUrls:
+                print(u'  ' + mu)
+        sys.exit(0)
+
+    # Conflicting, missing and erroneous options
+    if opts.usenetrc and (opts.username is not None or opts.password is not None):
+        parser.error(u'using .netrc conflicts with giving username/password')
+    if opts.password is not None and opts.username is None:
+        parser.error(u'account username missing')
+    if opts.outtmpl is not None and (opts.usetitle or opts.autonumber or opts.useid):
+        parser.error(u'using output template conflicts with using title, video ID or auto number')
+    if opts.usetitle and opts.useid:
+        parser.error(u'using title conflicts with using video ID')
+    if opts.username is not None and opts.password is None:
+        opts.password = getpass.getpass(u'Type account password and press return:')
+    if opts.ratelimit is not None:
+        numeric_limit = FileDownloader.parse_bytes(opts.ratelimit)
+        if numeric_limit is None:
+            parser.error(u'invalid rate limit specified')
+        opts.ratelimit = numeric_limit
+    if opts.retries is not None:
+        try:
+            opts.retries = int(opts.retries)
+        except (TypeError, ValueError) as err:
+            parser.error(u'invalid retry count specified')
+    if opts.buffersize is not None:
+        numeric_buffersize = FileDownloader.parse_bytes(opts.buffersize)
+        if numeric_buffersize is None:
+            parser.error(u'invalid buffer size specified')
+        opts.buffersize = numeric_buffersize
+    try:
+        opts.playliststart = int(opts.playliststart)
+        if opts.playliststart <= 0:
+            raise ValueError(u'Playlist start must be positive')
+    except (TypeError, ValueError) as err:
+        parser.error(u'invalid playlist start number specified')
+    try:
+        opts.playlistend = int(opts.playlistend)
+        if opts.playlistend != -1 and (opts.playlistend <= 0 or opts.playlistend < opts.playliststart):
+            raise ValueError(u'Playlist end must be greater than playlist start')
+    except (TypeError, ValueError) as err:
+        parser.error(u'invalid playlist end number specified')
+    if opts.extractaudio:
+        if opts.audioformat not in ['best', 'aac', 'mp3', 'vorbis', 'm4a', 'wav']:
+            parser.error(u'invalid audio format specified')
+    if opts.audioquality:
+        opts.audioquality = opts.audioquality.strip('k').strip('K')
+        if not opts.audioquality.isdigit():
+            parser.error(u'invalid audio quality specified')
+
+    # File downloader
+    fd = FileDownloader({
+        'usenetrc': opts.usenetrc,
+        'username': opts.username,
+        'password': opts.password,
+        'quiet': (opts.quiet or opts.geturl or opts.gettitle or opts.getthumbnail or opts.getdescription or opts.getfilename or opts.getformat),
+        'forceurl': opts.geturl,
+        'forcetitle': opts.gettitle,
+        'forcethumbnail': opts.getthumbnail,
+        'forcedescription': opts.getdescription,
+        'forcefilename': opts.getfilename,
+        'forceformat': opts.getformat,
+        'simulate': opts.simulate,
+        'skip_download': (opts.skip_download or opts.simulate or opts.geturl or opts.gettitle or opts.getthumbnail or opts.getdescription or opts.getfilename or opts.getformat),
+        'format': opts.format,
+        'format_limit': opts.format_limit,
+        'listformats': opts.listformats,
+        'outtmpl': ((opts.outtmpl is not None and opts.outtmpl.decode(preferredencoding()))
+            or (opts.format == '-1' and opts.usetitle and u'%(title)s-%(id)s-%(format)s.%(ext)s')
+            or (opts.format == '-1' and u'%(id)s-%(format)s.%(ext)s')
+            or (opts.usetitle and opts.autonumber and u'%(autonumber)s-%(title)s-%(id)s.%(ext)s')
+            or (opts.usetitle and u'%(title)s-%(id)s.%(ext)s')
+            or (opts.useid and u'%(id)s.%(ext)s')
+            or (opts.autonumber and u'%(autonumber)s-%(id)s.%(ext)s')
+            or u'%(id)s.%(ext)s'),
+        'restrictfilenames': opts.restrictfilenames,
+        'ignoreerrors': opts.ignoreerrors,
+        'ratelimit': opts.ratelimit,
+        'nooverwrites': opts.nooverwrites,
+        'retries': opts.retries,
+        'buffersize': opts.buffersize,
+        'noresizebuffer': opts.noresizebuffer,
+        'continuedl': opts.continue_dl,
+        'noprogress': opts.noprogress,
+        'playliststart': opts.playliststart,
+        'playlistend': opts.playlistend,
+        'logtostderr': opts.outtmpl == '-',
+        'consoletitle': opts.consoletitle,
+        'nopart': opts.nopart,
+        'updatetime': opts.updatetime,
+        'writedescription': opts.writedescription,
+        'writeinfojson': opts.writeinfojson,
+        'writesubtitles': opts.writesubtitles,
+        'subtitleslang': opts.subtitleslang,
+        'matchtitle': opts.matchtitle,
+        'rejecttitle': opts.rejecttitle,
+        'max_downloads': opts.max_downloads,
+        'prefer_free_formats': opts.prefer_free_formats,
+        'verbose': opts.verbose,
+        'test': opts.test,
+        })
+
+    if opts.verbose:
+        fd.to_screen(u'[debug] Proxy map: ' + str(proxy_handler.proxies))
+
+    for extractor in extractors:
+        fd.add_info_extractor(extractor)
+
+    # PostProcessors
+    if opts.extractaudio:
+        fd.add_post_processor(FFmpegExtractAudioPP(preferredcodec=opts.audioformat, preferredquality=opts.audioquality, keepvideo=opts.keepvideo))
+
+    # Update version
+    if opts.update_self:
+        updateSelf(fd, sys.argv[0])
+
+    # Maybe do nothing
+    if len(all_urls) < 1:
+        if not opts.update_self:
+            parser.error(u'you must provide at least one URL')
+        else:
+            sys.exit()
+
+    try:
+        retcode = fd.download(all_urls)
+    except MaxDownloadsReached:
+        fd.to_screen(u'--max-download limit reached, aborting.')
+        retcode = 101
+
+    # Dump cookie jar if requested
+    if opts.cookiefile is not None:
+        try:
+            jar.save()
+        except (IOError, OSError) as err:
+            sys.exit(u'ERROR: unable to save cookie jar')
+
+    sys.exit(retcode)

 
 def main():
 
 def main():

-       try:
-               _real_main()
-       except DownloadError:
-               sys.exit(1)
-       except SameFileError:
-               sys.exit(u'ERROR: fixed output name but more than one file to download')
-       except KeyboardInterrupt:
-               sys.exit(u'\nERROR: Interrupted by user')
-
-if __name__ == '__main__':
-       main()
-
-# vim: set ts=4 sw=4 sts=4 noet ai si filetype=python:
+    try:
+        _real_main()
+    except DownloadError:
+        sys.exit(1)
+    except SameFileError:
+        sys.exit(u'ERROR: fixed output name but more than one file to download')
+    except KeyboardInterrupt:
+        sys.exit(u'\nERROR: Interrupted by user')