+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.
+       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.
+       """
+
+       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 pmkdir(filename):
+               """Create directory components in filename. Similar to Unix "mkdir -p"."""
+               components = filename.split(os.sep)
+               aggregate = [os.sep.join(components[0:x]) for x in xrange(1, len(components))]
+               aggregate = ['%s%s' % (x, os.sep) for x in aggregate] # Finish names with separator
+               for dir in aggregate:
+                       if not os.path.exists(dir):
+                               os.mkdir(dir)
+
+       @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, ignore_encoding_errors=False):
+               """Print message to stdout if not in quiet mode."""
+               try:
+                       if not self.params.get('quiet', False):
+                               terminator = [u'\n', u''][skip_eol]
+                               print >>self._screen_file, (u'%s%s' % (message, terminator)).encode(preferredencoding()),
+                       self._screen_file.flush()
+               except (UnicodeEncodeError), err:
+                       if not ignore_encoding_errors:
+                               raise
+
+       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(filename) and not os.path.isfile(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(old_filename, 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(filename):
+                       return
+               timestr = last_modified_hdr
+               if timestr is None:
+                       return
+               filetime = timeconvert(timestr)
+               if filetime is None:
+                       return
+               try:
+                       os.utime(filename,(time.time(), filetime))
+               except:
+                       pass
+
+       def report_destination(self, filename):
+               """Report destination filename."""
+               self.to_screen(u'[download] Destination: %s' % filename, ignore_encoding_errors=True)
+
+       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 process_info(self, info_dict):
+               """Process a single dictionary returned by an InfoExtractor."""
+               filename = self.prepare_filename(info_dict)
+               # Do nothing else if in simulate mode
+               if self.params.get('simulate', False):
+                       # 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')
+
+                       return
+
+               if filename is None:
+                       return
+               if self.params.get('nooverwrites', False) and os.path.exists(filename):
+                       self.to_stderr(u'WARNING: file exists and will be skipped')
+                       return
+
+               try:
+                       self.pmkdir(filename)
+               except (OSError, IOError), err:
+                       self.trouble(u'ERROR: unable to create directories: %s' % str(err))
+                       return
+
+               try:
+                       success = self._do_download(filename, info_dict['url'].encode('utf-8'), info_dict.get('player_url', None))
+               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]
+               retval = subprocess.call(basic_args + [[], ['-e', '-k', '1']][self.params.get('continuedl', False)])
+               while retval == 2 or retval == 1:
+                       prevsize = os.path.getsize(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(tmpfilename)
+                       if prevsize == cursize and retval == 1:
+                               break
+               if retval == 0:
+                       self.to_screen(u'\r[rtmpdump] %s bytes' % os.path.getsize(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, url, player_url):
+               # Check file already present
+               if self.params.get('continuedl', False) and os.path.isfile(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
+               open_mode = 'wb'
+
+               # 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(tmpfilename):
+                       resume_len = os.path.getsize(tmpfilename)
+               else:
+                       resume_len = 0
+
+               # Request parameters in case of being able to resume
+               if self.params.get('continuedl', False) and resume_len != 0:
+                       self.report_resuming_byte(resume_len)
+                       request.add_header('Range','bytes=%d-' % resume_len)
+                       open_mode = 'ab'
+
+               count = 0
+               retries = self.params.get('retries', 0)
+               while count <= retries:
+                       # Establish connection
+                       try:
+                               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)
+                                       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
+                       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)
+                       speed_str = self.calc_speed(start, time.time(), 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)
+
+               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):
+                       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, as well as the suitable() static method.
+       Probably, they should also be instantiated and added to the main
+       downloader.
+       """
+
+       _ready = False
+       _downloader = None
+
+       def __init__(self, downloader=None):
+               """Constructor. Receives an optional downloader."""
+               self._ready = False
+               self.set_downloader(downloader)
+
+       @staticmethod
+       def suitable(url):
+               """Receives a URL and returns True if suitable for this IE."""
+               return False
+
+       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/)(?:(?:(?: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', '34', '43', '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',
+               '45': 'webm',
+       }
+
+       @staticmethod
+       def suitable(url):
+               return (re.match(YoutubeIE._VALID_URL, url) is not None)
+
+       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 _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 = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
+               simple_title = simple_title.strip(ur'_')
+
+               # 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
+               video_description = 'No description available.'
+               if self._downloader.params.get('forcedescription', False):
+                       mobj = re.search(r'<meta name="description" content="(.*)"(?:\s*/)?>', video_webpage)
+                       if mobj is not None:
+                               video_description = mobj.group(1)
+
+               # token
+               video_token = urllib.unquote_plus(video_info['token'][0])
+
+               # Decide which formats to download
+               req_format = self._downloader.params.get('format', None)
+
+               if '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 = [dict(pairStr.split('=') for pairStr in uds.split('&')) for uds in url_data_strs]
+                       url_map = dict((ud['itag'], urllib.unquote(ud['url'])) for ud in url_data)
+                       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 == '-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
+
+               elif 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
+                       self.report_rtmp_download()
+                       video_url_list = [(None, video_info['conn'][0])]
+
+               else:
+                       self._downloader.trouble(u'ERROR: no fmt_url_map or conn 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')
+
+                       # Find the video URL in fmt_url_map or conn paramters
+                       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':   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
+
+       def __init__(self, youtube_ie, downloader=None):
+               InfoExtractor.__init__(self, downloader)
+               self._youtube_ie = youtube_ie
+
+       @staticmethod
+       def suitable(url):
+               return (re.match(MetacafeIE._VALID_URL, url) is not None)
+
+       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/([^_/]+)_([^/]+)'
+
+       def __init__(self, downloader=None):
+               InfoExtractor.__init__(self, downloader)
+
+       @staticmethod
+       def suitable(url):
+               return (re.match(DailymotionIE._VALID_URL, url) is not None)
+
+       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_initialize(self):
+               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
+
+               # At this point we have a new video
+               self._downloader.increment_downloads()
+               video_id = mobj.group(1)
+
+               simple_title = mobj.group(2).decode('utf-8')
+               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 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\(\"video\"\s*,\s*\"([^\"]*)\"\)', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract media URL')
+                       return
+               mediaURL = urllib.unquote(mobj.group(1))
+
+               # if needed add http://www.dailymotion.com/ if relative URL
+
+               video_url = mediaURL
+
+               # '<meta\s+name="title"\s+content="Dailymotion\s*[:\-]\s*(.*?)"\s*\/\s*>'
+               mobj = re.search(r'(?im)<title>Dailymotion\s*[\-:]\s*(.+?)</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'(?im)<Attribute name="owner">(.+?)</Attribute>', 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=([^\&]+).*'
+
+       def __init__(self, downloader=None):
+               InfoExtractor.__init__(self, downloader)
+
+       @staticmethod
+       def suitable(url):
+               return (re.match(GoogleIE._VALID_URL, url) is not None)
+
+       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_initialize(self):
+               return
+
+       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 = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', 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)'
+
+       def __init__(self, downloader=None):
+               InfoExtractor.__init__(self, downloader)
+
+       @staticmethod
+       def suitable(url):
+               return (re.match(PhotobucketIE._VALID_URL, url) is not None)
+
+       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_initialize(self):
+               return
+
+       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