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[youtubedl] / youtube-dl
1 #!/usr/bin/env python
2 #
3 # Copyright (c) 2006-2007 Ricardo Garcia Gonzalez
4 #
5 # Permission is hereby granted, free of charge, to any person obtaining a
6 # copy of this software and associated documentation files (the "Software"),
7 # to deal in the Software without restriction, including without limitation
8 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 # and/or sell copies of the Software, and to permit persons to whom the
10 # Software is furnished to do so, subject to the following conditions:
11 #
12 # The above copyright notice and this permission notice shall be included
13 # in all copies or substantial portions of the Software.
14 #
15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 # OTHER DEALINGS IN THE SOFTWARE.
22 #
23 # Except as contained in this notice, the name(s) of the above copyright
24 # holders shall not be used in advertising or otherwise to promote the
25 # sale, use or other dealings in this Software without prior written
26 # authorization.
27 #
28 import getpass
29 import httplib
30 import math
31 import netrc
32 import optparse
33 import os
34 import re
35 import socket
36 import string
37 import sys
38 import time
39 import urllib2
40
41 # Global constants
42 const_video_url_str = 'http://www.youtube.com/watch?v=%s'
43 const_video_url_re = re.compile(r'^((?:http://)?(?:www\d*\.)?youtube\.com/(?:v/|(?:watch(?:\.php)?)?\?(?:.+&)?v=))?([0-9A-Za-z_-]+)(?(1)[&/].*)?$')
44 const_login_url_str = 'http://www.youtube.com/login?next=/watch%%3Fv%%3D%s'
45 const_login_post_str = 'current_form=loginForm&next=%%2Fwatch%%3Fv%%3D%s&username=%s&password=%s&action_login=Log+In'
46 const_age_url_str = 'http://www.youtube.com/verify_age?next_url=/watch%%3Fv%%3D%s'
47 const_age_post_str = 'next_url=%%2Fwatch%%3Fv%%3D%s&action_confirm=Confirm'
48 const_video_url_params_re = re.compile(r'player2\.swf\?([^"]+)"', re.M)
49 const_video_url_real_str = 'http://www.youtube.com/get_video?%s'
50 const_video_title_re = re.compile(r'<title>YouTube - ([^<]*)</title>', re.M | re.I)
51 const_1k = 1024
52 const_initial_block_size = 10 * const_1k
53
54 # Print error message, followed by standard advice information, and then exit
55 def error_advice_exit(error_text):
56 sys.stderr.write('Error: %s.\n' % error_text)
57 sys.stderr.write('Try again several times. It may be a temporary problem.\n')
58 sys.stderr.write('Other typical problems:\n\n')
59 sys.stderr.write('* Video no longer exists.\n')
60 sys.stderr.write('* Video requires age confirmation but you did not provide an account.\n')
61 sys.stderr.write('* You provided the account data, but it is not valid.\n')
62 sys.stderr.write('* The connection was cut suddenly for some reason.\n')
63 sys.stderr.write('* YouTube changed their system, and the program no longer works.\n')
64 sys.stderr.write('\nTry to confirm you are able to view the video using a web browser.\n')
65 sys.stderr.write('Use the same video URL and account information, if needed, with this program.\n')
66 sys.stderr.write('When using a proxy, make sure http_proxy has http://host:port format.\n')
67 sys.stderr.write('Try again several times and contact me if the problem persists.\n')
68 sys.exit('\n')
69
70 # Wrapper to create custom requests with typical headers
71 def request_create(url, data=None):
72 retval = urllib2.Request(url)
73 if data is not None:
74 retval.add_data(data)
75 # Try to mimic Firefox, at least a little bit
76 retval.add_header('User-Agent', 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0')
77 retval.add_header('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.7')
78 retval.add_header('Accept', 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5')
79 retval.add_header('Accept-Language', 'en-us,en;q=0.5')
80 return retval
81
82 # Perform a request, process headers and return response
83 def perform_request(url, data=None):
84 request = request_create(url, data)
85 response = urllib2.urlopen(request)
86 return response
87
88 # Conditional print
89 def cond_print(str):
90 global cmdl_opts
91 if not (cmdl_opts.quiet or cmdl_opts.get_url):
92 sys.stdout.write(str)
93 sys.stdout.flush()
94
95 # Title string normalization
96 def title_string_norm(title):
97 title = ''.join((x in string.ascii_letters or x in string.digits) and x or ' ' for x in title)
98 title = '_'.join(title.split())
99 title = title.lower()
100 return title
101
102 # Title string minimal transformation
103 def title_string_touch(title):
104 return title.replace(os.sep, '%')
105
106 # Generic download step
107 def download_step(return_data_flag, step_title, step_error, url, post_data=None):
108 try:
109 cond_print('%s... ' % step_title)
110 data = perform_request(url, post_data).read()
111 cond_print('done.\n')
112 if return_data_flag:
113 return data
114 return None
115
116 except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError, socket.error):
117 cond_print('failed.\n')
118 error_advice_exit(step_error)
119
120 except KeyboardInterrupt:
121 sys.exit('\n')
122
123 # Generic extract step
124 def extract_step(step_title, step_error, regexp, data):
125 try:
126 cond_print('%s... ' % step_title)
127 match = regexp.search(data)
128
129 if match is None:
130 cond_print('failed.\n')
131 error_advice_exit(step_error)
132
133 extracted_data = match.group(1)
134 cond_print('done.\n')
135 return extracted_data
136
137 except KeyboardInterrupt:
138 sys.exit('\n')
139
140 # Calculate new block size based on previous block size
141 def new_block_size(before, after, bytes):
142 new_min = max(bytes / 2.0, 1.0)
143 new_max = max(bytes * 2.0, 1.0)
144 dif = after - before
145 if dif < 0.0001:
146 return int(new_max)
147 rate = bytes / dif
148 if rate > new_max:
149 return int(new_max)
150 if rate < new_min:
151 return int(new_min)
152 return int(rate)
153
154 # Get optimum 1k exponent to represent a number of bytes
155 def optimum_k_exp(num_bytes):
156 global const_1k
157 if num_bytes == 0:
158 return 0
159 return long(math.log(num_bytes, const_1k))
160
161 # Get optimum representation of number of bytes
162 def format_bytes(num_bytes):
163 global const_1k
164 try:
165 exp = optimum_k_exp(num_bytes)
166 suffix = 'bkMGTPEZY'[exp]
167 if exp == 0:
168 return '%s%s' % (num_bytes, suffix)
169 converted = float(num_bytes) / float(const_1k**exp)
170 return '%.2f%s' % (converted, suffix)
171 except IndexError:
172 sys.exit('Error: internal error formatting number of bytes.')
173
174 # Calculate ETA and return it in string format as MM:SS
175 def calc_eta(start, now, total, current):
176 if current == 0:
177 return '--:--'
178 rate = float(current) / (now - start)
179 eta = long((total - current) / rate)
180 eta_mins = eta / 60
181 eta_secs = eta % 60
182 if eta_mins > 99:
183 return '--:--'
184 return '%02d:%02d' % (eta_mins, eta_secs)
185
186 # Calculate speed and return it in string format
187 def calc_speed(start, now, bytes):
188 if bytes == 0:
189 return 'N/A b'
190 return format_bytes(float(bytes) / (now - start))
191
192 # Create the command line options parser and parse command line
193 cmdl_usage = 'usage: %prog [options] video_url'
194 cmdl_version = '2007.06.06'
195 cmdl_parser = optparse.OptionParser(usage=cmdl_usage, version=cmdl_version, conflict_handler='resolve')
196 cmdl_parser.add_option('-h', '--help', action='help', help='print this help text and exit')
197 cmdl_parser.add_option('-v', '--version', action='version', help='print program version and exit')
198 cmdl_parser.add_option('-u', '--username', dest='username', metavar='USERNAME', help='account username')
199 cmdl_parser.add_option('-p', '--password', dest='password', metavar='PASSWORD', help='account password')
200 cmdl_parser.add_option('-o', '--output', dest='outfile', metavar='FILE', help='output video file name')
201 cmdl_parser.add_option('-q', '--quiet', action='store_true', dest='quiet', help='activates quiet mode')
202 cmdl_parser.add_option('-s', '--simulate', action='store_true', dest='simulate', help='do not download video')
203 cmdl_parser.add_option('-t', '--title', action='store_true', dest='use_title', help='use title in file name')
204 cmdl_parser.add_option('-l', '--literal', action='store_true', dest='use_literal', help='use literal title in file name')
205 cmdl_parser.add_option('-n', '--netrc', action='store_true', dest='use_netrc', help='use .netrc authentication data')
206 cmdl_parser.add_option('-g', '--get-url', action='store_true', dest='get_url', help='print final video URL only')
207 cmdl_parser.add_option('-2', '--title-too', action='store_true', dest='get_title', help='used with -g, print title too')
208 (cmdl_opts, cmdl_args) = cmdl_parser.parse_args()
209
210 # Get video URL
211 if len(cmdl_args) != 1:
212 cmdl_parser.print_help()
213 sys.exit('\n')
214 video_url_cmdl = cmdl_args[0]
215
216 # Verify video URL format and convert to "standard" format
217 video_url_mo = const_video_url_re.match(video_url_cmdl)
218 if video_url_mo is None:
219 sys.exit('Error: URL does not seem to be a youtube video URL. If it is, report a bug.')
220 video_url_id = video_url_mo.group(2)
221 video_url = const_video_url_str % video_url_id
222
223 # Check conflicting options
224 if cmdl_opts.outfile is not None and (cmdl_opts.simulate or cmdl_opts.get_url):
225 sys.stderr.write('Warning: video file name given but will not be used.\n')
226
227 if cmdl_opts.outfile is not None and (cmdl_opts.use_title or cmdl_opts.use_literal):
228 sys.exit('Error: using the video title conflicts with using a given file name.')
229
230 if cmdl_opts.use_netrc and cmdl_opts.password is not None:
231 sys.exit('Error: using netrc conflicts with giving command line password.')
232
233 if cmdl_opts.use_title and cmdl_opts.use_literal:
234 sys.exit('Error: cannot use title and literal title at the same time.')
235
236 if cmdl_opts.quiet and cmdl_opts.get_url:
237 sys.exit('Error: cannot be quiet and print final URL at the same time.')
238
239 # Incorrect option formatting
240 if cmdl_opts.username is None and cmdl_opts.password is not None:
241 sys.exit('Error: password give but username is missing.')
242
243 if cmdl_opts.get_url is None and cmdl_opts.get_title is not None:
244 sys.exit('Error: getting title requires getting URL.')
245
246 # Get account information if any
247 account_username = None
248 account_password = None
249
250 if cmdl_opts.use_netrc:
251 try:
252 info = netrc.netrc().authenticators('youtube')
253 if info is None:
254 sys.exit('Error: no authenticators for machine youtube.')
255 netrc_username = info[0]
256 netrc_password = info[2]
257 except IOError:
258 sys.exit('Error: unable to read .netrc file.')
259 except netrc.NetrcParseError:
260 sys.exit('Error: unable to parse .netrc file.')
261
262 if cmdl_opts.password is not None:
263 account_username = cmdl_opts.username
264 account_password = cmdl_opts.password
265 else:
266 if cmdl_opts.username is not None and cmdl_opts.use_netrc:
267 if cmdl_opts.username != netrc_username:
268 sys.exit('Error: conflicting username from .netrc and command line options.')
269 account_username = cmdl_opts.username
270 account_password = netrc_password
271 elif cmdl_opts.username is not None:
272 account_username = cmdl_opts.username
273 account_password = getpass.getpass('Type YouTube password and press return: ')
274 elif cmdl_opts.use_netrc:
275 if len(netrc_username) == 0:
276 sys.exit('Error: empty username in .netrc file.')
277 account_username = netrc_username
278 account_password = netrc_password
279
280 # Get output file name
281 if cmdl_opts.outfile is None:
282 video_filename = '%s.flv' % video_url_id
283 else:
284 video_filename = cmdl_opts.outfile
285
286 # Check name
287 if not video_filename.lower().endswith('.flv'):
288 sys.stderr.write('Warning: video file name does not end in .flv\n')
289
290 # Test writable file
291 if not (cmdl_opts.simulate or cmdl_opts.get_url):
292 try:
293 disk_test = open(video_filename, 'wb')
294 disk_test.close()
295
296 except (OSError, IOError):
297 sys.exit('Error: unable to open %s for writing.' % video_filename)
298
299 # Install cookie and proxy handlers
300 urllib2.install_opener(urllib2.build_opener(urllib2.ProxyHandler()))
301 urllib2.install_opener(urllib2.build_opener(urllib2.HTTPCookieProcessor()))
302
303 # Log in and confirm age if needed
304 if account_username is not None:
305 url = const_login_url_str % video_url_id
306 post = const_login_post_str % (video_url_id, account_username, account_password)
307 download_step(False, 'Logging in', 'unable to log in', url, post)
308
309 url = const_age_url_str % video_url_id
310 post = const_age_post_str % video_url_id
311 download_step(False, 'Confirming age', 'unable to confirm age', url, post)
312
313 # Retrieve video webpage
314 video_webpage = download_step(True, 'Retrieving video webpage', 'unable to retrieve video webpage', video_url)
315
316 # Extract video title if needed
317 if cmdl_opts.use_title or cmdl_opts.use_literal or cmdl_opts.get_title:
318 video_title = extract_step('Extracting video title', 'unable to extract video title', const_video_title_re, video_webpage)
319
320 # Extract needed video URL parameters
321 video_url_params = extract_step('Extracting video URL parameters', 'unable to extract URL parameters', const_video_url_params_re, video_webpage)
322 video_url_real = const_video_url_real_str % video_url_params
323
324 # Retrieve video data
325 try:
326 video_data = perform_request(video_url_real)
327 cond_print('Video data found at %s\n' % video_data.geturl())
328
329 if cmdl_opts.get_title:
330 print video_title
331
332 if cmdl_opts.get_url:
333 print video_data.geturl()
334
335 if cmdl_opts.simulate or cmdl_opts.get_url:
336 sys.exit()
337
338 video_file = open(video_filename, 'wb')
339 try:
340 video_len = long(video_data.info()['Content-length'])
341 video_len_str = format_bytes(video_len)
342 except KeyError:
343 video_len = None
344 video_len_str = 'N/A'
345
346 byte_counter = 0
347 block_size = const_initial_block_size
348 start_time = time.time()
349 while True:
350 if video_len is not None:
351 percent = float(byte_counter) / float(video_len) * 100.0
352 percent_str = '%.1f' % percent
353 eta_str = calc_eta(start_time, time.time(), video_len, byte_counter)
354 else:
355 percent_str = '---.-'
356 eta_str = '--:--'
357 counter = format_bytes(byte_counter)
358 speed_str = calc_speed(start_time, time.time(), byte_counter)
359 cond_print('\rRetrieving video data: %5s%% (%8s of %s) at %8s/s ETA %s ' % (percent_str, counter, video_len_str, speed_str, eta_str))
360
361 before = time.time()
362 video_block = video_data.read(block_size)
363 after = time.time()
364 dl_bytes = len(video_block)
365 if dl_bytes == 0:
366 break
367 byte_counter += dl_bytes
368 video_file.write(video_block)
369 block_size = new_block_size(before, after, dl_bytes)
370
371 if video_len is not None and byte_counter != video_len:
372 error_advice_exit('server did not send the expected ammount of data')
373
374 video_file.close()
375 cond_print('done.\n')
376 cond_print('Video data saved to %s\n' % video_filename)
377
378 except (urllib2.URLError, ValueError, httplib.HTTPException, TypeError, socket.error):
379 cond_print('failed.\n')
380 error_advice_exit('unable to download video data')
381
382 except KeyboardInterrupt:
383 sys.exit('\n')
384
385 # Rename video file if needed
386 if cmdl_opts.use_title or cmdl_opts.use_literal:
387 try:
388 if cmdl_opts.use_title:
389 prefix = title_string_norm(video_title)
390 else:
391 prefix = title_string_touch(video_title)
392 final_filename = '%s-%s.flv' % (prefix, video_url_id)
393 os.rename(video_filename, final_filename)
394 cond_print('Video file renamed to %s\n' % final_filename)
395
396 except OSError:
397 sys.stderr.write('Warning: unable to rename file.\n')
398
399 except KeyboardInterrupt:
400 sys.exit('\n')
401
402 # Finish
403 sys.exit()