_ Git - youtube-dl/blob - youtube_dl/extractor/youtube.py

   1 # coding: utf-8
   2
   3 import json
   4 import netrc
   5 import re
   6 import socket
   7 import itertools
   8
   9 from .common import InfoExtractor, SearchInfoExtractor
  10 from .subtitles import SubtitlesIE
  11 from ..utils import (
  12     compat_http_client,
  13     compat_parse_qs,
  14     compat_urllib_error,
  15     compat_urllib_parse,
  16     compat_urllib_request,
  17     compat_str,
  18
  19     clean_html,
  20     get_element_by_id,
  21     ExtractorError,
  22     unescapeHTML,
  23     unified_strdate,
  24     orderedSet,
  25 )
  26
  27
  28 class YoutubeSubtitlesIE(SubtitlesIE):
  29
  30     def _get_available_subtitles(self, video_id):
  31         request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
  32         try:
  33             sub_list = compat_urllib_request.urlopen(request).read().decode('utf-8')
  34         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
  35             self._downloader.report_warning(u'unable to download video subtitles: %s' % compat_str(err))
  36             return {}
  37         lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list)
  38
  39         sub_lang_list = {}
  40         for l in lang_list:
  41             lang = l[1]
  42             params = compat_urllib_parse.urlencode({
  43                 'lang': lang,
  44                 'v': video_id,
  45                 'fmt': self._downloader.params.get('subtitlesformat'),
  46             })
  47             url = u'http://www.youtube.com/api/timedtext?' + params
  48             sub_lang_list[lang] = url
  49         if not sub_lang_list:
  50             self._downloader.report_warning(u'video doesn\'t have subtitles')
  51             return {}
  52         return sub_lang_list
  53
  54     def _request_automatic_caption(self, video_id, webpage):
  55         """We need the webpage for getting the captions url, pass it as an
  56            argument to speed up the process."""
  57         sub_lang = self._downloader.params.get('subtitleslang') or 'en'
  58         sub_format = self._downloader.params.get('subtitlesformat')
  59         self.to_screen(u'%s: Looking for automatic captions' % video_id)
  60         mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
  61         err_msg = u'Couldn\'t find automatic captions for "%s"' % sub_lang
  62         if mobj is None:
  63             self._downloader.report_warning(err_msg)
  64             return {}
  65         player_config = json.loads(mobj.group(1))
  66         try:
  67             args = player_config[u'args']
  68             caption_url = args[u'ttsurl']
  69             timestamp = args[u'timestamp']
  70             params = compat_urllib_parse.urlencode({
  71                 'lang': 'en',
  72                 'tlang': sub_lang,
  73                 'fmt': sub_format,
  74                 'ts': timestamp,
  75                 'kind': 'asr',
  76             })
  77             subtitles_url = caption_url + '&' + params
  78             sub = self._download_webpage(subtitles_url, video_id, u'Downloading automatic captions')
  79             return {sub_lang: sub}
  80         # An extractor error can be raise by the download process if there are
  81         # no automatic captions but there are subtitles
  82         except (KeyError, ExtractorError):
  83             self._downloader.report_warning(err_msg)
  84             return {}
  85
  86
  87 class YoutubeIE(YoutubeSubtitlesIE):
  88     IE_DESC = u'YouTube.com'
  89     _VALID_URL = r"""^
  90                      (
  91                          (?:https?://)?                                       # http(s):// (optional)
  92                          (?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/|
  93                             tube\.majestyc\.net/)                             # the various hostnames, with wildcard subdomains
  94                          (?:.*?\#/)?                                          # handle anchor (#/) redirect urls
  95                          (?:                                                  # the various things that can precede the ID:
  96                              (?:(?:v|embed|e)/)                               # v/ or embed/ or e/
  97                              |(?:                                             # or the v= param in all its forms
  98                                  (?:watch|movie(?:_popup)?(?:\.php)?)?              # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
  99                                  (?:\?|\#!?)                                  # the params delimiter ? or # or #!
 100                                  (?:.*?&)?                                    # any other preceding param (like /?s=tuff&v=xxxx)
 101                                  v=
 102                              )
 103                          )?                                                   # optional -> youtube.com/xxxx is OK
 104                      )?                                                       # all until now is optional -> you can pass the naked ID
 105                      ([0-9A-Za-z_-]+)                                         # here is it! the YouTube video ID
 106                      (?(1).+)?                                                # if we found the ID, everything can follow
 107                      $"""
 108     _LANG_URL = r'https://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1'
 109     _LOGIN_URL = 'https://accounts.google.com/ServiceLogin'
 110     _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'
 111     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
 112     _NETRC_MACHINE = 'youtube'
 113     # Listed in order of quality
 114     _available_formats = ['38', '37', '46', '22', '45', '35', '44', '34', '18', '43', '6', '5', '17', '13']
 115     _available_formats_prefer_free = ['38', '46', '37', '45', '22', '44', '35', '43', '34', '18', '6', '5', '17', '13']
 116     _video_extensions = {
 117         '13': '3gp',
 118         '17': 'mp4',
 119         '18': 'mp4',
 120         '22': 'mp4',
 121         '37': 'mp4',
 122         '38': 'mp4',
 123         '43': 'webm',
 124         '44': 'webm',
 125         '45': 'webm',
 126         '46': 'webm',
 127     }
 128     _video_dimensions = {
 129         '5': '240x400',
 130         '6': '???',
 131         '13': '???',
 132         '17': '144x176',
 133         '18': '360x640',
 134         '22': '720x1280',
 135         '34': '360x640',
 136         '35': '480x854',
 137         '37': '1080x1920',
 138         '38': '3072x4096',
 139         '43': '360x640',
 140         '44': '480x854',
 141         '45': '720x1280',
 142         '46': '1080x1920',
 143     }
 144     IE_NAME = u'youtube'
 145     _TESTS = [
 146         {
 147             u"url":  u"http://www.youtube.com/watch?v=BaW_jenozKc",
 148             u"file":  u"BaW_jenozKc.mp4",
 149             u"info_dict": {
 150                 u"title": u"youtube-dl test video \"'/\\ä↭𝕐",
 151                 u"uploader": u"Philipp Hagemeister",
 152                 u"uploader_id": u"phihag",
 153                 u"upload_date": u"20121002",
 154                 u"description": u"test chars:  \"'/\\ä↭𝕐\n\nThis is a test video for youtube-dl.\n\nFor more information, contact phihag@phihag.de ."
 155             }
 156         },
 157         {
 158             u"url":  u"http://www.youtube.com/watch?v=1ltcDfZMA3U",
 159             u"file":  u"1ltcDfZMA3U.flv",
 160             u"note": u"Test VEVO video (#897)",
 161             u"info_dict": {
 162                 u"upload_date": u"20070518",
 163                 u"title": u"Maps - It Will Find You",
 164                 u"description": u"Music video by Maps performing It Will Find You.",
 165                 u"uploader": u"MuteUSA",
 166                 u"uploader_id": u"MuteUSA"
 167             }
 168         },
 169         {
 170             u"url":  u"http://www.youtube.com/watch?v=UxxajLWwzqY",
 171             u"file":  u"UxxajLWwzqY.mp4",
 172             u"note": u"Test generic use_cipher_signature video (#897)",
 173             u"info_dict": {
 174                 u"upload_date": u"20120506",
 175                 u"title": u"Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]",
 176                 u"description": u"md5:b085c9804f5ab69f4adea963a2dceb3c",
 177                 u"uploader": u"IconaPop",
 178                 u"uploader_id": u"IconaPop"
 179             }
 180         },
 181         {
 182             u"url":  u"https://www.youtube.com/watch?v=07FYdnEawAQ",
 183             u"file":  u"07FYdnEawAQ.mp4",
 184             u"note": u"Test VEVO video with age protection (#956)",
 185             u"info_dict": {
 186                 u"upload_date": u"20130703",
 187                 u"title": u"Justin Timberlake - Tunnel Vision (Explicit)",
 188                 u"description": u"md5:64249768eec3bc4276236606ea996373",
 189                 u"uploader": u"justintimberlakeVEVO",
 190                 u"uploader_id": u"justintimberlakeVEVO"
 191             }
 192         },
 193     ]
 194
 195
 196     @classmethod
 197     def suitable(cls, url):
 198         """Receives a URL and returns True if suitable for this IE."""
 199         if YoutubePlaylistIE.suitable(url) or YoutubeSubscriptionsIE.suitable(url): return False
 200         return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
 201
 202     def report_lang(self):
 203         """Report attempt to set language."""
 204         self.to_screen(u'Setting language')
 205
 206     def report_video_webpage_download(self, video_id):
 207         """Report attempt to download video webpage."""
 208         self.to_screen(u'%s: Downloading video webpage' % video_id)
 209
 210     def report_video_info_webpage_download(self, video_id):
 211         """Report attempt to download video info webpage."""
 212         self.to_screen(u'%s: Downloading video info webpage' % video_id)
 213
 214     def report_information_extraction(self, video_id):
 215         """Report attempt to extract video information."""
 216         self.to_screen(u'%s: Extracting video information' % video_id)
 217
 218     def report_unavailable_format(self, video_id, format):
 219         """Report extracted video URL."""
 220         self.to_screen(u'%s: Format %s not available' % (video_id, format))
 221
 222     def report_rtmp_download(self):
 223         """Indicate the download will use the RTMP protocol."""
 224         self.to_screen(u'RTMP download detected')
 225
 226     def _decrypt_signature(self, s):
 227         """Turn the encrypted s field into a working signature"""
 228
 229         if len(s) == 92:
 230             return s[25] + s[3:25] + s[0] + s[26:42] + s[79] + s[43:79] + s[91] + s[80:83]
 231         elif len(s) == 90:
 232             return s[25] + s[3:25] + s[2] + s[26:40] + s[77] + s[41:77] + s[89] + s[78:81]
 233         elif len(s) == 88:
 234             return s[48] + s[81:67:-1] + s[82] + s[66:62:-1] + s[85] + s[61:48:-1] + s[67] + s[47:12:-1] + s[3] + s[11:3:-1] + s[2] + s[12]
 235         elif len(s) == 87:
 236             return s[62] + s[82:62:-1] + s[83] + s[61:52:-1] + s[0] + s[51:2:-1]
 237         elif len(s) == 86:
 238             return s[2:63] + s[82] + s[64:82] + s[63]
 239         elif len(s) == 85:
 240             return s[2:8] + s[0] + s[9:21] + s[65] + s[22:65] + s[84] + s[66:82] + s[21]
 241         elif len(s) == 84:
 242             return s[83:36:-1] + s[2] + s[35:26:-1] + s[3] + s[25:3:-1] + s[26]
 243         elif len(s) == 83:
 244             return s[6] + s[3:6] + s[33] + s[7:24] + s[0] + s[25:33] + s[53] + s[34:53] + s[24] + s[54:]
 245         elif len(s) == 82:
 246             return s[36] + s[79:67:-1] + s[81] + s[66:40:-1] + s[33] + s[39:36:-1] + s[40] + s[35] + s[0] + s[67] + s[32:0:-1] + s[34]
 247         elif len(s) == 81:
 248             return s[6] + s[3:6] + s[33] + s[7:24] + s[0] + s[25:33] + s[2] + s[34:53] + s[24] + s[54:81]
 249
 250         else:
 251             raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
 252
 253     def _print_formats(self, formats):
 254         print('Available formats:')
 255         for x in formats:
 256             print('%s\t:\t%s\t[%s]' %(x, self._video_extensions.get(x, 'flv'), self._video_dimensions.get(x, '???')))
 257
 258     def _real_initialize(self):
 259         if self._downloader is None:
 260             return
 261
 262         # Set language
 263         request = compat_urllib_request.Request(self._LANG_URL)
 264         try:
 265             self.report_lang()
 266             compat_urllib_request.urlopen(request).read()
 267         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 268             self._downloader.report_warning(u'unable to set language: %s' % compat_str(err))
 269             return
 270
 271         (username, password) = self._get_login_info()
 272
 273         # No authentication to be performed
 274         if username is None:
 275             return
 276
 277         request = compat_urllib_request.Request(self._LOGIN_URL)
 278         try:
 279             login_page = compat_urllib_request.urlopen(request).read().decode('utf-8')
 280         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 281             self._downloader.report_warning(u'unable to fetch login page: %s' % compat_str(err))
 282             return
 283
 284         galx = None
 285         dsh = None
 286         match = re.search(re.compile(r'<input.+?name="GALX".+?value="(.+?)"', re.DOTALL), login_page)
 287         if match:
 288           galx = match.group(1)
 289
 290         match = re.search(re.compile(r'<input.+?name="dsh".+?value="(.+?)"', re.DOTALL), login_page)
 291         if match:
 292           dsh = match.group(1)
 293
 294         # Log in
 295         login_form_strs = {
 296                 u'continue': u'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1',
 297                 u'Email': username,
 298                 u'GALX': galx,
 299                 u'Passwd': password,
 300                 u'PersistentCookie': u'yes',
 301                 u'_utf8': u'霱',
 302                 u'bgresponse': u'js_disabled',
 303                 u'checkConnection': u'',
 304                 u'checkedDomains': u'youtube',
 305                 u'dnConn': u'',
 306                 u'dsh': dsh,
 307                 u'pstMsg': u'0',
 308                 u'rmShown': u'1',
 309                 u'secTok': u'',
 310                 u'signIn': u'Sign in',
 311                 u'timeStmp': u'',
 312                 u'service': u'youtube',
 313                 u'uilel': u'3',
 314                 u'hl': u'en_US',
 315         }
 316         # Convert to UTF-8 *before* urlencode because Python 2.x's urlencode
 317         # chokes on unicode
 318         login_form = dict((k.encode('utf-8'), v.encode('utf-8')) for k,v in login_form_strs.items())
 319         login_data = compat_urllib_parse.urlencode(login_form).encode('ascii')
 320         request = compat_urllib_request.Request(self._LOGIN_URL, login_data)
 321         try:
 322             self.report_login()
 323             login_results = compat_urllib_request.urlopen(request).read().decode('utf-8')
 324             if re.search(r'(?i)<form[^>]* id="gaia_loginform"', login_results) is not None:
 325                 self._downloader.report_warning(u'unable to log in: bad username or password')
 326                 return
 327         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 328             self._downloader.report_warning(u'unable to log in: %s' % compat_str(err))
 329             return
 330
 331         # Confirm age
 332         age_form = {
 333                 'next_url':     '/',
 334                 'action_confirm':   'Confirm',
 335                 }
 336         request = compat_urllib_request.Request(self._AGE_URL, compat_urllib_parse.urlencode(age_form))
 337         try:
 338             self.report_age_confirmation()
 339             compat_urllib_request.urlopen(request).read().decode('utf-8')
 340         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 341             raise ExtractorError(u'Unable to confirm age: %s' % compat_str(err))
 342
 343     def _extract_id(self, url):
 344         mobj = re.match(self._VALID_URL, url, re.VERBOSE)
 345         if mobj is None:
 346             raise ExtractorError(u'Invalid URL: %s' % url)
 347         video_id = mobj.group(2)
 348         return video_id
 349
 350     def _real_extract(self, url):
 351         if re.match(r'(?:https?://)?[^/]+/watch\?feature=[a-z_]+$', url):
 352             self._downloader.report_warning(u'Did you forget to quote the URL? Remember that & is a meta-character in most shells, so you want to put the URL in quotes, like  youtube-dl \'http://www.youtube.com/watch?feature=foo&v=BaW_jenozKc\' (or simply  youtube-dl BaW_jenozKc  ).')
 353
 354         # Extract original video URL from URL with redirection, like age verification, using next_url parameter
 355         mobj = re.search(self._NEXT_URL_RE, url)
 356         if mobj:
 357             url = 'https://www.youtube.com/' + compat_urllib_parse.unquote(mobj.group(1)).lstrip('/')
 358         video_id = self._extract_id(url)
 359
 360         # Get video webpage
 361         self.report_video_webpage_download(video_id)
 362         url = 'https://www.youtube.com/watch?v=%s&gl=US&hl=en&has_verified=1' % video_id
 363         request = compat_urllib_request.Request(url)
 364         try:
 365             video_webpage_bytes = compat_urllib_request.urlopen(request).read()
 366         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 367             raise ExtractorError(u'Unable to download video webpage: %s' % compat_str(err))
 368
 369         video_webpage = video_webpage_bytes.decode('utf-8', 'ignore')
 370
 371         # Attempt to extract SWF player URL
 372         mobj = re.search(r'swfConfig.*?"(http:\\/\\/.*?watch.*?-.*?\.swf)"', video_webpage)
 373         if mobj is not None:
 374             player_url = re.sub(r'\\(.)', r'\1', mobj.group(1))
 375         else:
 376             player_url = None
 377
 378         # Get video info
 379         self.report_video_info_webpage_download(video_id)
 380         if re.search(r'player-age-gate-content">', video_webpage) is not None:
 381             self.report_age_confirmation()
 382             age_gate = True
 383             # We simulate the access to the video from www.youtube.com/v/{video_id}
 384             # this can be viewed without login into Youtube
 385             data = compat_urllib_parse.urlencode({'video_id': video_id,
 386                                                   'el': 'embedded',
 387                                                   'gl': 'US',
 388                                                   'hl': 'en',
 389                                                   'eurl': 'https://youtube.googleapis.com/v/' + video_id,
 390                                                   'asv': 3,
 391                                                   'sts':'1588',
 392                                                   })
 393             video_info_url = 'https://www.youtube.com/get_video_info?' + data
 394             video_info_webpage = self._download_webpage(video_info_url, video_id,
 395                                     note=False,
 396                                     errnote='unable to download video info webpage')
 397             video_info = compat_parse_qs(video_info_webpage)
 398         else:
 399             age_gate = False
 400             for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']:
 401                 video_info_url = ('https://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
 402                         % (video_id, el_type))
 403                 video_info_webpage = self._download_webpage(video_info_url, video_id,
 404                                         note=False,
 405                                         errnote='unable to download video info webpage')
 406                 video_info = compat_parse_qs(video_info_webpage)
 407                 if 'token' in video_info:
 408                     break
 409         if 'token' not in video_info:
 410             if 'reason' in video_info:
 411                 raise ExtractorError(u'YouTube said: %s' % video_info['reason'][0], expected=True)
 412             else:
 413                 raise ExtractorError(u'"token" parameter not in video info for unknown reason')
 414
 415         # Check for "rental" videos
 416         if 'ypc_video_rental_bar_text' in video_info and 'author' not in video_info:
 417             raise ExtractorError(u'"rental" videos not supported')
 418
 419         # Start extracting information
 420         self.report_information_extraction(video_id)
 421
 422         # uploader
 423         if 'author' not in video_info:
 424             raise ExtractorError(u'Unable to extract uploader name')
 425         video_uploader = compat_urllib_parse.unquote_plus(video_info['author'][0])
 426
 427         # uploader_id
 428         video_uploader_id = None
 429         mobj = re.search(r'<link itemprop="url" href="http://www.youtube.com/(?:user|channel)/([^"]+)">', video_webpage)
 430         if mobj is not None:
 431             video_uploader_id = mobj.group(1)
 432         else:
 433             self._downloader.report_warning(u'unable to extract uploader nickname')
 434
 435         # title
 436         if 'title' not in video_info:
 437             raise ExtractorError(u'Unable to extract video title')
 438         video_title = compat_urllib_parse.unquote_plus(video_info['title'][0])
 439
 440         # thumbnail image
 441         # We try first to get a high quality image:
 442         m_thumb = re.search(r'<span itemprop="thumbnail".*?href="(.*?)">',
 443                             video_webpage, re.DOTALL)
 444         if m_thumb is not None:
 445             video_thumbnail = m_thumb.group(1)
 446         elif 'thumbnail_url' not in video_info:
 447             self._downloader.report_warning(u'unable to extract video thumbnail')
 448             video_thumbnail = ''
 449         else:   # don't panic if we can't find it
 450             video_thumbnail = compat_urllib_parse.unquote_plus(video_info['thumbnail_url'][0])
 451
 452         # upload date
 453         upload_date = None
 454         mobj = re.search(r'id="eow-date.*?>(.*?)</span>', video_webpage, re.DOTALL)
 455         if mobj is not None:
 456             upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
 457             upload_date = unified_strdate(upload_date)
 458
 459         # description
 460         video_description = get_element_by_id("eow-description", video_webpage)
 461         if video_description:
 462             video_description = clean_html(video_description)
 463         else:
 464             fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage)
 465             if fd_mobj:
 466                 video_description = unescapeHTML(fd_mobj.group(1))
 467             else:
 468                 video_description = u''
 469
 470         # subtitles
 471         video_subtitles = None
 472
 473         if self._downloader.params.get('writesubtitles', False) or self._downloader.params.get('allsubtitles', False):
 474             video_subtitles = self._extract_subtitles(video_id)
 475         elif self._downloader.params.get('writeautomaticsub', False):
 476             video_subtitles = self._request_automatic_caption(video_id, video_webpage)
 477
 478         if self._downloader.params.get('listsubtitles', False):
 479             self._list_available_subtitles(video_id)
 480             return
 481
 482         if 'length_seconds' not in video_info:
 483             self._downloader.report_warning(u'unable to extract video duration')
 484             video_duration = ''
 485         else:
 486             video_duration = compat_urllib_parse.unquote_plus(video_info['length_seconds'][0])
 487
 488         # Decide which formats to download
 489         req_format = self._downloader.params.get('format', None)
 490
 491         try:
 492             mobj = re.search(r';ytplayer.config = ({.*?});', video_webpage)
 493             if not mobj:
 494                 raise ValueError('Could not find vevo ID')
 495             info = json.loads(mobj.group(1))
 496             args = info['args']
 497             # Easy way to know if the 's' value is in url_encoded_fmt_stream_map
 498             # this signatures are encrypted
 499             m_s = re.search(r'[&,]s=', args['url_encoded_fmt_stream_map'])
 500             if m_s is not None:
 501                 self.to_screen(u'%s: Encrypted signatures detected.' % video_id)
 502                 video_info['url_encoded_fmt_stream_map'] = [args['url_encoded_fmt_stream_map']]
 503         except ValueError:
 504             pass
 505
 506         if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
 507             self.report_rtmp_download()
 508             video_url_list = [(None, video_info['conn'][0])]
 509         elif 'url_encoded_fmt_stream_map' in video_info and len(video_info['url_encoded_fmt_stream_map']) >= 1:
 510             if 'rtmpe%3Dyes' in video_info['url_encoded_fmt_stream_map'][0]:
 511                 raise ExtractorError('rtmpe downloads are not supported, see https://github.com/rg3/youtube-dl/issues/343 for more information.', expected=True)
 512             url_map = {}
 513             for url_data_str in video_info['url_encoded_fmt_stream_map'][0].split(','):
 514                 url_data = compat_parse_qs(url_data_str)
 515                 if 'itag' in url_data and 'url' in url_data:
 516                     url = url_data['url'][0]
 517                     if 'sig' in url_data:
 518                         url += '&signature=' + url_data['sig'][0]
 519                     elif 's' in url_data:
 520                         if self._downloader.params.get('verbose'):
 521                             s = url_data['s'][0]
 522                             if age_gate:
 523                                 player_version = self._search_regex(r'ad3-(.+?)\.swf',
 524                                     video_info['ad3_module'][0], 'flash player',
 525                                     fatal=False)
 526                                 player = 'flash player %s' % player_version
 527                             else:
 528                                 player = u'html5 player %s' % self._search_regex(r'html5player-(.+?)\.js', video_webpage,
 529                                     'html5 player', fatal=False)
 530                             parts_sizes = u'.'.join(compat_str(len(part)) for part in s.split('.'))
 531                             self.to_screen(u'encrypted signature length %d (%s), itag %s, %s' %
 532                                 (len(s), parts_sizes, url_data['itag'][0], player))
 533                         signature = self._decrypt_signature(url_data['s'][0])
 534                         url += '&signature=' + signature
 535                     if 'ratebypass' not in url:
 536                         url += '&ratebypass=yes'
 537                     url_map[url_data['itag'][0]] = url
 538
 539             format_limit = self._downloader.params.get('format_limit', None)
 540             available_formats = self._available_formats_prefer_free if self._downloader.params.get('prefer_free_formats', False) else self._available_formats
 541             if format_limit is not None and format_limit in available_formats:
 542                 format_list = available_formats[available_formats.index(format_limit):]
 543             else:
 544                 format_list = available_formats
 545             existing_formats = [x for x in format_list if x in url_map]
 546             if len(existing_formats) == 0:
 547                 raise ExtractorError(u'no known formats available for video')
 548             if self._downloader.params.get('listformats', None):
 549                 self._print_formats(existing_formats)
 550                 return
 551             if req_format is None or req_format == 'best':
 552                 video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
 553             elif req_format == 'worst':
 554                 video_url_list = [(existing_formats[-1], url_map[existing_formats[-1]])] # worst quality
 555             elif req_format in ('-1', 'all'):
 556                 video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
 557             else:
 558                 # Specific formats. We pick the first in a slash-delimeted sequence.
 559                 # For example, if '1/2/3/4' is requested and '2' and '4' are available, we pick '2'.
 560                 req_formats = req_format.split('/')
 561                 video_url_list = None
 562                 for rf in req_formats:
 563                     if rf in url_map:
 564                         video_url_list = [(rf, url_map[rf])]
 565                         break
 566                 if video_url_list is None:
 567                     raise ExtractorError(u'requested format not available')
 568         else:
 569             raise ExtractorError(u'no conn or url_encoded_fmt_stream_map information found in video info')
 570
 571         results = []
 572         for format_param, video_real_url in video_url_list:
 573             # Extension
 574             video_extension = self._video_extensions.get(format_param, 'flv')
 575
 576             video_format = '{0} - {1}'.format(format_param if format_param else video_extension,
 577                                               self._video_dimensions.get(format_param, '???'))
 578
 579             results.append({
 580                 'id':       video_id,
 581                 'url':      video_real_url,
 582                 'uploader': video_uploader,
 583                 'uploader_id': video_uploader_id,
 584                 'upload_date':  upload_date,
 585                 'title':    video_title,
 586                 'ext':      video_extension,
 587                 'format':   video_format,
 588                 'thumbnail':    video_thumbnail,
 589                 'description':  video_description,
 590                 'player_url':   player_url,
 591                 'subtitles':    video_subtitles,
 592                 'duration':     video_duration
 593             })
 594         return results
 595
 596 class YoutubePlaylistIE(InfoExtractor):
 597     IE_DESC = u'YouTube.com playlists'
 598     _VALID_URL = r"""(?:
 599                         (?:https?://)?
 600                         (?:\w+\.)?
 601                         youtube\.com/
 602                         (?:
 603                            (?:course|view_play_list|my_playlists|artist|playlist|watch)
 604                            \? (?:.*?&)*? (?:p|a|list)=
 605                         |  p/
 606                         )
 607                         ((?:PL|EC|UU)?[0-9A-Za-z-_]{10,})
 608                         .*
 609                      |
 610                         ((?:PL|EC|UU)[0-9A-Za-z-_]{10,})
 611                      )"""
 612     _TEMPLATE_URL = 'https://gdata.youtube.com/feeds/api/playlists/%s?max-results=%i&start-index=%i&v=2&alt=json&safeSearch=none'
 613     _MAX_RESULTS = 50
 614     IE_NAME = u'youtube:playlist'
 615
 616     @classmethod
 617     def suitable(cls, url):
 618         """Receives a URL and returns True if suitable for this IE."""
 619         return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
 620
 621     def _real_extract(self, url):
 622         # Extract playlist id
 623         mobj = re.match(self._VALID_URL, url, re.VERBOSE)
 624         if mobj is None:
 625             raise ExtractorError(u'Invalid URL: %s' % url)
 626
 627         # Download playlist videos from API
 628         playlist_id = mobj.group(1) or mobj.group(2)
 629         page_num = 1
 630         videos = []
 631
 632         while True:
 633             url = self._TEMPLATE_URL % (playlist_id, self._MAX_RESULTS, self._MAX_RESULTS * (page_num - 1) + 1)
 634             page = self._download_webpage(url, playlist_id, u'Downloading page #%s' % page_num)
 635
 636             try:
 637                 response = json.loads(page)
 638             except ValueError as err:
 639                 raise ExtractorError(u'Invalid JSON in API response: ' + compat_str(err))
 640
 641             if 'feed' not in response:
 642                 raise ExtractorError(u'Got a malformed response from YouTube API')
 643             playlist_title = response['feed']['title']['$t']
 644             if 'entry' not in response['feed']:
 645                 # Number of videos is a multiple of self._MAX_RESULTS
 646                 break
 647
 648             for entry in response['feed']['entry']:
 649                 index = entry['yt$position']['$t']
 650                 if 'media$group' in entry and 'media$player' in entry['media$group']:
 651                     videos.append((index, entry['media$group']['media$player']['url']))
 652
 653             if len(response['feed']['entry']) < self._MAX_RESULTS:
 654                 break
 655             page_num += 1
 656
 657         videos = [v[1] for v in sorted(videos)]
 658
 659         url_results = [self.url_result(vurl, 'Youtube') for vurl in videos]
 660         return [self.playlist_result(url_results, playlist_id, playlist_title)]
 661
 662
 663 class YoutubeChannelIE(InfoExtractor):
 664     IE_DESC = u'YouTube.com channels'
 665     _VALID_URL = r"^(?:https?://)?(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/([0-9A-Za-z_-]+)"
 666     _TEMPLATE_URL = 'http://www.youtube.com/channel/%s/videos?sort=da&flow=list&view=0&page=%s&gl=US&hl=en'
 667     _MORE_PAGES_INDICATOR = 'yt-uix-load-more'
 668     _MORE_PAGES_URL = 'http://www.youtube.com/channel_ajax?action_load_more_videos=1&flow=list&paging=%s&view=0&sort=da&channel_id=%s'
 669     IE_NAME = u'youtube:channel'
 670
 671     def extract_videos_from_page(self, page):
 672         ids_in_page = []
 673         for mobj in re.finditer(r'href="/watch\?v=([0-9A-Za-z_-]+)&?', page):
 674             if mobj.group(1) not in ids_in_page:
 675                 ids_in_page.append(mobj.group(1))
 676         return ids_in_page
 677
 678     def _real_extract(self, url):
 679         # Extract channel id
 680         mobj = re.match(self._VALID_URL, url)
 681         if mobj is None:
 682             raise ExtractorError(u'Invalid URL: %s' % url)
 683
 684         # Download channel page
 685         channel_id = mobj.group(1)
 686         video_ids = []
 687         pagenum = 1
 688
 689         url = self._TEMPLATE_URL % (channel_id, pagenum)
 690         page = self._download_webpage(url, channel_id,
 691                                       u'Downloading page #%s' % pagenum)
 692
 693         # Extract video identifiers
 694         ids_in_page = self.extract_videos_from_page(page)
 695         video_ids.extend(ids_in_page)
 696
 697         # Download any subsequent channel pages using the json-based channel_ajax query
 698         if self._MORE_PAGES_INDICATOR in page:
 699             while True:
 700                 pagenum = pagenum + 1
 701
 702                 url = self._MORE_PAGES_URL % (pagenum, channel_id)
 703                 page = self._download_webpage(url, channel_id,
 704                                               u'Downloading page #%s' % pagenum)
 705
 706                 page = json.loads(page)
 707
 708                 ids_in_page = self.extract_videos_from_page(page['content_html'])
 709                 video_ids.extend(ids_in_page)
 710
 711                 if self._MORE_PAGES_INDICATOR  not in page['load_more_widget_html']:
 712                     break
 713
 714         self._downloader.to_screen(u'[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
 715
 716         urls = ['http://www.youtube.com/watch?v=%s' % id for id in video_ids]
 717         url_entries = [self.url_result(eurl, 'Youtube') for eurl in urls]
 718         return [self.playlist_result(url_entries, channel_id)]
 719
 720
 721 class YoutubeUserIE(InfoExtractor):
 722     IE_DESC = u'YouTube.com user videos (URL or "ytuser" keyword)'
 723     _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/user/)|ytuser:)([A-Za-z0-9_-]+)'
 724     _TEMPLATE_URL = 'http://gdata.youtube.com/feeds/api/users/%s'
 725     _GDATA_PAGE_SIZE = 50
 726     _GDATA_URL = 'http://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d'
 727     _VIDEO_INDICATOR = r'/watch\?v=(.+?)[\<&]'
 728     IE_NAME = u'youtube:user'
 729
 730     def _real_extract(self, url):
 731         # Extract username
 732         mobj = re.match(self._VALID_URL, url)
 733         if mobj is None:
 734             raise ExtractorError(u'Invalid URL: %s' % url)
 735
 736         username = mobj.group(1)
 737
 738         # Download video ids using YouTube Data API. Result size per
 739         # query is limited (currently to 50 videos) so we need to query
 740         # page by page until there are no video ids - it means we got
 741         # all of them.
 742
 743         video_ids = []
 744         pagenum = 0
 745
 746         while True:
 747             start_index = pagenum * self._GDATA_PAGE_SIZE + 1
 748
 749             gdata_url = self._GDATA_URL % (username, self._GDATA_PAGE_SIZE, start_index)
 750             page = self._download_webpage(gdata_url, username,
 751                                           u'Downloading video ids from %d to %d' % (start_index, start_index + self._GDATA_PAGE_SIZE))
 752
 753             # Extract video identifiers
 754             ids_in_page = []
 755
 756             for mobj in re.finditer(self._VIDEO_INDICATOR, page):
 757                 if mobj.group(1) not in ids_in_page:
 758                     ids_in_page.append(mobj.group(1))
 759
 760             video_ids.extend(ids_in_page)
 761
 762             # A little optimization - if current page is not
 763             # "full", ie. does not contain PAGE_SIZE video ids then
 764             # we can assume that this page is the last one - there
 765             # are no more ids on further pages - no need to query
 766             # again.
 767
 768             if len(ids_in_page) < self._GDATA_PAGE_SIZE:
 769                 break
 770
 771             pagenum += 1
 772
 773         urls = ['http://www.youtube.com/watch?v=%s' % video_id for video_id in video_ids]
 774         url_results = [self.url_result(rurl, 'Youtube') for rurl in urls]
 775         return [self.playlist_result(url_results, playlist_title = username)]
 776
 777 class YoutubeSearchIE(SearchInfoExtractor):
 778     IE_DESC = u'YouTube.com searches'
 779     _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc'
 780     _MAX_RESULTS = 1000
 781     IE_NAME = u'youtube:search'
 782     _SEARCH_KEY = 'ytsearch'
 783
 784     def report_download_page(self, query, pagenum):
 785         """Report attempt to download search page with given number."""
 786         self._downloader.to_screen(u'[youtube] query "%s": Downloading page %s' % (query, pagenum))
 787
 788     def _get_n_results(self, query, n):
 789         """Get a specified number of results for a query"""
 790
 791         video_ids = []
 792         pagenum = 0
 793         limit = n
 794
 795         while (50 * pagenum) < limit:
 796             self.report_download_page(query, pagenum+1)
 797             result_url = self._API_URL % (compat_urllib_parse.quote_plus(query), (50*pagenum)+1)
 798             request = compat_urllib_request.Request(result_url)
 799             try:
 800                 data = compat_urllib_request.urlopen(request).read().decode('utf-8')
 801             except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 802                 raise ExtractorError(u'Unable to download API page: %s' % compat_str(err))
 803             api_response = json.loads(data)['data']
 804
 805             if not 'items' in api_response:
 806                 raise ExtractorError(u'[youtube] No video results')
 807
 808             new_ids = list(video['id'] for video in api_response['items'])
 809             video_ids += new_ids
 810
 811             limit = min(n, api_response['totalItems'])
 812             pagenum += 1
 813
 814         if len(video_ids) > n:
 815             video_ids = video_ids[:n]
 816         videos = [self.url_result('http://www.youtube.com/watch?v=%s' % id, 'Youtube') for id in video_ids]
 817         return self.playlist_result(videos, query)
 818
 819
 820 class YoutubeShowIE(InfoExtractor):
 821     IE_DESC = u'YouTube.com (multi-season) shows'
 822     _VALID_URL = r'https?://www\.youtube\.com/show/(.*)'
 823     IE_NAME = u'youtube:show'
 824
 825     def _real_extract(self, url):
 826         mobj = re.match(self._VALID_URL, url)
 827         show_name = mobj.group(1)
 828         webpage = self._download_webpage(url, show_name, u'Downloading show webpage')
 829         # There's one playlist for each season of the show
 830         m_seasons = list(re.finditer(r'href="(/playlist\?list=.*?)"', webpage))
 831         self.to_screen(u'%s: Found %s seasons' % (show_name, len(m_seasons)))
 832         return [self.url_result('https://www.youtube.com' + season.group(1), 'YoutubePlaylist') for season in m_seasons]
 833
 834
 835 class YoutubeSubscriptionsIE(YoutubeIE):
 836     """It's a subclass of YoutubeIE because we need to login"""
 837     IE_DESC = u'YouTube.com subscriptions feed, "ytsubs" keyword(requires authentication)'
 838     _VALID_URL = r'https?://www\.youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
 839     IE_NAME = u'youtube:subscriptions'
 840     _FEED_TEMPLATE = 'http://www.youtube.com/feed_ajax?action_load_system_feed=1&feed_name=subscriptions&paging=%s'
 841     _PAGING_STEP = 30
 842
 843     # Overwrite YoutubeIE properties we don't want
 844     _TESTS = []
 845     @classmethod
 846     def suitable(cls, url):
 847         return re.match(cls._VALID_URL, url) is not None
 848
 849     def _real_initialize(self):
 850         (username, password) = self._get_login_info()
 851         if username is None:
 852             raise ExtractorError(u'No login info available, needed for downloading the Youtube subscriptions.', expected=True)
 853         super(YoutubeSubscriptionsIE, self)._real_initialize()
 854
 855     def _real_extract(self, url):
 856         feed_entries = []
 857         # The step argument is available only in 2.7 or higher
 858         for i in itertools.count(0):
 859             paging = i*self._PAGING_STEP
 860             info = self._download_webpage(self._FEED_TEMPLATE % paging, 'feed',
 861                                           u'Downloading page %s' % i)
 862             info = json.loads(info)
 863             feed_html = info['feed_html']
 864             m_ids = re.finditer(r'"/watch\?v=(.*?)"', feed_html)
 865             ids = orderedSet(m.group(1) for m in m_ids)
 866             feed_entries.extend(self.url_result(id, 'Youtube') for id in ids)
 867             if info['paging'] is None:
 868                 break
 869         return self.playlist_result(feed_entries, playlist_title='Youtube Subscriptions')