_ 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 ..utils import (
  11     compat_http_client,
  12     compat_parse_qs,
  13     compat_urllib_error,
  14     compat_urllib_parse,
  15     compat_urllib_request,
  16     compat_str,
  17
  18     clean_html,
  19     get_element_by_id,
  20     ExtractorError,
  21     unescapeHTML,
  22     unified_strdate,
  23     orderedSet,
  24 )
  25
  26
  27 class YoutubeIE(InfoExtractor):
  28     IE_DESC = u'YouTube.com'
  29     _VALID_URL = r"""^
  30                      (
  31                          (?:https?://)?                                       # http(s):// (optional)
  32                          (?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/|
  33                             tube\.majestyc\.net/)                             # the various hostnames, with wildcard subdomains
  34                          (?:.*?\#/)?                                          # handle anchor (#/) redirect urls
  35                          (?:                                                  # the various things that can precede the ID:
  36                              (?:(?:v|embed|e)/)                               # v/ or embed/ or e/
  37                              |(?:                                             # or the v= param in all its forms
  38                                  (?:watch|movie(?:_popup)?(?:\.php)?)?              # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
  39                                  (?:\?|\#!?)                                  # the params delimiter ? or # or #!
  40                                  (?:.*?&)?                                    # any other preceding param (like /?s=tuff&v=xxxx)
  41                                  v=
  42                              )
  43                          )?                                                   # optional -> youtube.com/xxxx is OK
  44                      )?                                                       # all until now is optional -> you can pass the naked ID
  45                      ([0-9A-Za-z_-]+)                                         # here is it! the YouTube video ID
  46                      (?(1).+)?                                                # if we found the ID, everything can follow
  47                      $"""
  48     _LANG_URL = r'https://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1'
  49     _LOGIN_URL = 'https://accounts.google.com/ServiceLogin'
  50     _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'
  51     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
  52     _NETRC_MACHINE = 'youtube'
  53     # Listed in order of quality
  54     _available_formats = ['38', '37', '46', '22', '45', '35', '44', '34', '18', '43', '6', '5', '17', '13']
  55     _available_formats_prefer_free = ['38', '46', '37', '45', '22', '44', '35', '43', '34', '18', '6', '5', '17', '13']
  56     _video_extensions = {
  57         '13': '3gp',
  58         '17': 'mp4',
  59         '18': 'mp4',
  60         '22': 'mp4',
  61         '37': 'mp4',
  62         '38': 'mp4',
  63         '43': 'webm',
  64         '44': 'webm',
  65         '45': 'webm',
  66         '46': 'webm',
  67     }
  68     _video_dimensions = {
  69         '5': '240x400',
  70         '6': '???',
  71         '13': '???',
  72         '17': '144x176',
  73         '18': '360x640',
  74         '22': '720x1280',
  75         '34': '360x640',
  76         '35': '480x854',
  77         '37': '1080x1920',
  78         '38': '3072x4096',
  79         '43': '360x640',
  80         '44': '480x854',
  81         '45': '720x1280',
  82         '46': '1080x1920',
  83     }
  84     IE_NAME = u'youtube'
  85     _TESTS = [
  86         {
  87             u"url":  u"http://www.youtube.com/watch?v=BaW_jenozKc",
  88             u"file":  u"BaW_jenozKc.mp4",
  89             u"info_dict": {
  90                 u"title": u"youtube-dl test video \"'/\\ä↭𝕐",
  91                 u"uploader": u"Philipp Hagemeister",
  92                 u"uploader_id": u"phihag",
  93                 u"upload_date": u"20121002",
  94                 u"description": u"test chars:  \"'/\\ä↭𝕐\n\nThis is a test video for youtube-dl.\n\nFor more information, contact phihag@phihag.de ."
  95             }
  96         },
  97         {
  98             u"url":  u"http://www.youtube.com/watch?v=1ltcDfZMA3U",
  99             u"file":  u"1ltcDfZMA3U.flv",
 100             u"note": u"Test VEVO video (#897)",
 101             u"info_dict": {
 102                 u"upload_date": u"20070518",
 103                 u"title": u"Maps - It Will Find You",
 104                 u"description": u"Music video by Maps performing It Will Find You.",
 105                 u"uploader": u"MuteUSA",
 106                 u"uploader_id": u"MuteUSA"
 107             }
 108         },
 109         {
 110             u"url":  u"http://www.youtube.com/watch?v=UxxajLWwzqY",
 111             u"file":  u"UxxajLWwzqY.mp4",
 112             u"note": u"Test generic use_cipher_signature video (#897)",
 113             u"info_dict": {
 114                 u"upload_date": u"20120506",
 115                 u"title": u"Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]",
 116                 u"description": u"md5:b085c9804f5ab69f4adea963a2dceb3c",
 117                 u"uploader": u"IconaPop",
 118                 u"uploader_id": u"IconaPop"
 119             }
 120         },
 121         {
 122             u"url":  u"https://www.youtube.com/watch?v=07FYdnEawAQ",
 123             u"file":  u"07FYdnEawAQ.mp4",
 124             u"note": u"Test VEVO video with age protection (#956)",
 125             u"info_dict": {
 126                 u"upload_date": u"20130703",
 127                 u"title": u"Justin Timberlake - Tunnel Vision (Explicit)",
 128                 u"description": u"md5:64249768eec3bc4276236606ea996373",
 129                 u"uploader": u"justintimberlakeVEVO",
 130                 u"uploader_id": u"justintimberlakeVEVO"
 131             }
 132         },
 133     ]
 134
 135
 136     @classmethod
 137     def suitable(cls, url):
 138         """Receives a URL and returns True if suitable for this IE."""
 139         if YoutubePlaylistIE.suitable(url) or YoutubeSubscriptionsIE.suitable(url): return False
 140         return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
 141
 142     def report_lang(self):
 143         """Report attempt to set language."""
 144         self.to_screen(u'Setting language')
 145
 146     def report_video_webpage_download(self, video_id):
 147         """Report attempt to download video webpage."""
 148         self.to_screen(u'%s: Downloading video webpage' % video_id)
 149
 150     def report_video_info_webpage_download(self, video_id):
 151         """Report attempt to download video info webpage."""
 152         self.to_screen(u'%s: Downloading video info webpage' % video_id)
 153
 154     def report_video_subtitles_download(self, video_id):
 155         """Report attempt to download video info webpage."""
 156         self.to_screen(u'%s: Checking available subtitles' % video_id)
 157
 158     def report_video_subtitles_request(self, video_id, sub_lang, format):
 159         """Report attempt to download video info webpage."""
 160         self.to_screen(u'%s: Downloading video subtitles for %s.%s' % (video_id, sub_lang, format))
 161
 162     def report_video_subtitles_available(self, video_id, sub_lang_list):
 163         """Report available subtitles."""
 164         sub_lang = ",".join(list(sub_lang_list.keys()))
 165         self.to_screen(u'%s: Available subtitles for video: %s' % (video_id, sub_lang))
 166
 167     def report_information_extraction(self, video_id):
 168         """Report attempt to extract video information."""
 169         self.to_screen(u'%s: Extracting video information' % video_id)
 170
 171     def report_unavailable_format(self, video_id, format):
 172         """Report extracted video URL."""
 173         self.to_screen(u'%s: Format %s not available' % (video_id, format))
 174
 175     def report_rtmp_download(self):
 176         """Indicate the download will use the RTMP protocol."""
 177         self.to_screen(u'RTMP download detected')
 178
 179     def _decrypt_signature(self, s):
 180         """Turn the encrypted s field into a working signature"""
 181
 182         def voodoo(a, b):
 183             c = a[0];
 184             a[0] = a[b % len(a)];
 185             a[b] = c;
 186             return a;
 187
 188         s = list(s)
 189         s = s[2:len(s)];
 190         s = s[::-1];
 191         s = s[3:len(s)];
 192         s = voodoo(s, 9);
 193         s = s[3:len(s)];
 194         s = voodoo(s, 43);
 195         s = s[3:len(s)];
 196         s = s[::-1];
 197         s = voodoo(s, 23);
 198         s = "".join(s);
 199         return s;
 200
 201     def _get_available_subtitles(self, video_id):
 202         self.report_video_subtitles_download(video_id)
 203         request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
 204         try:
 205             sub_list = compat_urllib_request.urlopen(request).read().decode('utf-8')
 206         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 207             return (u'unable to download video subtitles: %s' % compat_str(err), None)
 208         sub_lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list)
 209         sub_lang_list = dict((l[1], l[0]) for l in sub_lang_list)
 210         if not sub_lang_list:
 211             return (u'video doesn\'t have subtitles', None)
 212         return sub_lang_list
 213
 214     def _list_available_subtitles(self, video_id):
 215         sub_lang_list = self._get_available_subtitles(video_id)
 216         self.report_video_subtitles_available(video_id, sub_lang_list)
 217
 218     def _request_subtitle(self, sub_lang, sub_name, video_id, format):
 219         """
 220         Return tuple:
 221         (error_message, sub_lang, sub)
 222         """
 223         self.report_video_subtitles_request(video_id, sub_lang, format)
 224         params = compat_urllib_parse.urlencode({
 225             'lang': sub_lang,
 226             'name': sub_name,
 227             'v': video_id,
 228             'fmt': format,
 229         })
 230         url = 'http://www.youtube.com/api/timedtext?' + params
 231         try:
 232             sub = compat_urllib_request.urlopen(url).read().decode('utf-8')
 233         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 234             return (u'unable to download video subtitles: %s' % compat_str(err), None, None)
 235         if not sub:
 236             return (u'Did not fetch video subtitles', None, None)
 237         return (None, sub_lang, sub)
 238
 239     def _request_automatic_caption(self, video_id, webpage):
 240         """We need the webpage for getting the captions url, pass it as an
 241            argument to speed up the process."""
 242         sub_lang = self._downloader.params.get('subtitleslang') or 'en'
 243         sub_format = self._downloader.params.get('subtitlesformat')
 244         self.to_screen(u'%s: Looking for automatic captions' % video_id)
 245         mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
 246         err_msg = u'Couldn\'t find automatic captions for "%s"' % sub_lang
 247         if mobj is None:
 248             return [(err_msg, None, None)]
 249         player_config = json.loads(mobj.group(1))
 250         try:
 251             args = player_config[u'args']
 252             caption_url = args[u'ttsurl']
 253             timestamp = args[u'timestamp']
 254             params = compat_urllib_parse.urlencode({
 255                 'lang': 'en',
 256                 'tlang': sub_lang,
 257                 'fmt': sub_format,
 258                 'ts': timestamp,
 259                 'kind': 'asr',
 260             })
 261             subtitles_url = caption_url + '&' + params
 262             sub = self._download_webpage(subtitles_url, video_id, u'Downloading automatic captions')
 263             return [(None, sub_lang, sub)]
 264         except KeyError:
 265             return [(err_msg, None, None)]
 266
 267     def _extract_subtitle(self, video_id):
 268         """
 269         Return a list with a tuple:
 270         [(error_message, sub_lang, sub)]
 271         """
 272         sub_lang_list = self._get_available_subtitles(video_id)
 273         sub_format = self._downloader.params.get('subtitlesformat')
 274         if  isinstance(sub_lang_list,tuple): #There was some error, it didn't get the available subtitles
 275             return [(sub_lang_list[0], None, None)]
 276         if self._downloader.params.get('subtitleslang', False):
 277             sub_lang = self._downloader.params.get('subtitleslang')
 278         elif 'en' in sub_lang_list:
 279             sub_lang = 'en'
 280         else:
 281             sub_lang = list(sub_lang_list.keys())[0]
 282         if not sub_lang in sub_lang_list:
 283             return [(u'no closed captions found in the specified language "%s"' % sub_lang, None, None)]
 284
 285         subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format)
 286         return [subtitle]
 287
 288     def _extract_all_subtitles(self, video_id):
 289         sub_lang_list = self._get_available_subtitles(video_id)
 290         sub_format = self._downloader.params.get('subtitlesformat')
 291         if  isinstance(sub_lang_list,tuple): #There was some error, it didn't get the available subtitles
 292             return [(sub_lang_list[0], None, None)]
 293         subtitles = []
 294         for sub_lang in sub_lang_list:
 295             subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format)
 296             subtitles.append(subtitle)
 297         return subtitles
 298
 299     def _print_formats(self, formats):
 300         print('Available formats:')
 301         for x in formats:
 302             print('%s\t:\t%s\t[%s]' %(x, self._video_extensions.get(x, 'flv'), self._video_dimensions.get(x, '???')))
 303
 304     def _real_initialize(self):
 305         if self._downloader is None:
 306             return
 307
 308         # Set language
 309         request = compat_urllib_request.Request(self._LANG_URL)
 310         try:
 311             self.report_lang()
 312             compat_urllib_request.urlopen(request).read()
 313         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 314             self._downloader.report_warning(u'unable to set language: %s' % compat_str(err))
 315             return
 316
 317         (username, password) = self._get_login_info()
 318
 319         # No authentication to be performed
 320         if username is None:
 321             return
 322
 323         request = compat_urllib_request.Request(self._LOGIN_URL)
 324         try:
 325             login_page = compat_urllib_request.urlopen(request).read().decode('utf-8')
 326         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 327             self._downloader.report_warning(u'unable to fetch login page: %s' % compat_str(err))
 328             return
 329
 330         galx = None
 331         dsh = None
 332         match = re.search(re.compile(r'<input.+?name="GALX".+?value="(.+?)"', re.DOTALL), login_page)
 333         if match:
 334           galx = match.group(1)
 335
 336         match = re.search(re.compile(r'<input.+?name="dsh".+?value="(.+?)"', re.DOTALL), login_page)
 337         if match:
 338           dsh = match.group(1)
 339
 340         # Log in
 341         login_form_strs = {
 342                 u'continue': u'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1',
 343                 u'Email': username,
 344                 u'GALX': galx,
 345                 u'Passwd': password,
 346                 u'PersistentCookie': u'yes',
 347                 u'_utf8': u'霱',
 348                 u'bgresponse': u'js_disabled',
 349                 u'checkConnection': u'',
 350                 u'checkedDomains': u'youtube',
 351                 u'dnConn': u'',
 352                 u'dsh': dsh,
 353                 u'pstMsg': u'0',
 354                 u'rmShown': u'1',
 355                 u'secTok': u'',
 356                 u'signIn': u'Sign in',
 357                 u'timeStmp': u'',
 358                 u'service': u'youtube',
 359                 u'uilel': u'3',
 360                 u'hl': u'en_US',
 361         }
 362         # Convert to UTF-8 *before* urlencode because Python 2.x's urlencode
 363         # chokes on unicode
 364         login_form = dict((k.encode('utf-8'), v.encode('utf-8')) for k,v in login_form_strs.items())
 365         login_data = compat_urllib_parse.urlencode(login_form).encode('ascii')
 366         request = compat_urllib_request.Request(self._LOGIN_URL, login_data)
 367         try:
 368             self.report_login()
 369             login_results = compat_urllib_request.urlopen(request).read().decode('utf-8')
 370             if re.search(r'(?i)<form[^>]* id="gaia_loginform"', login_results) is not None:
 371                 self._downloader.report_warning(u'unable to log in: bad username or password')
 372                 return
 373         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 374             self._downloader.report_warning(u'unable to log in: %s' % compat_str(err))
 375             return
 376
 377         # Confirm age
 378         age_form = {
 379                 'next_url':     '/',
 380                 'action_confirm':   'Confirm',
 381                 }
 382         request = compat_urllib_request.Request(self._AGE_URL, compat_urllib_parse.urlencode(age_form))
 383         try:
 384             self.report_age_confirmation()
 385             compat_urllib_request.urlopen(request).read().decode('utf-8')
 386         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 387             raise ExtractorError(u'Unable to confirm age: %s' % compat_str(err))
 388
 389     def _extract_id(self, url):
 390         mobj = re.match(self._VALID_URL, url, re.VERBOSE)
 391         if mobj is None:
 392             raise ExtractorError(u'Invalid URL: %s' % url)
 393         video_id = mobj.group(2)
 394         return video_id
 395
 396     def _real_extract(self, url):
 397         if re.match(r'(?:https?://)?[^/]+/watch\?feature=[a-z_]+$', url):
 398             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  ).')
 399
 400         # Extract original video URL from URL with redirection, like age verification, using next_url parameter
 401         mobj = re.search(self._NEXT_URL_RE, url)
 402         if mobj:
 403             url = 'https://www.youtube.com/' + compat_urllib_parse.unquote(mobj.group(1)).lstrip('/')
 404         video_id = self._extract_id(url)
 405
 406         # Get video webpage
 407         self.report_video_webpage_download(video_id)
 408         url = 'https://www.youtube.com/watch?v=%s&gl=US&hl=en&has_verified=1' % video_id
 409         request = compat_urllib_request.Request(url)
 410         try:
 411             video_webpage_bytes = compat_urllib_request.urlopen(request).read()
 412         except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 413             raise ExtractorError(u'Unable to download video webpage: %s' % compat_str(err))
 414
 415         video_webpage = video_webpage_bytes.decode('utf-8', 'ignore')
 416
 417         # Attempt to extract SWF player URL
 418         mobj = re.search(r'swfConfig.*?"(http:\\/\\/.*?watch.*?-.*?\.swf)"', video_webpage)
 419         if mobj is not None:
 420             player_url = re.sub(r'\\(.)', r'\1', mobj.group(1))
 421         else:
 422             player_url = None
 423
 424         # Get video info
 425         self.report_video_info_webpage_download(video_id)
 426         if re.search(r'player-age-gate-content">', video_webpage) is not None:
 427             self.report_age_confirmation()
 428             age_gate = True
 429             # We simulate the access to the video from www.youtube.com/v/{video_id}
 430             # this can be viewed without login into Youtube
 431             data = compat_urllib_parse.urlencode({'video_id': video_id,
 432                                                   'el': 'embedded',
 433                                                   'gl': 'US',
 434                                                   'hl': 'en',
 435                                                   'eurl': 'https://youtube.googleapis.com/v/' + video_id,
 436                                                   'asv': 3,
 437                                                   'sts':'1588',
 438                                                   })
 439             video_info_url = 'https://www.youtube.com/get_video_info?' + data
 440             video_info_webpage = self._download_webpage(video_info_url, video_id,
 441                                     note=False,
 442                                     errnote='unable to download video info webpage')
 443             video_info = compat_parse_qs(video_info_webpage)
 444         else:
 445             age_gate = False
 446             for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']:
 447                 video_info_url = ('https://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
 448                         % (video_id, el_type))
 449                 video_info_webpage = self._download_webpage(video_info_url, video_id,
 450                                         note=False,
 451                                         errnote='unable to download video info webpage')
 452                 video_info = compat_parse_qs(video_info_webpage)
 453                 if 'token' in video_info:
 454                     break
 455         if 'token' not in video_info:
 456             if 'reason' in video_info:
 457                 raise ExtractorError(u'YouTube said: %s' % video_info['reason'][0], expected=True)
 458             else:
 459                 raise ExtractorError(u'"token" parameter not in video info for unknown reason')
 460
 461         # Check for "rental" videos
 462         if 'ypc_video_rental_bar_text' in video_info and 'author' not in video_info:
 463             raise ExtractorError(u'"rental" videos not supported')
 464
 465         # Start extracting information
 466         self.report_information_extraction(video_id)
 467
 468         # uploader
 469         if 'author' not in video_info:
 470             raise ExtractorError(u'Unable to extract uploader name')
 471         video_uploader = compat_urllib_parse.unquote_plus(video_info['author'][0])
 472
 473         # uploader_id
 474         video_uploader_id = None
 475         mobj = re.search(r'<link itemprop="url" href="http://www.youtube.com/(?:user|channel)/([^"]+)">', video_webpage)
 476         if mobj is not None:
 477             video_uploader_id = mobj.group(1)
 478         else:
 479             self._downloader.report_warning(u'unable to extract uploader nickname')
 480
 481         # title
 482         if 'title' not in video_info:
 483             raise ExtractorError(u'Unable to extract video title')
 484         video_title = compat_urllib_parse.unquote_plus(video_info['title'][0])
 485
 486         # thumbnail image
 487         # We try first to get a high quality image:
 488         m_thumb = re.search(r'<span itemprop="thumbnail".*?href="(.*?)">',
 489                             video_webpage, re.DOTALL)
 490         if m_thumb is not None:
 491             video_thumbnail = m_thumb.group(1)
 492         elif 'thumbnail_url' not in video_info:
 493             self._downloader.report_warning(u'unable to extract video thumbnail')
 494             video_thumbnail = ''
 495         else:   # don't panic if we can't find it
 496             video_thumbnail = compat_urllib_parse.unquote_plus(video_info['thumbnail_url'][0])
 497
 498         # upload date
 499         upload_date = None
 500         mobj = re.search(r'id="eow-date.*?>(.*?)</span>', video_webpage, re.DOTALL)
 501         if mobj is not None:
 502             upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
 503             upload_date = unified_strdate(upload_date)
 504
 505         # description
 506         video_description = get_element_by_id("eow-description", video_webpage)
 507         if video_description:
 508             video_description = clean_html(video_description)
 509         else:
 510             fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage)
 511             if fd_mobj:
 512                 video_description = unescapeHTML(fd_mobj.group(1))
 513             else:
 514                 video_description = u''
 515
 516         # subtitles
 517         video_subtitles = None
 518
 519         if self._downloader.params.get('writesubtitles', False):
 520             video_subtitles = self._extract_subtitle(video_id)
 521             if video_subtitles:
 522                 (sub_error, sub_lang, sub) = video_subtitles[0]
 523                 if sub_error:
 524                     self._downloader.report_warning(sub_error)
 525
 526         if self._downloader.params.get('writeautomaticsub', False):
 527             video_subtitles = self._request_automatic_caption(video_id, video_webpage)
 528             (sub_error, sub_lang, sub) = video_subtitles[0]
 529             if sub_error:
 530                 self._downloader.report_warning(sub_error)
 531
 532         if self._downloader.params.get('allsubtitles', False):
 533             video_subtitles = self._extract_all_subtitles(video_id)
 534             for video_subtitle in video_subtitles:
 535                 (sub_error, sub_lang, sub) = video_subtitle
 536                 if sub_error:
 537                     self._downloader.report_warning(sub_error)
 538
 539         if self._downloader.params.get('listsubtitles', False):
 540             self._list_available_subtitles(video_id)
 541             return
 542
 543         if 'length_seconds' not in video_info:
 544             self._downloader.report_warning(u'unable to extract video duration')
 545             video_duration = ''
 546         else:
 547             video_duration = compat_urllib_parse.unquote_plus(video_info['length_seconds'][0])
 548
 549         # Decide which formats to download
 550         req_format = self._downloader.params.get('format', None)
 551
 552         try:
 553             mobj = re.search(r';ytplayer.config = ({.*?});', video_webpage)
 554             if not mobj:
 555                 raise ValueError('Could not find vevo ID')
 556             info = json.loads(mobj.group(1))
 557             args = info['args']
 558             # Easy way to know if the 's' value is in url_encoded_fmt_stream_map
 559             # this signatures are encrypted
 560             m_s = re.search(r'[&,]s=', args['url_encoded_fmt_stream_map'])
 561             if m_s is not None:
 562                 self.to_screen(u'%s: Encrypted signatures detected.' % video_id)
 563                 video_info['url_encoded_fmt_stream_map'] = [args['url_encoded_fmt_stream_map']]
 564         except ValueError:
 565             pass
 566
 567         if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
 568             self.report_rtmp_download()
 569             video_url_list = [(None, video_info['conn'][0])]
 570         elif 'url_encoded_fmt_stream_map' in video_info and len(video_info['url_encoded_fmt_stream_map']) >= 1:
 571             if 'rtmpe%3Dyes' in video_info['url_encoded_fmt_stream_map'][0]:
 572                 raise ExtractorError('rtmpe downloads are not supported, see https://github.com/rg3/youtube-dl/issues/343 for more information.', expected=True)
 573             url_map = {}
 574             for url_data_str in video_info['url_encoded_fmt_stream_map'][0].split(','):
 575                 url_data = compat_parse_qs(url_data_str)
 576                 if 'itag' in url_data and 'url' in url_data:
 577                     url = url_data['url'][0]
 578                     if 'sig' in url_data:
 579                         url += '&signature=' + url_data['sig'][0]
 580                     elif 's' in url_data:
 581                         if self._downloader.params.get('verbose'):
 582                             s = url_data['s'][0]
 583                             if age_gate:
 584                                 player_version = self._search_regex(r'ad3-(.+?)\.swf',
 585                                     video_info['ad3_module'][0], 'flash player',
 586                                     fatal=False)
 587                                 player = 'flash player %s' % player_version
 588                             else:
 589                                 player = u'html5 player %s' % self._search_regex(r'html5player-(.+?)\.js', video_webpage,
 590                                     'html5 player', fatal=False)
 591                             self.to_screen('encrypted signature length %d (%d.%d), itag %s, %s' %
 592                                 (len(s), len(s.split('.')[0]), len(s.split('.')[1]), url_data['itag'][0], player))
 593                         signature = self._decrypt_signature(url_data['s'][0])
 594                         url += '&signature=' + signature
 595                     if 'ratebypass' not in url:
 596                         url += '&ratebypass=yes'
 597                     url_map[url_data['itag'][0]] = url
 598
 599             format_limit = self._downloader.params.get('format_limit', None)
 600             available_formats = self._available_formats_prefer_free if self._downloader.params.get('prefer_free_formats', False) else self._available_formats
 601             if format_limit is not None and format_limit in available_formats:
 602                 format_list = available_formats[available_formats.index(format_limit):]
 603             else:
 604                 format_list = available_formats
 605             existing_formats = [x for x in format_list if x in url_map]
 606             if len(existing_formats) == 0:
 607                 raise ExtractorError(u'no known formats available for video')
 608             if self._downloader.params.get('listformats', None):
 609                 self._print_formats(existing_formats)
 610                 return
 611             if req_format is None or req_format == 'best':
 612                 video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
 613             elif req_format == 'worst':
 614                 video_url_list = [(existing_formats[-1], url_map[existing_formats[-1]])] # worst quality
 615             elif req_format in ('-1', 'all'):
 616                 video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
 617             else:
 618                 # Specific formats. We pick the first in a slash-delimeted sequence.
 619                 # For example, if '1/2/3/4' is requested and '2' and '4' are available, we pick '2'.
 620                 req_formats = req_format.split('/')
 621                 video_url_list = None
 622                 for rf in req_formats:
 623                     if rf in url_map:
 624                         video_url_list = [(rf, url_map[rf])]
 625                         break
 626                 if video_url_list is None:
 627                     raise ExtractorError(u'requested format not available')
 628         else:
 629             raise ExtractorError(u'no conn or url_encoded_fmt_stream_map information found in video info')
 630
 631         results = []
 632         for format_param, video_real_url in video_url_list:
 633             # Extension
 634             video_extension = self._video_extensions.get(format_param, 'flv')
 635
 636             video_format = '{0} - {1}'.format(format_param if format_param else video_extension,
 637                                               self._video_dimensions.get(format_param, '???'))
 638
 639             results.append({
 640                 'id':       video_id,
 641                 'url':      video_real_url,
 642                 'uploader': video_uploader,
 643                 'uploader_id': video_uploader_id,
 644                 'upload_date':  upload_date,
 645                 'title':    video_title,
 646                 'ext':      video_extension,
 647                 'format':   video_format,
 648                 'thumbnail':    video_thumbnail,
 649                 'description':  video_description,
 650                 'player_url':   player_url,
 651                 'subtitles':    video_subtitles,
 652                 'duration':     video_duration
 653             })
 654         return results
 655
 656 class YoutubePlaylistIE(InfoExtractor):
 657     IE_DESC = u'YouTube.com playlists'
 658     _VALID_URL = r"""(?:
 659                         (?:https?://)?
 660                         (?:\w+\.)?
 661                         youtube\.com/
 662                         (?:
 663                            (?:course|view_play_list|my_playlists|artist|playlist|watch)
 664                            \? (?:.*?&)*? (?:p|a|list)=
 665                         |  p/
 666                         )
 667                         ((?:PL|EC|UU)?[0-9A-Za-z-_]{10,})
 668                         .*
 669                      |
 670                         ((?:PL|EC|UU)[0-9A-Za-z-_]{10,})
 671                      )"""
 672     _TEMPLATE_URL = 'https://gdata.youtube.com/feeds/api/playlists/%s?max-results=%i&start-index=%i&v=2&alt=json&safeSearch=none'
 673     _MAX_RESULTS = 50
 674     IE_NAME = u'youtube:playlist'
 675
 676     @classmethod
 677     def suitable(cls, url):
 678         """Receives a URL and returns True if suitable for this IE."""
 679         return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
 680
 681     def _real_extract(self, url):
 682         # Extract playlist id
 683         mobj = re.match(self._VALID_URL, url, re.VERBOSE)
 684         if mobj is None:
 685             raise ExtractorError(u'Invalid URL: %s' % url)
 686
 687         # Download playlist videos from API
 688         playlist_id = mobj.group(1) or mobj.group(2)
 689         page_num = 1
 690         videos = []
 691
 692         while True:
 693             url = self._TEMPLATE_URL % (playlist_id, self._MAX_RESULTS, self._MAX_RESULTS * (page_num - 1) + 1)
 694             page = self._download_webpage(url, playlist_id, u'Downloading page #%s' % page_num)
 695
 696             try:
 697                 response = json.loads(page)
 698             except ValueError as err:
 699                 raise ExtractorError(u'Invalid JSON in API response: ' + compat_str(err))
 700
 701             if 'feed' not in response:
 702                 raise ExtractorError(u'Got a malformed response from YouTube API')
 703             playlist_title = response['feed']['title']['$t']
 704             if 'entry' not in response['feed']:
 705                 # Number of videos is a multiple of self._MAX_RESULTS
 706                 break
 707
 708             for entry in response['feed']['entry']:
 709                 index = entry['yt$position']['$t']
 710                 if 'media$group' in entry and 'media$player' in entry['media$group']:
 711                     videos.append((index, entry['media$group']['media$player']['url']))
 712
 713             if len(response['feed']['entry']) < self._MAX_RESULTS:
 714                 break
 715             page_num += 1
 716
 717         videos = [v[1] for v in sorted(videos)]
 718
 719         url_results = [self.url_result(vurl, 'Youtube') for vurl in videos]
 720         return [self.playlist_result(url_results, playlist_id, playlist_title)]
 721
 722
 723 class YoutubeChannelIE(InfoExtractor):
 724     IE_DESC = u'YouTube.com channels'
 725     _VALID_URL = r"^(?:https?://)?(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/([0-9A-Za-z_-]+)"
 726     _TEMPLATE_URL = 'http://www.youtube.com/channel/%s/videos?sort=da&flow=list&view=0&page=%s&gl=US&hl=en'
 727     _MORE_PAGES_INDICATOR = 'yt-uix-load-more'
 728     _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'
 729     IE_NAME = u'youtube:channel'
 730
 731     def extract_videos_from_page(self, page):
 732         ids_in_page = []
 733         for mobj in re.finditer(r'href="/watch\?v=([0-9A-Za-z_-]+)&?', page):
 734             if mobj.group(1) not in ids_in_page:
 735                 ids_in_page.append(mobj.group(1))
 736         return ids_in_page
 737
 738     def _real_extract(self, url):
 739         # Extract channel id
 740         mobj = re.match(self._VALID_URL, url)
 741         if mobj is None:
 742             raise ExtractorError(u'Invalid URL: %s' % url)
 743
 744         # Download channel page
 745         channel_id = mobj.group(1)
 746         video_ids = []
 747         pagenum = 1
 748
 749         url = self._TEMPLATE_URL % (channel_id, pagenum)
 750         page = self._download_webpage(url, channel_id,
 751                                       u'Downloading page #%s' % pagenum)
 752
 753         # Extract video identifiers
 754         ids_in_page = self.extract_videos_from_page(page)
 755         video_ids.extend(ids_in_page)
 756
 757         # Download any subsequent channel pages using the json-based channel_ajax query
 758         if self._MORE_PAGES_INDICATOR in page:
 759             while True:
 760                 pagenum = pagenum + 1
 761
 762                 url = self._MORE_PAGES_URL % (pagenum, channel_id)
 763                 page = self._download_webpage(url, channel_id,
 764                                               u'Downloading page #%s' % pagenum)
 765
 766                 page = json.loads(page)
 767
 768                 ids_in_page = self.extract_videos_from_page(page['content_html'])
 769                 video_ids.extend(ids_in_page)
 770
 771                 if self._MORE_PAGES_INDICATOR  not in page['load_more_widget_html']:
 772                     break
 773
 774         self._downloader.to_screen(u'[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
 775
 776         urls = ['http://www.youtube.com/watch?v=%s' % id for id in video_ids]
 777         url_entries = [self.url_result(eurl, 'Youtube') for eurl in urls]
 778         return [self.playlist_result(url_entries, channel_id)]
 779
 780
 781 class YoutubeUserIE(InfoExtractor):
 782     IE_DESC = u'YouTube.com user videos (URL or "ytuser" keyword)'
 783     _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/user/)|ytuser:)([A-Za-z0-9_-]+)'
 784     _TEMPLATE_URL = 'http://gdata.youtube.com/feeds/api/users/%s'
 785     _GDATA_PAGE_SIZE = 50
 786     _GDATA_URL = 'http://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d'
 787     _VIDEO_INDICATOR = r'/watch\?v=(.+?)[\<&]'
 788     IE_NAME = u'youtube:user'
 789
 790     def _real_extract(self, url):
 791         # Extract username
 792         mobj = re.match(self._VALID_URL, url)
 793         if mobj is None:
 794             raise ExtractorError(u'Invalid URL: %s' % url)
 795
 796         username = mobj.group(1)
 797
 798         # Download video ids using YouTube Data API. Result size per
 799         # query is limited (currently to 50 videos) so we need to query
 800         # page by page until there are no video ids - it means we got
 801         # all of them.
 802
 803         video_ids = []
 804         pagenum = 0
 805
 806         while True:
 807             start_index = pagenum * self._GDATA_PAGE_SIZE + 1
 808
 809             gdata_url = self._GDATA_URL % (username, self._GDATA_PAGE_SIZE, start_index)
 810             page = self._download_webpage(gdata_url, username,
 811                                           u'Downloading video ids from %d to %d' % (start_index, start_index + self._GDATA_PAGE_SIZE))
 812
 813             # Extract video identifiers
 814             ids_in_page = []
 815
 816             for mobj in re.finditer(self._VIDEO_INDICATOR, page):
 817                 if mobj.group(1) not in ids_in_page:
 818                     ids_in_page.append(mobj.group(1))
 819
 820             video_ids.extend(ids_in_page)
 821
 822             # A little optimization - if current page is not
 823             # "full", ie. does not contain PAGE_SIZE video ids then
 824             # we can assume that this page is the last one - there
 825             # are no more ids on further pages - no need to query
 826             # again.
 827
 828             if len(ids_in_page) < self._GDATA_PAGE_SIZE:
 829                 break
 830
 831             pagenum += 1
 832
 833         urls = ['http://www.youtube.com/watch?v=%s' % video_id for video_id in video_ids]
 834         url_results = [self.url_result(rurl, 'Youtube') for rurl in urls]
 835         return [self.playlist_result(url_results, playlist_title = username)]
 836
 837 class YoutubeSearchIE(SearchInfoExtractor):
 838     IE_DESC = u'YouTube.com searches'
 839     _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc'
 840     _MAX_RESULTS = 1000
 841     IE_NAME = u'youtube:search'
 842     _SEARCH_KEY = 'ytsearch'
 843
 844     def report_download_page(self, query, pagenum):
 845         """Report attempt to download search page with given number."""
 846         self._downloader.to_screen(u'[youtube] query "%s": Downloading page %s' % (query, pagenum))
 847
 848     def _get_n_results(self, query, n):
 849         """Get a specified number of results for a query"""
 850
 851         video_ids = []
 852         pagenum = 0
 853         limit = n
 854
 855         while (50 * pagenum) < limit:
 856             self.report_download_page(query, pagenum+1)
 857             result_url = self._API_URL % (compat_urllib_parse.quote_plus(query), (50*pagenum)+1)
 858             request = compat_urllib_request.Request(result_url)
 859             try:
 860                 data = compat_urllib_request.urlopen(request).read().decode('utf-8')
 861             except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
 862                 raise ExtractorError(u'Unable to download API page: %s' % compat_str(err))
 863             api_response = json.loads(data)['data']
 864
 865             if not 'items' in api_response:
 866                 raise ExtractorError(u'[youtube] No video results')
 867
 868             new_ids = list(video['id'] for video in api_response['items'])
 869             video_ids += new_ids
 870
 871             limit = min(n, api_response['totalItems'])
 872             pagenum += 1
 873
 874         if len(video_ids) > n:
 875             video_ids = video_ids[:n]
 876         videos = [self.url_result('http://www.youtube.com/watch?v=%s' % id, 'Youtube') for id in video_ids]
 877         return self.playlist_result(videos, query)
 878
 879
 880 class YoutubeShowIE(InfoExtractor):
 881     IE_DESC = u'YouTube.com (multi-season) shows'
 882     _VALID_URL = r'https?://www\.youtube\.com/show/(.*)'
 883     IE_NAME = u'youtube:show'
 884
 885     def _real_extract(self, url):
 886         mobj = re.match(self._VALID_URL, url)
 887         show_name = mobj.group(1)
 888         webpage = self._download_webpage(url, show_name, u'Downloading show webpage')
 889         # There's one playlist for each season of the show
 890         m_seasons = list(re.finditer(r'href="(/playlist\?list=.*?)"', webpage))
 891         self.to_screen(u'%s: Found %s seasons' % (show_name, len(m_seasons)))
 892         return [self.url_result('https://www.youtube.com' + season.group(1), 'YoutubePlaylist') for season in m_seasons]
 893
 894
 895 class YoutubeSubscriptionsIE(YoutubeIE):
 896     """It's a subclass of YoutubeIE because we need to login"""
 897     IE_DESC = u'YouTube.com subscriptions feed, "ytsubs" keyword(requires authentication)'
 898     _VALID_URL = r'https?://www\.youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
 899     IE_NAME = u'youtube:subscriptions'
 900     _FEED_TEMPLATE = 'http://www.youtube.com/feed_ajax?action_load_system_feed=1&feed_name=subscriptions&paging=%s'
 901     _PAGING_STEP = 30
 902
 903     # Overwrite YoutubeIE properties we don't want
 904     _TESTS = []
 905     @classmethod
 906     def suitable(cls, url):
 907         return re.match(cls._VALID_URL, url) is not None
 908
 909     def _real_initialize(self):
 910         (username, password) = self._get_login_info()
 911         if username is None:
 912             raise ExtractorError(u'No login info available, needed for downloading the Youtube subscriptions.', expected=True)
 913         super(YoutubeSubscriptionsIE, self)._real_initialize()
 914
 915     def _real_extract(self, url):
 916         feed_entries = []
 917         # The step argument is available only in 2.7 or higher
 918         for i in itertools.count(0):
 919             paging = i*self._PAGING_STEP
 920             info = self._download_webpage(self._FEED_TEMPLATE % paging, 'feed',
 921                                           u'Downloading page %s' % i)
 922             info = json.loads(info)
 923             feed_html = info['feed_html']
 924             m_ids = re.finditer(r'"/watch\?v=(.*?)"', feed_html)
 925             ids = orderedSet(m.group(1) for m in m_ids)
 926             feed_entries.extend(self.url_result(id, 'Youtube') for id in ids)
 927             if info['paging'] is None:
 928                 break
 929         return self.playlist_result(feed_entries, playlist_title='Youtube Subscriptions')