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

   1 # coding: utf-8
   2
   3 import collections
   4 import errno
   5 import io
   6 import itertools
   7 import json
   8 import os.path
   9 import re
  10 import string
  11 import struct
  12 import traceback
  13 import zlib
  14
  15 from .common import InfoExtractor, SearchInfoExtractor
  16 from .subtitles import SubtitlesInfoExtractor
  17 from ..utils import (
  18     compat_chr,
  19     compat_parse_qs,
  20     compat_urllib_parse,
  21     compat_urllib_request,
  22     compat_urlparse,
  23     compat_str,
  24
  25     clean_html,
  26     get_cachedir,
  27     get_element_by_id,
  28     get_element_by_attribute,
  29     ExtractorError,
  30     int_or_none,
  31     PagedList,
  32     RegexNotFoundError,
  33     unescapeHTML,
  34     unified_strdate,
  35     orderedSet,
  36     write_json_file,
  37 )
  38
  39 class YoutubeBaseInfoExtractor(InfoExtractor):
  40     """Provide base functions for Youtube extractors"""
  41     _LOGIN_URL = 'https://accounts.google.com/ServiceLogin'
  42     _LANG_URL = r'https://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1'
  43     _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'
  44     _NETRC_MACHINE = 'youtube'
  45     # If True it will raise an error if no login info is provided
  46     _LOGIN_REQUIRED = False
  47
  48     def _set_language(self):
  49         return bool(self._download_webpage(
  50             self._LANG_URL, None,
  51             note=u'Setting language', errnote='unable to set language',
  52             fatal=False))
  53
  54     def _login(self):
  55         (username, password) = self._get_login_info()
  56         # No authentication to be performed
  57         if username is None:
  58             if self._LOGIN_REQUIRED:
  59                 raise ExtractorError(u'No login info available, needed for using %s.' % self.IE_NAME, expected=True)
  60             return False
  61
  62         login_page = self._download_webpage(
  63             self._LOGIN_URL, None,
  64             note=u'Downloading login page',
  65             errnote=u'unable to fetch login page', fatal=False)
  66         if login_page is False:
  67             return
  68
  69         galx = self._search_regex(r'(?s)<input.+?name="GALX".+?value="(.+?)"',
  70                                   login_page, u'Login GALX parameter')
  71
  72         # Log in
  73         login_form_strs = {
  74                 u'continue': u'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1',
  75                 u'Email': username,
  76                 u'GALX': galx,
  77                 u'Passwd': password,
  78                 u'PersistentCookie': u'yes',
  79                 u'_utf8': u'霱',
  80                 u'bgresponse': u'js_disabled',
  81                 u'checkConnection': u'',
  82                 u'checkedDomains': u'youtube',
  83                 u'dnConn': u'',
  84                 u'pstMsg': u'0',
  85                 u'rmShown': u'1',
  86                 u'secTok': u'',
  87                 u'signIn': u'Sign in',
  88                 u'timeStmp': u'',
  89                 u'service': u'youtube',
  90                 u'uilel': u'3',
  91                 u'hl': u'en_US',
  92         }
  93         # Convert to UTF-8 *before* urlencode because Python 2.x's urlencode
  94         # chokes on unicode
  95         login_form = dict((k.encode('utf-8'), v.encode('utf-8')) for k,v in login_form_strs.items())
  96         login_data = compat_urllib_parse.urlencode(login_form).encode('ascii')
  97
  98         req = compat_urllib_request.Request(self._LOGIN_URL, login_data)
  99         login_results = self._download_webpage(
 100             req, None,
 101             note=u'Logging in', errnote=u'unable to log in', fatal=False)
 102         if login_results is False:
 103             return False
 104         if re.search(r'(?i)<form[^>]* id="gaia_loginform"', login_results) is not None:
 105             self._downloader.report_warning(u'unable to log in: bad username or password')
 106             return False
 107         return True
 108
 109     def _confirm_age(self):
 110         age_form = {
 111             'next_url': '/',
 112             'action_confirm': 'Confirm',
 113         }
 114         req = compat_urllib_request.Request(self._AGE_URL, compat_urllib_parse.urlencode(age_form))
 115
 116         self._download_webpage(
 117             req, None,
 118             note=u'Confirming age', errnote=u'Unable to confirm age')
 119         return True
 120
 121     def _real_initialize(self):
 122         if self._downloader is None:
 123             return
 124         if not self._set_language():
 125             return
 126         if not self._login():
 127             return
 128         self._confirm_age()
 129
 130
 131 class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
 132     IE_DESC = u'YouTube.com'
 133     _VALID_URL = r"""(?x)^
 134                      (
 135                          (?:https?://|//)?                                    # http(s):// or protocol-independent URL (optional)
 136                          (?:(?:(?:(?:\w+\.)?[yY][oO][uU][tT][uU][bB][eE](?:-nocookie)?\.com/|
 137                             (?:www\.)?deturl\.com/www\.youtube\.com/|
 138                             (?:www\.)?pwnyoutube\.com|
 139                             tube\.majestyc\.net/|
 140                             youtube\.googleapis\.com/)                        # the various hostnames, with wildcard subdomains
 141                          (?:.*?\#/)?                                          # handle anchor (#/) redirect urls
 142                          (?:                                                  # the various things that can precede the ID:
 143                              (?:(?:v|embed|e)/)                               # v/ or embed/ or e/
 144                              |(?:                                             # or the v= param in all its forms
 145                                  (?:(?:watch|movie)(?:_popup)?(?:\.php)?)?    # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
 146                                  (?:\?|\#!?)                                  # the params delimiter ? or # or #!
 147                                  (?:.*?&)?                                    # any other preceding param (like /?s=tuff&v=xxxx)
 148                                  v=
 149                              )
 150                          ))
 151                          |youtu\.be/                                          # just youtu.be/xxxx
 152                          )
 153                      )?                                                       # all until now is optional -> you can pass the naked ID
 154                      ([0-9A-Za-z_-]{11})                                      # here is it! the YouTube video ID
 155                      (?(1).+)?                                                # if we found the ID, everything can follow
 156                      $"""
 157     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
 158     _formats = {
 159         '5': {'ext': 'flv', 'width': 400, 'height': 240},
 160         '6': {'ext': 'flv', 'width': 450, 'height': 270},
 161         '13': {'ext': '3gp'},
 162         '17': {'ext': '3gp', 'width': 176, 'height': 144},
 163         '18': {'ext': 'mp4', 'width': 640, 'height': 360},
 164         '22': {'ext': 'mp4', 'width': 1280, 'height': 720},
 165         '34': {'ext': 'flv', 'width': 640, 'height': 360},
 166         '35': {'ext': 'flv', 'width': 854, 'height': 480},
 167         '36': {'ext': '3gp', 'width': 320, 'height': 240},
 168         '37': {'ext': 'mp4', 'width': 1920, 'height': 1080},
 169         '38': {'ext': 'mp4', 'width': 4096, 'height': 3072},
 170         '43': {'ext': 'webm', 'width': 640, 'height': 360},
 171         '44': {'ext': 'webm', 'width': 854, 'height': 480},
 172         '45': {'ext': 'webm', 'width': 1280, 'height': 720},
 173         '46': {'ext': 'webm', 'width': 1920, 'height': 1080},
 174
 175
 176         # 3d videos
 177         '82': {'ext': 'mp4', 'height': 360, 'resolution': '360p', 'format_note': '3D', 'preference': -20},
 178         '83': {'ext': 'mp4', 'height': 480, 'resolution': '480p', 'format_note': '3D', 'preference': -20},
 179         '84': {'ext': 'mp4', 'height': 720, 'resolution': '720p', 'format_note': '3D', 'preference': -20},
 180         '85': {'ext': 'mp4', 'height': 1080, 'resolution': '1080p', 'format_note': '3D', 'preference': -20},
 181         '100': {'ext': 'webm', 'height': 360, 'resolution': '360p', 'format_note': '3D', 'preference': -20},
 182         '101': {'ext': 'webm', 'height': 480, 'resolution': '480p', 'format_note': '3D', 'preference': -20},
 183         '102': {'ext': 'webm', 'height': 720, 'resolution': '720p', 'format_note': '3D', 'preference': -20},
 184
 185         # Apple HTTP Live Streaming
 186         '92': {'ext': 'mp4', 'height': 240, 'resolution': '240p', 'format_note': 'HLS', 'preference': -10},
 187         '93': {'ext': 'mp4', 'height': 360, 'resolution': '360p', 'format_note': 'HLS', 'preference': -10},
 188         '94': {'ext': 'mp4', 'height': 480, 'resolution': '480p', 'format_note': 'HLS', 'preference': -10},
 189         '95': {'ext': 'mp4', 'height': 720, 'resolution': '720p', 'format_note': 'HLS', 'preference': -10},
 190         '96': {'ext': 'mp4', 'height': 1080, 'resolution': '1080p', 'format_note': 'HLS', 'preference': -10},
 191         '132': {'ext': 'mp4', 'height': 240, 'resolution': '240p', 'format_note': 'HLS', 'preference': -10},
 192         '151': {'ext': 'mp4', 'height': 72, 'resolution': '72p', 'format_note': 'HLS', 'preference': -10},
 193
 194         # DASH mp4 video
 195         '133': {'ext': 'mp4', 'height': 240, 'resolution': '240p', 'format_note': 'DASH video', 'preference': -40},
 196         '134': {'ext': 'mp4', 'height': 360, 'resolution': '360p', 'format_note': 'DASH video', 'preference': -40},
 197         '135': {'ext': 'mp4', 'height': 480, 'resolution': '480p', 'format_note': 'DASH video', 'preference': -40},
 198         '136': {'ext': 'mp4', 'height': 720, 'resolution': '720p', 'format_note': 'DASH video', 'preference': -40},
 199         '137': {'ext': 'mp4', 'height': 1080, 'resolution': '1080p', 'format_note': 'DASH video', 'preference': -40},
 200         '138': {'ext': 'mp4', 'height': 1081, 'resolution': '>1080p', 'format_note': 'DASH video', 'preference': -40},
 201         '160': {'ext': 'mp4', 'height': 192, 'resolution': '192p', 'format_note': 'DASH video', 'preference': -40},
 202         '264': {'ext': 'mp4', 'height': 1080, 'resolution': '1080p', 'format_note': 'DASH video', 'preference': -40},
 203
 204         # Dash mp4 audio
 205         '139': {'ext': 'm4a', 'format_note': 'DASH audio', 'vcodec': 'none', 'abr': 48, 'preference': -50},
 206         '140': {'ext': 'm4a', 'format_note': 'DASH audio', 'vcodec': 'none', 'abr': 128, 'preference': -50},
 207         '141': {'ext': 'm4a', 'format_note': 'DASH audio', 'vcodec': 'none', 'abr': 256, 'preference': -50},
 208
 209         # Dash webm
 210         '167': {'ext': 'webm', 'height': 360, 'width': 640, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'VP8', 'acodec': 'none', 'preference': -40},
 211         '168': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'VP8', 'acodec': 'none', 'preference': -40},
 212         '169': {'ext': 'webm', 'height': 720, 'width': 1280, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'VP8', 'acodec': 'none', 'preference': -40},
 213         '170': {'ext': 'webm', 'height': 1080, 'width': 1920, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'VP8', 'acodec': 'none', 'preference': -40},
 214         '218': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'VP8', 'acodec': 'none', 'preference': -40},
 215         '219': {'ext': 'webm', 'height': 480, 'width': 854, 'format_note': 'DASH video', 'container': 'webm', 'vcodec': 'VP8', 'acodec': 'none', 'preference': -40},
 216         '242': {'ext': 'webm', 'height': 240, 'resolution': '240p', 'format_note': 'DASH webm', 'preference': -40},
 217         '243': {'ext': 'webm', 'height': 360, 'resolution': '360p', 'format_note': 'DASH webm', 'preference': -40},
 218         '244': {'ext': 'webm', 'height': 480, 'resolution': '480p', 'format_note': 'DASH webm', 'preference': -40},
 219         '245': {'ext': 'webm', 'height': 480, 'resolution': '480p', 'format_note': 'DASH webm', 'preference': -40},
 220         '246': {'ext': 'webm', 'height': 480, 'resolution': '480p', 'format_note': 'DASH webm', 'preference': -40},
 221         '247': {'ext': 'webm', 'height': 720, 'resolution': '720p', 'format_note': 'DASH webm', 'preference': -40},
 222         '248': {'ext': 'webm', 'height': 1080, 'resolution': '1080p', 'format_note': 'DASH webm', 'preference': -40},
 223
 224         # Dash webm audio
 225         '171': {'ext': 'webm', 'vcodec': 'none', 'format_note': 'DASH webm audio', 'abr': 48, 'preference': -50},
 226         '172': {'ext': 'webm', 'vcodec': 'none', 'format_note': 'DASH webm audio', 'abr': 256, 'preference': -50},
 227
 228         # RTMP (unnamed)
 229         '_rtmp': {'protocol': 'rtmp'},
 230     }
 231
 232     IE_NAME = u'youtube'
 233     _TESTS = [
 234         {
 235             u"url":  u"http://www.youtube.com/watch?v=BaW_jenozKc",
 236             u"file":  u"BaW_jenozKc.mp4",
 237             u"info_dict": {
 238                 u"title": u"youtube-dl test video \"'/\\ä↭𝕐",
 239                 u"uploader": u"Philipp Hagemeister",
 240                 u"uploader_id": u"phihag",
 241                 u"upload_date": u"20121002",
 242                 u"description": u"test chars:  \"'/\\ä↭𝕐\ntest URL: https://github.com/rg3/youtube-dl/issues/1892\n\nThis is a test video for youtube-dl.\n\nFor more information, contact phihag@phihag.de ."
 243             }
 244         },
 245         {
 246             u"url":  u"http://www.youtube.com/watch?v=UxxajLWwzqY",
 247             u"file":  u"UxxajLWwzqY.mp4",
 248             u"note": u"Test generic use_cipher_signature video (#897)",
 249             u"info_dict": {
 250                 u"upload_date": u"20120506",
 251                 u"title": u"Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]",
 252                 u"description": u"md5:5b292926389560516e384ac437c0ec07",
 253                 u"uploader": u"Icona Pop",
 254                 u"uploader_id": u"IconaPop"
 255             }
 256         },
 257         {
 258             u"url":  u"https://www.youtube.com/watch?v=07FYdnEawAQ",
 259             u"file":  u"07FYdnEawAQ.mp4",
 260             u"note": u"Test VEVO video with age protection (#956)",
 261             u"info_dict": {
 262                 u"upload_date": u"20130703",
 263                 u"title": u"Justin Timberlake - Tunnel Vision (Explicit)",
 264                 u"description": u"md5:64249768eec3bc4276236606ea996373",
 265                 u"uploader": u"justintimberlakeVEVO",
 266                 u"uploader_id": u"justintimberlakeVEVO"
 267             }
 268         },
 269         {
 270             u"url":  u"//www.YouTube.com/watch?v=yZIXLfi8CZQ",
 271             u"file":  u"yZIXLfi8CZQ.mp4",
 272             u"note": u"Embed-only video (#1746)",
 273             u"info_dict": {
 274                 u"upload_date": u"20120608",
 275                 u"title": u"Principal Sexually Assaults A Teacher - Episode 117 - 8th June 2012",
 276                 u"description": u"md5:09b78bd971f1e3e289601dfba15ca4f7",
 277                 u"uploader": u"SET India",
 278                 u"uploader_id": u"setindia"
 279             }
 280         },
 281         {
 282             u"url": u"http://www.youtube.com/watch?v=a9LDPn-MO4I",
 283             u"file": u"a9LDPn-MO4I.m4a",
 284             u"note": u"256k DASH audio (format 141) via DASH manifest",
 285             u"info_dict": {
 286                 u"upload_date": "20121002",
 287                 u"uploader_id": "8KVIDEO",
 288                 u"description": "No description available.",
 289                 u"uploader": "8KVIDEO",
 290                 u"title": "UHDTV TEST 8K VIDEO.mp4"
 291             },
 292             u"params": {
 293                 u"youtube_include_dash_manifest": True,
 294                 u"format": "141",
 295             },
 296         },
 297     ]
 298
 299
 300     @classmethod
 301     def suitable(cls, url):
 302         """Receives a URL and returns True if suitable for this IE."""
 303         if YoutubePlaylistIE.suitable(url): return False
 304         return re.match(cls._VALID_URL, url) is not None
 305
 306     def __init__(self, *args, **kwargs):
 307         super(YoutubeIE, self).__init__(*args, **kwargs)
 308         self._player_cache = {}
 309
 310     def report_video_info_webpage_download(self, video_id):
 311         """Report attempt to download video info webpage."""
 312         self.to_screen(u'%s: Downloading video info webpage' % video_id)
 313
 314     def report_information_extraction(self, video_id):
 315         """Report attempt to extract video information."""
 316         self.to_screen(u'%s: Extracting video information' % video_id)
 317
 318     def report_unavailable_format(self, video_id, format):
 319         """Report extracted video URL."""
 320         self.to_screen(u'%s: Format %s not available' % (video_id, format))
 321
 322     def report_rtmp_download(self):
 323         """Indicate the download will use the RTMP protocol."""
 324         self.to_screen(u'RTMP download detected')
 325
 326     def _extract_signature_function(self, video_id, player_url, slen):
 327         id_m = re.match(r'.*-(?P<id>[a-zA-Z0-9_-]+)\.(?P<ext>[a-z]+)$',
 328                         player_url)
 329         player_type = id_m.group('ext')
 330         player_id = id_m.group('id')
 331
 332         # Read from filesystem cache
 333         func_id = '%s_%s_%d' % (player_type, player_id, slen)
 334         assert os.path.basename(func_id) == func_id
 335         cache_dir = get_cachedir(self._downloader.params)
 336
 337         cache_enabled = cache_dir is not None
 338         if cache_enabled:
 339             cache_fn = os.path.join(os.path.expanduser(cache_dir),
 340                                     u'youtube-sigfuncs',
 341                                     func_id + '.json')
 342             try:
 343                 with io.open(cache_fn, 'r', encoding='utf-8') as cachef:
 344                     cache_spec = json.load(cachef)
 345                 return lambda s: u''.join(s[i] for i in cache_spec)
 346             except IOError:
 347                 pass  # No cache available
 348
 349         if player_type == 'js':
 350             code = self._download_webpage(
 351                 player_url, video_id,
 352                 note=u'Downloading %s player %s' % (player_type, player_id),
 353                 errnote=u'Download of %s failed' % player_url)
 354             res = self._parse_sig_js(code)
 355         elif player_type == 'swf':
 356             urlh = self._request_webpage(
 357                 player_url, video_id,
 358                 note=u'Downloading %s player %s' % (player_type, player_id),
 359                 errnote=u'Download of %s failed' % player_url)
 360             code = urlh.read()
 361             res = self._parse_sig_swf(code)
 362         else:
 363             assert False, 'Invalid player type %r' % player_type
 364
 365         if cache_enabled:
 366             try:
 367                 test_string = u''.join(map(compat_chr, range(slen)))
 368                 cache_res = res(test_string)
 369                 cache_spec = [ord(c) for c in cache_res]
 370                 try:
 371                     os.makedirs(os.path.dirname(cache_fn))
 372                 except OSError as ose:
 373                     if ose.errno != errno.EEXIST:
 374                         raise
 375                 write_json_file(cache_spec, cache_fn)
 376             except Exception:
 377                 tb = traceback.format_exc()
 378                 self._downloader.report_warning(
 379                     u'Writing cache to %r failed: %s' % (cache_fn, tb))
 380
 381         return res
 382
 383     def _print_sig_code(self, func, slen):
 384         def gen_sig_code(idxs):
 385             def _genslice(start, end, step):
 386                 starts = u'' if start == 0 else str(start)
 387                 ends = (u':%d' % (end+step)) if end + step >= 0 else u':'
 388                 steps = u'' if step == 1 else (u':%d' % step)
 389                 return u's[%s%s%s]' % (starts, ends, steps)
 390
 391             step = None
 392             start = '(Never used)'  # Quelch pyflakes warnings - start will be
 393                                     # set as soon as step is set
 394             for i, prev in zip(idxs[1:], idxs[:-1]):
 395                 if step is not None:
 396                     if i - prev == step:
 397                         continue
 398                     yield _genslice(start, prev, step)
 399                     step = None
 400                     continue
 401                 if i - prev in [-1, 1]:
 402                     step = i - prev
 403                     start = prev
 404                     continue
 405                 else:
 406                     yield u's[%d]' % prev
 407             if step is None:
 408                 yield u's[%d]' % i
 409             else:
 410                 yield _genslice(start, i, step)
 411
 412         test_string = u''.join(map(compat_chr, range(slen)))
 413         cache_res = func(test_string)
 414         cache_spec = [ord(c) for c in cache_res]
 415         expr_code = u' + '.join(gen_sig_code(cache_spec))
 416         code = u'if len(s) == %d:\n    return %s\n' % (slen, expr_code)
 417         self.to_screen(u'Extracted signature function:\n' + code)
 418
 419     def _parse_sig_js(self, jscode):
 420         funcname = self._search_regex(
 421             r'signature=([a-zA-Z]+)', jscode,
 422             u'Initial JS player signature function name')
 423
 424         functions = {}
 425
 426         def argidx(varname):
 427             return string.lowercase.index(varname)
 428
 429         def interpret_statement(stmt, local_vars, allow_recursion=20):
 430             if allow_recursion < 0:
 431                 raise ExtractorError(u'Recursion limit reached')
 432
 433             if stmt.startswith(u'var '):
 434                 stmt = stmt[len(u'var '):]
 435             ass_m = re.match(r'^(?P<out>[a-z]+)(?:\[(?P<index>[^\]]+)\])?' +
 436                              r'=(?P<expr>.*)$', stmt)
 437             if ass_m:
 438                 if ass_m.groupdict().get('index'):
 439                     def assign(val):
 440                         lvar = local_vars[ass_m.group('out')]
 441                         idx = interpret_expression(ass_m.group('index'),
 442                                                    local_vars, allow_recursion)
 443                         assert isinstance(idx, int)
 444                         lvar[idx] = val
 445                         return val
 446                     expr = ass_m.group('expr')
 447                 else:
 448                     def assign(val):
 449                         local_vars[ass_m.group('out')] = val
 450                         return val
 451                     expr = ass_m.group('expr')
 452             elif stmt.startswith(u'return '):
 453                 assign = lambda v: v
 454                 expr = stmt[len(u'return '):]
 455             else:
 456                 raise ExtractorError(
 457                     u'Cannot determine left side of statement in %r' % stmt)
 458
 459             v = interpret_expression(expr, local_vars, allow_recursion)
 460             return assign(v)
 461
 462         def interpret_expression(expr, local_vars, allow_recursion):
 463             if expr.isdigit():
 464                 return int(expr)
 465
 466             if expr.isalpha():
 467                 return local_vars[expr]
 468
 469             m = re.match(r'^(?P<in>[a-z]+)\.(?P<member>.*)$', expr)
 470             if m:
 471                 member = m.group('member')
 472                 val = local_vars[m.group('in')]
 473                 if member == 'split("")':
 474                     return list(val)
 475                 if member == 'join("")':
 476                     return u''.join(val)
 477                 if member == 'length':
 478                     return len(val)
 479                 if member == 'reverse()':
 480                     return val[::-1]
 481                 slice_m = re.match(r'slice\((?P<idx>.*)\)', member)
 482                 if slice_m:
 483                     idx = interpret_expression(
 484                         slice_m.group('idx'), local_vars, allow_recursion-1)
 485                     return val[idx:]
 486
 487             m = re.match(
 488                 r'^(?P<in>[a-z]+)\[(?P<idx>.+)\]$', expr)
 489             if m:
 490                 val = local_vars[m.group('in')]
 491                 idx = interpret_expression(m.group('idx'), local_vars,
 492                                            allow_recursion-1)
 493                 return val[idx]
 494
 495             m = re.match(r'^(?P<a>.+?)(?P<op>[%])(?P<b>.+?)$', expr)
 496             if m:
 497                 a = interpret_expression(m.group('a'),
 498                                          local_vars, allow_recursion)
 499                 b = interpret_expression(m.group('b'),
 500                                          local_vars, allow_recursion)
 501                 return a % b
 502
 503             m = re.match(
 504                 r'^(?P<func>[a-zA-Z]+)\((?P<args>[a-z0-9,]+)\)$', expr)
 505             if m:
 506                 fname = m.group('func')
 507                 if fname not in functions:
 508                     functions[fname] = extract_function(fname)
 509                 argvals = [int(v) if v.isdigit() else local_vars[v]
 510                            for v in m.group('args').split(',')]
 511                 return functions[fname](argvals)
 512             raise ExtractorError(u'Unsupported JS expression %r' % expr)
 513
 514         def extract_function(funcname):
 515             func_m = re.search(
 516                 r'function ' + re.escape(funcname) +
 517                 r'\((?P<args>[a-z,]+)\){(?P<code>[^}]+)}',
 518                 jscode)
 519             argnames = func_m.group('args').split(',')
 520
 521             def resf(args):
 522                 local_vars = dict(zip(argnames, args))
 523                 for stmt in func_m.group('code').split(';'):
 524                     res = interpret_statement(stmt, local_vars)
 525                 return res
 526             return resf
 527
 528         initial_function = extract_function(funcname)
 529         return lambda s: initial_function([s])
 530
 531     def _parse_sig_swf(self, file_contents):
 532         if file_contents[1:3] != b'WS':
 533             raise ExtractorError(
 534                 u'Not an SWF file; header is %r' % file_contents[:3])
 535         if file_contents[:1] == b'C':
 536             content = zlib.decompress(file_contents[8:])
 537         else:
 538             raise NotImplementedError(u'Unsupported compression format %r' %
 539                                       file_contents[:1])
 540
 541         def extract_tags(content):
 542             pos = 0
 543             while pos < len(content):
 544                 header16 = struct.unpack('<H', content[pos:pos+2])[0]
 545                 pos += 2
 546                 tag_code = header16 >> 6
 547                 tag_len = header16 & 0x3f
 548                 if tag_len == 0x3f:
 549                     tag_len = struct.unpack('<I', content[pos:pos+4])[0]
 550                     pos += 4
 551                 assert pos+tag_len <= len(content)
 552                 yield (tag_code, content[pos:pos+tag_len])
 553                 pos += tag_len
 554
 555         code_tag = next(tag
 556                         for tag_code, tag in extract_tags(content)
 557                         if tag_code == 82)
 558         p = code_tag.index(b'\0', 4) + 1
 559         code_reader = io.BytesIO(code_tag[p:])
 560
 561         # Parse ABC (AVM2 ByteCode)
 562         def read_int(reader=None):
 563             if reader is None:
 564                 reader = code_reader
 565             res = 0
 566             shift = 0
 567             for _ in range(5):
 568                 buf = reader.read(1)
 569                 assert len(buf) == 1
 570                 b = struct.unpack('<B', buf)[0]
 571                 res = res | ((b & 0x7f) << shift)
 572                 if b & 0x80 == 0:
 573                     break
 574                 shift += 7
 575             return res
 576
 577         def u30(reader=None):
 578             res = read_int(reader)
 579             assert res & 0xf0000000 == 0
 580             return res
 581         u32 = read_int
 582
 583         def s32(reader=None):
 584             v = read_int(reader)
 585             if v & 0x80000000 != 0:
 586                 v = - ((v ^ 0xffffffff) + 1)
 587             return v
 588
 589         def read_string(reader=None):
 590             if reader is None:
 591                 reader = code_reader
 592             slen = u30(reader)
 593             resb = reader.read(slen)
 594             assert len(resb) == slen
 595             return resb.decode('utf-8')
 596
 597         def read_bytes(count, reader=None):
 598             if reader is None:
 599                 reader = code_reader
 600             resb = reader.read(count)
 601             assert len(resb) == count
 602             return resb
 603
 604         def read_byte(reader=None):
 605             resb = read_bytes(1, reader=reader)
 606             res = struct.unpack('<B', resb)[0]
 607             return res
 608
 609         # minor_version + major_version
 610         read_bytes(2 + 2)
 611
 612         # Constant pool
 613         int_count = u30()
 614         for _c in range(1, int_count):
 615             s32()
 616         uint_count = u30()
 617         for _c in range(1, uint_count):
 618             u32()
 619         double_count = u30()
 620         read_bytes((double_count-1) * 8)
 621         string_count = u30()
 622         constant_strings = [u'']
 623         for _c in range(1, string_count):
 624             s = read_string()
 625             constant_strings.append(s)
 626         namespace_count = u30()
 627         for _c in range(1, namespace_count):
 628             read_bytes(1)  # kind
 629             u30()  # name
 630         ns_set_count = u30()
 631         for _c in range(1, ns_set_count):
 632             count = u30()
 633             for _c2 in range(count):
 634                 u30()
 635         multiname_count = u30()
 636         MULTINAME_SIZES = {
 637             0x07: 2,  # QName
 638             0x0d: 2,  # QNameA
 639             0x0f: 1,  # RTQName
 640             0x10: 1,  # RTQNameA
 641             0x11: 0,  # RTQNameL
 642             0x12: 0,  # RTQNameLA
 643             0x09: 2,  # Multiname
 644             0x0e: 2,  # MultinameA
 645             0x1b: 1,  # MultinameL
 646             0x1c: 1,  # MultinameLA
 647         }
 648         multinames = [u'']
 649         for _c in range(1, multiname_count):
 650             kind = u30()
 651             assert kind in MULTINAME_SIZES, u'Invalid multiname kind %r' % kind
 652             if kind == 0x07:
 653                 u30()  # namespace_idx
 654                 name_idx = u30()
 655                 multinames.append(constant_strings[name_idx])
 656             else:
 657                 multinames.append('[MULTINAME kind: %d]' % kind)
 658                 for _c2 in range(MULTINAME_SIZES[kind]):
 659                     u30()
 660
 661         # Methods
 662         method_count = u30()
 663         MethodInfo = collections.namedtuple(
 664             'MethodInfo',
 665             ['NEED_ARGUMENTS', 'NEED_REST'])
 666         method_infos = []
 667         for method_id in range(method_count):
 668             param_count = u30()
 669             u30()  # return type
 670             for _ in range(param_count):
 671                 u30()  # param type
 672             u30()  # name index (always 0 for youtube)
 673             flags = read_byte()
 674             if flags & 0x08 != 0:
 675                 # Options present
 676                 option_count = u30()
 677                 for c in range(option_count):
 678                     u30()  # val
 679                     read_bytes(1)  # kind
 680             if flags & 0x80 != 0:
 681                 # Param names present
 682                 for _ in range(param_count):
 683                     u30()  # param name
 684             mi = MethodInfo(flags & 0x01 != 0, flags & 0x04 != 0)
 685             method_infos.append(mi)
 686
 687         # Metadata
 688         metadata_count = u30()
 689         for _c in range(metadata_count):
 690             u30()  # name
 691             item_count = u30()
 692             for _c2 in range(item_count):
 693                 u30()  # key
 694                 u30()  # value
 695
 696         def parse_traits_info():
 697             trait_name_idx = u30()
 698             kind_full = read_byte()
 699             kind = kind_full & 0x0f
 700             attrs = kind_full >> 4
 701             methods = {}
 702             if kind in [0x00, 0x06]:  # Slot or Const
 703                 u30()  # Slot id
 704                 u30()  # type_name_idx
 705                 vindex = u30()
 706                 if vindex != 0:
 707                     read_byte()  # vkind
 708             elif kind in [0x01, 0x02, 0x03]:  # Method / Getter / Setter
 709                 u30()  # disp_id
 710                 method_idx = u30()
 711                 methods[multinames[trait_name_idx]] = method_idx
 712             elif kind == 0x04:  # Class
 713                 u30()  # slot_id
 714                 u30()  # classi
 715             elif kind == 0x05:  # Function
 716                 u30()  # slot_id
 717                 function_idx = u30()
 718                 methods[function_idx] = multinames[trait_name_idx]
 719             else:
 720                 raise ExtractorError(u'Unsupported trait kind %d' % kind)
 721
 722             if attrs & 0x4 != 0:  # Metadata present
 723                 metadata_count = u30()
 724                 for _c3 in range(metadata_count):
 725                     u30()  # metadata index
 726
 727             return methods
 728
 729         # Classes
 730         TARGET_CLASSNAME = u'SignatureDecipher'
 731         searched_idx = multinames.index(TARGET_CLASSNAME)
 732         searched_class_id = None
 733         class_count = u30()
 734         for class_id in range(class_count):
 735             name_idx = u30()
 736             if name_idx == searched_idx:
 737                 # We found the class we're looking for!
 738                 searched_class_id = class_id
 739             u30()  # super_name idx
 740             flags = read_byte()
 741             if flags & 0x08 != 0:  # Protected namespace is present
 742                 u30()  # protected_ns_idx
 743             intrf_count = u30()
 744             for _c2 in range(intrf_count):
 745                 u30()
 746             u30()  # iinit
 747             trait_count = u30()
 748             for _c2 in range(trait_count):
 749                 parse_traits_info()
 750
 751         if searched_class_id is None:
 752             raise ExtractorError(u'Target class %r not found' %
 753                                  TARGET_CLASSNAME)
 754
 755         method_names = {}
 756         method_idxs = {}
 757         for class_id in range(class_count):
 758             u30()  # cinit
 759             trait_count = u30()
 760             for _c2 in range(trait_count):
 761                 trait_methods = parse_traits_info()
 762                 if class_id == searched_class_id:
 763                     method_names.update(trait_methods.items())
 764                     method_idxs.update(dict(
 765                         (idx, name)
 766                         for name, idx in trait_methods.items()))
 767
 768         # Scripts
 769         script_count = u30()
 770         for _c in range(script_count):
 771             u30()  # init
 772             trait_count = u30()
 773             for _c2 in range(trait_count):
 774                 parse_traits_info()
 775
 776         # Method bodies
 777         method_body_count = u30()
 778         Method = collections.namedtuple('Method', ['code', 'local_count'])
 779         methods = {}
 780         for _c in range(method_body_count):
 781             method_idx = u30()
 782             u30()  # max_stack
 783             local_count = u30()
 784             u30()  # init_scope_depth
 785             u30()  # max_scope_depth
 786             code_length = u30()
 787             code = read_bytes(code_length)
 788             if method_idx in method_idxs:
 789                 m = Method(code, local_count)
 790                 methods[method_idxs[method_idx]] = m
 791             exception_count = u30()
 792             for _c2 in range(exception_count):
 793                 u30()  # from
 794                 u30()  # to
 795                 u30()  # target
 796                 u30()  # exc_type
 797                 u30()  # var_name
 798             trait_count = u30()
 799             for _c2 in range(trait_count):
 800                 parse_traits_info()
 801
 802         assert p + code_reader.tell() == len(code_tag)
 803         assert len(methods) == len(method_idxs)
 804
 805         method_pyfunctions = {}
 806
 807         def extract_function(func_name):
 808             if func_name in method_pyfunctions:
 809                 return method_pyfunctions[func_name]
 810             if func_name not in methods:
 811                 raise ExtractorError(u'Cannot find function %r' % func_name)
 812             m = methods[func_name]
 813
 814             def resfunc(args):
 815                 registers = ['(this)'] + list(args) + [None] * m.local_count
 816                 stack = []
 817                 coder = io.BytesIO(m.code)
 818                 while True:
 819                     opcode = struct.unpack('!B', coder.read(1))[0]
 820                     if opcode == 36:  # pushbyte
 821                         v = struct.unpack('!B', coder.read(1))[0]
 822                         stack.append(v)
 823                     elif opcode == 44:  # pushstring
 824                         idx = u30(coder)
 825                         stack.append(constant_strings[idx])
 826                     elif opcode == 48:  # pushscope
 827                         # We don't implement the scope register, so we'll just
 828                         # ignore the popped value
 829                         stack.pop()
 830                     elif opcode == 70:  # callproperty
 831                         index = u30(coder)
 832                         mname = multinames[index]
 833                         arg_count = u30(coder)
 834                         args = list(reversed(
 835                             [stack.pop() for _ in range(arg_count)]))
 836                         obj = stack.pop()
 837                         if mname == u'split':
 838                             assert len(args) == 1
 839                             assert isinstance(args[0], compat_str)
 840                             assert isinstance(obj, compat_str)
 841                             if args[0] == u'':
 842                                 res = list(obj)
 843                             else:
 844                                 res = obj.split(args[0])
 845                             stack.append(res)
 846                         elif mname == u'slice':
 847                             assert len(args) == 1
 848                             assert isinstance(args[0], int)
 849                             assert isinstance(obj, list)
 850                             res = obj[args[0]:]
 851                             stack.append(res)
 852                         elif mname == u'join':
 853                             assert len(args) == 1
 854                             assert isinstance(args[0], compat_str)
 855                             assert isinstance(obj, list)
 856                             res = args[0].join(obj)
 857                             stack.append(res)
 858                         elif mname in method_pyfunctions:
 859                             stack.append(method_pyfunctions[mname](args))
 860                         else:
 861                             raise NotImplementedError(
 862                                 u'Unsupported property %r on %r'
 863                                 % (mname, obj))
 864                     elif opcode == 72:  # returnvalue
 865                         res = stack.pop()
 866                         return res
 867                     elif opcode == 79:  # callpropvoid
 868                         index = u30(coder)
 869                         mname = multinames[index]
 870                         arg_count = u30(coder)
 871                         args = list(reversed(
 872                             [stack.pop() for _ in range(arg_count)]))
 873                         obj = stack.pop()
 874                         if mname == u'reverse':
 875                             assert isinstance(obj, list)
 876                             obj.reverse()
 877                         else:
 878                             raise NotImplementedError(
 879                                 u'Unsupported (void) property %r on %r'
 880                                 % (mname, obj))
 881                     elif opcode == 93:  # findpropstrict
 882                         index = u30(coder)
 883                         mname = multinames[index]
 884                         res = extract_function(mname)
 885                         stack.append(res)
 886                     elif opcode == 97:  # setproperty
 887                         index = u30(coder)
 888                         value = stack.pop()
 889                         idx = stack.pop()
 890                         obj = stack.pop()
 891                         assert isinstance(obj, list)
 892                         assert isinstance(idx, int)
 893                         obj[idx] = value
 894                     elif opcode == 98:  # getlocal
 895                         index = u30(coder)
 896                         stack.append(registers[index])
 897                     elif opcode == 99:  # setlocal
 898                         index = u30(coder)
 899                         value = stack.pop()
 900                         registers[index] = value
 901                     elif opcode == 102:  # getproperty
 902                         index = u30(coder)
 903                         pname = multinames[index]
 904                         if pname == u'length':
 905                             obj = stack.pop()
 906                             assert isinstance(obj, list)
 907                             stack.append(len(obj))
 908                         else:  # Assume attribute access
 909                             idx = stack.pop()
 910                             assert isinstance(idx, int)
 911                             obj = stack.pop()
 912                             assert isinstance(obj, list)
 913                             stack.append(obj[idx])
 914                     elif opcode == 128:  # coerce
 915                         u30(coder)
 916                     elif opcode == 133:  # coerce_s
 917                         assert isinstance(stack[-1], (type(None), compat_str))
 918                     elif opcode == 164:  # modulo
 919                         value2 = stack.pop()
 920                         value1 = stack.pop()
 921                         res = value1 % value2
 922                         stack.append(res)
 923                     elif opcode == 208:  # getlocal_0
 924                         stack.append(registers[0])
 925                     elif opcode == 209:  # getlocal_1
 926                         stack.append(registers[1])
 927                     elif opcode == 210:  # getlocal_2
 928                         stack.append(registers[2])
 929                     elif opcode == 211:  # getlocal_3
 930                         stack.append(registers[3])
 931                     elif opcode == 214:  # setlocal_2
 932                         registers[2] = stack.pop()
 933                     elif opcode == 215:  # setlocal_3
 934                         registers[3] = stack.pop()
 935                     else:
 936                         raise NotImplementedError(
 937                             u'Unsupported opcode %d' % opcode)
 938
 939             method_pyfunctions[func_name] = resfunc
 940             return resfunc
 941
 942         initial_function = extract_function(u'decipher')
 943         return lambda s: initial_function([s])
 944
 945     def _decrypt_signature(self, s, video_id, player_url, age_gate=False):
 946         """Turn the encrypted s field into a working signature"""
 947
 948         if player_url is not None:
 949             if player_url.startswith(u'//'):
 950                 player_url = u'https:' + player_url
 951             try:
 952                 player_id = (player_url, len(s))
 953                 if player_id not in self._player_cache:
 954                     func = self._extract_signature_function(
 955                         video_id, player_url, len(s)
 956                     )
 957                     self._player_cache[player_id] = func
 958                 func = self._player_cache[player_id]
 959                 if self._downloader.params.get('youtube_print_sig_code'):
 960                     self._print_sig_code(func, len(s))
 961                 return func(s)
 962             except Exception:
 963                 tb = traceback.format_exc()
 964                 self._downloader.report_warning(
 965                     u'Automatic signature extraction failed: ' + tb)
 966
 967             self._downloader.report_warning(
 968                 u'Warning: Falling back to static signature algorithm')
 969
 970         return self._static_decrypt_signature(
 971             s, video_id, player_url, age_gate)
 972
 973     def _static_decrypt_signature(self, s, video_id, player_url, age_gate):
 974         if age_gate:
 975             # The videos with age protection use another player, so the
 976             # algorithms can be different.
 977             if len(s) == 86:
 978                 return s[2:63] + s[82] + s[64:82] + s[63]
 979
 980         if len(s) == 93:
 981             return s[86:29:-1] + s[88] + s[28:5:-1]
 982         elif len(s) == 92:
 983             return s[25] + s[3:25] + s[0] + s[26:42] + s[79] + s[43:79] + s[91] + s[80:83]
 984         elif len(s) == 91:
 985             return s[84:27:-1] + s[86] + s[26:5:-1]
 986         elif len(s) == 90:
 987             return s[25] + s[3:25] + s[2] + s[26:40] + s[77] + s[41:77] + s[89] + s[78:81]
 988         elif len(s) == 89:
 989             return s[84:78:-1] + s[87] + s[77:60:-1] + s[0] + s[59:3:-1]
 990         elif len(s) == 88:
 991             return s[7:28] + s[87] + s[29:45] + s[55] + s[46:55] + s[2] + s[56:87] + s[28]
 992         elif len(s) == 87:
 993             return s[6:27] + s[4] + s[28:39] + s[27] + s[40:59] + s[2] + s[60:]
 994         elif len(s) == 86:
 995             return s[80:72:-1] + s[16] + s[71:39:-1] + s[72] + s[38:16:-1] + s[82] + s[15::-1]
 996         elif len(s) == 85:
 997             return s[3:11] + s[0] + s[12:55] + s[84] + s[56:84]
 998         elif len(s) == 84:
 999             return s[78:70:-1] + s[14] + s[69:37:-1] + s[70] + s[36:14:-1] + s[80] + s[:14][::-1]
1000         elif len(s) == 83:
1001             return s[80:63:-1] + s[0] + s[62:0:-1] + s[63]
1002         elif len(s) == 82:
1003             return s[80:37:-1] + s[7] + s[36:7:-1] + s[0] + s[6:0:-1] + s[37]
1004         elif len(s) == 81:
1005             return s[56] + s[79:56:-1] + s[41] + s[55:41:-1] + s[80] + s[40:34:-1] + s[0] + s[33:29:-1] + s[34] + s[28:9:-1] + s[29] + s[8:0:-1] + s[9]
1006         elif len(s) == 80:
1007             return s[1:19] + s[0] + s[20:68] + s[19] + s[69:80]
1008         elif len(s) == 79:
1009             return s[54] + s[77:54:-1] + s[39] + s[53:39:-1] + s[78] + s[38:34:-1] + s[0] + s[33:29:-1] + s[34] + s[28:9:-1] + s[29] + s[8:0:-1] + s[9]
1010
1011         else:
1012             raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
1013
1014     def _get_available_subtitles(self, video_id, webpage):
1015         try:
1016             sub_list = self._download_webpage(
1017                 'http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id,
1018                 video_id, note=False)
1019         except ExtractorError as err:
1020             self._downloader.report_warning(u'unable to download video subtitles: %s' % compat_str(err))
1021             return {}
1022         lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list)
1023
1024         sub_lang_list = {}
1025         for l in lang_list:
1026             lang = l[1]
1027             params = compat_urllib_parse.urlencode({
1028                 'lang': lang,
1029                 'v': video_id,
1030                 'fmt': self._downloader.params.get('subtitlesformat', 'srt'),
1031                 'name': unescapeHTML(l[0]).encode('utf-8'),
1032             })
1033             url = u'http://www.youtube.com/api/timedtext?' + params
1034             sub_lang_list[lang] = url
1035         if not sub_lang_list:
1036             self._downloader.report_warning(u'video doesn\'t have subtitles')
1037             return {}
1038         return sub_lang_list
1039
1040     def _get_available_automatic_caption(self, video_id, webpage):
1041         """We need the webpage for getting the captions url, pass it as an
1042            argument to speed up the process."""
1043         sub_format = self._downloader.params.get('subtitlesformat', 'srt')
1044         self.to_screen(u'%s: Looking for automatic captions' % video_id)
1045         mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
1046         err_msg = u'Couldn\'t find automatic captions for %s' % video_id
1047         if mobj is None:
1048             self._downloader.report_warning(err_msg)
1049             return {}
1050         player_config = json.loads(mobj.group(1))
1051         try:
1052             args = player_config[u'args']
1053             caption_url = args[u'ttsurl']
1054             timestamp = args[u'timestamp']
1055             # We get the available subtitles
1056             list_params = compat_urllib_parse.urlencode({
1057                 'type': 'list',
1058                 'tlangs': 1,
1059                 'asrs': 1,
1060             })
1061             list_url = caption_url + '&' + list_params
1062             caption_list = self._download_xml(list_url, video_id)
1063             original_lang_node = caption_list.find('track')
1064             if original_lang_node is None or original_lang_node.attrib.get('kind') != 'asr' :
1065                 self._downloader.report_warning(u'Video doesn\'t have automatic captions')
1066                 return {}
1067             original_lang = original_lang_node.attrib['lang_code']
1068
1069             sub_lang_list = {}
1070             for lang_node in caption_list.findall('target'):
1071                 sub_lang = lang_node.attrib['lang_code']
1072                 params = compat_urllib_parse.urlencode({
1073                     'lang': original_lang,
1074                     'tlang': sub_lang,
1075                     'fmt': sub_format,
1076                     'ts': timestamp,
1077                     'kind': 'asr',
1078                 })
1079                 sub_lang_list[sub_lang] = caption_url + '&' + params
1080             return sub_lang_list
1081         # An extractor error can be raise by the download process if there are
1082         # no automatic captions but there are subtitles
1083         except (KeyError, ExtractorError):
1084             self._downloader.report_warning(err_msg)
1085             return {}
1086
1087     def _extract_id(self, url):
1088         mobj = re.match(self._VALID_URL, url, re.VERBOSE)
1089         if mobj is None:
1090             raise ExtractorError(u'Invalid URL: %s' % url)
1091         video_id = mobj.group(2)
1092         return video_id
1093
1094     def _extract_from_m3u8(self, manifest_url, video_id):
1095         url_map = {}
1096         def _get_urls(_manifest):
1097             lines = _manifest.split('\n')
1098             urls = filter(lambda l: l and not l.startswith('#'),
1099                             lines)
1100             return urls
1101         manifest = self._download_webpage(manifest_url, video_id, u'Downloading formats manifest')
1102         formats_urls = _get_urls(manifest)
1103         for format_url in formats_urls:
1104             itag = self._search_regex(r'itag/(\d+?)/', format_url, 'itag')
1105             url_map[itag] = format_url
1106         return url_map
1107
1108     def _extract_annotations(self, video_id):
1109         url = 'https://www.youtube.com/annotations_invideo?features=1&legacy=1&video_id=%s' % video_id
1110         return self._download_webpage(url, video_id, note=u'Searching for annotations.', errnote=u'Unable to download video annotations.')
1111
1112     def _real_extract(self, url):
1113         # Extract original video URL from URL with redirection, like age verification, using next_url parameter
1114         mobj = re.search(self._NEXT_URL_RE, url)
1115         if mobj:
1116             url = 'https://www.youtube.com/' + compat_urllib_parse.unquote(mobj.group(1)).lstrip('/')
1117         video_id = self._extract_id(url)
1118
1119         # Get video webpage
1120         url = 'https://www.youtube.com/watch?v=%s&gl=US&hl=en&has_verified=1' % video_id
1121         video_webpage = self._download_webpage(url, video_id)
1122
1123         # Attempt to extract SWF player URL
1124         mobj = re.search(r'swfConfig.*?"(https?:\\/\\/.*?watch.*?-.*?\.swf)"', video_webpage)
1125         if mobj is not None:
1126             player_url = re.sub(r'\\(.)', r'\1', mobj.group(1))
1127         else:
1128             player_url = None
1129
1130         # Get video info
1131         self.report_video_info_webpage_download(video_id)
1132         if re.search(r'player-age-gate-content">', video_webpage) is not None:
1133             self.report_age_confirmation()
1134             age_gate = True
1135             # We simulate the access to the video from www.youtube.com/v/{video_id}
1136             # this can be viewed without login into Youtube
1137             data = compat_urllib_parse.urlencode({'video_id': video_id,
1138                                                   'el': 'player_embedded',
1139                                                   'gl': 'US',
1140                                                   'hl': 'en',
1141                                                   'eurl': 'https://youtube.googleapis.com/v/' + video_id,
1142                                                   'asv': 3,
1143                                                   'sts':'1588',
1144                                                   })
1145             video_info_url = 'https://www.youtube.com/get_video_info?' + data
1146             video_info_webpage = self._download_webpage(video_info_url, video_id,
1147                                     note=False,
1148                                     errnote='unable to download video info webpage')
1149             video_info = compat_parse_qs(video_info_webpage)
1150         else:
1151             age_gate = False
1152             for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']:
1153                 video_info_url = ('https://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
1154                         % (video_id, el_type))
1155                 video_info_webpage = self._download_webpage(video_info_url, video_id,
1156                                         note=False,
1157                                         errnote='unable to download video info webpage')
1158                 video_info = compat_parse_qs(video_info_webpage)
1159                 if 'token' in video_info:
1160                     break
1161         if 'token' not in video_info:
1162             if 'reason' in video_info:
1163                 raise ExtractorError(u'YouTube said: %s' % video_info['reason'][0], expected=True)
1164             else:
1165                 raise ExtractorError(u'"token" parameter not in video info for unknown reason')
1166
1167         if 'view_count' in video_info:
1168             view_count = int(video_info['view_count'][0])
1169         else:
1170             view_count = None
1171
1172         # Check for "rental" videos
1173         if 'ypc_video_rental_bar_text' in video_info and 'author' not in video_info:
1174             raise ExtractorError(u'"rental" videos not supported')
1175
1176         # Start extracting information
1177         self.report_information_extraction(video_id)
1178
1179         # uploader
1180         if 'author' not in video_info:
1181             raise ExtractorError(u'Unable to extract uploader name')
1182         video_uploader = compat_urllib_parse.unquote_plus(video_info['author'][0])
1183
1184         # uploader_id
1185         video_uploader_id = None
1186         mobj = re.search(r'<link itemprop="url" href="http://www.youtube.com/(?:user|channel)/([^"]+)">', video_webpage)
1187         if mobj is not None:
1188             video_uploader_id = mobj.group(1)
1189         else:
1190             self._downloader.report_warning(u'unable to extract uploader nickname')
1191
1192         # title
1193         if 'title' in video_info:
1194             video_title = compat_urllib_parse.unquote_plus(video_info['title'][0])
1195         else:
1196             self._downloader.report_warning(u'Unable to extract video title')
1197             video_title = u'_'
1198
1199         # thumbnail image
1200         # We try first to get a high quality image:
1201         m_thumb = re.search(r'<span itemprop="thumbnail".*?href="(.*?)">',
1202                             video_webpage, re.DOTALL)
1203         if m_thumb is not None:
1204             video_thumbnail = m_thumb.group(1)
1205         elif 'thumbnail_url' not in video_info:
1206             self._downloader.report_warning(u'unable to extract video thumbnail')
1207             video_thumbnail = None
1208         else:   # don't panic if we can't find it
1209             video_thumbnail = compat_urllib_parse.unquote_plus(video_info['thumbnail_url'][0])
1210
1211         # upload date
1212         upload_date = None
1213         mobj = re.search(r'id="eow-date.*?>(.*?)</span>', video_webpage, re.DOTALL)
1214         if mobj is not None:
1215             upload_date = ' '.join(re.sub(r'[/,-]', r' ', mobj.group(1)).split())
1216             upload_date = unified_strdate(upload_date)
1217
1218         # description
1219         video_description = get_element_by_id("eow-description", video_webpage)
1220         if video_description:
1221             video_description = re.sub(r'''(?x)
1222                 <a\s+
1223                     (?:[a-zA-Z-]+="[^"]+"\s+)*?
1224                     title="([^"]+)"\s+
1225                     (?:[a-zA-Z-]+="[^"]+"\s+)*?
1226                     class="yt-uix-redirect-link"\s*>
1227                 [^<]+
1228                 </a>
1229             ''', r'\1', video_description)
1230             video_description = clean_html(video_description)
1231         else:
1232             fd_mobj = re.search(r'<meta name="description" content="([^"]+)"', video_webpage)
1233             if fd_mobj:
1234                 video_description = unescapeHTML(fd_mobj.group(1))
1235             else:
1236                 video_description = u''
1237
1238         def _extract_count(klass):
1239             count = self._search_regex(
1240                 r'class="%s">([\d,]+)</span>' % re.escape(klass),
1241                 video_webpage, klass, default=None)
1242             if count is not None:
1243                 return int(count.replace(',', ''))
1244             return None
1245         like_count = _extract_count(u'likes-count')
1246         dislike_count = _extract_count(u'dislikes-count')
1247
1248         # subtitles
1249         video_subtitles = self.extract_subtitles(video_id, video_webpage)
1250
1251         if self._downloader.params.get('listsubtitles', False):
1252             self._list_available_subtitles(video_id, video_webpage)
1253             return
1254
1255         if 'length_seconds' not in video_info:
1256             self._downloader.report_warning(u'unable to extract video duration')
1257             video_duration = None
1258         else:
1259             video_duration = int(compat_urllib_parse.unquote_plus(video_info['length_seconds'][0]))
1260
1261         # annotations
1262         video_annotations = None
1263         if self._downloader.params.get('writeannotations', False):
1264                 video_annotations = self._extract_annotations(video_id)
1265
1266         # Decide which formats to download
1267         try:
1268             mobj = re.search(r';ytplayer.config = ({.*?});', video_webpage)
1269             if not mobj:
1270                 raise ValueError('Could not find vevo ID')
1271             info = json.loads(mobj.group(1))
1272             args = info['args']
1273             # Easy way to know if the 's' value is in url_encoded_fmt_stream_map
1274             # this signatures are encrypted
1275             if 'url_encoded_fmt_stream_map' not in args:
1276                 raise ValueError(u'No stream_map present')  # caught below
1277             re_signature = re.compile(r'[&,]s=')
1278             m_s = re_signature.search(args['url_encoded_fmt_stream_map'])
1279             if m_s is not None:
1280                 self.to_screen(u'%s: Encrypted signatures detected.' % video_id)
1281                 video_info['url_encoded_fmt_stream_map'] = [args['url_encoded_fmt_stream_map']]
1282             m_s = re_signature.search(args.get('adaptive_fmts', u''))
1283             if m_s is not None:
1284                 if 'adaptive_fmts' in video_info:
1285                     video_info['adaptive_fmts'][0] += ',' + args['adaptive_fmts']
1286                 else:
1287                     video_info['adaptive_fmts'] = [args['adaptive_fmts']]
1288         except ValueError:
1289             pass
1290
1291         def _map_to_format_list(urlmap):
1292             formats = []
1293             for itag, video_real_url in urlmap.items():
1294                 dct = {
1295                     'format_id': itag,
1296                     'url': video_real_url,
1297                     'player_url': player_url,
1298                 }
1299                 if itag in self._formats:
1300                     dct.update(self._formats[itag])
1301                 formats.append(dct)
1302             return formats
1303
1304         if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
1305             self.report_rtmp_download()
1306             formats = [{
1307                 'format_id': '_rtmp',
1308                 'protocol': 'rtmp',
1309                 'url': video_info['conn'][0],
1310                 'player_url': player_url,
1311             }]
1312         elif len(video_info.get('url_encoded_fmt_stream_map', [])) >= 1 or len(video_info.get('adaptive_fmts', [])) >= 1:
1313             encoded_url_map = video_info.get('url_encoded_fmt_stream_map', [''])[0] + ',' + video_info.get('adaptive_fmts',[''])[0]
1314             if 'rtmpe%3Dyes' in encoded_url_map:
1315                 raise ExtractorError('rtmpe downloads are not supported, see https://github.com/rg3/youtube-dl/issues/343 for more information.', expected=True)
1316             url_map = {}
1317             for url_data_str in encoded_url_map.split(','):
1318                 url_data = compat_parse_qs(url_data_str)
1319                 if 'itag' in url_data and 'url' in url_data:
1320                     url = url_data['url'][0]
1321                     if 'sig' in url_data:
1322                         url += '&signature=' + url_data['sig'][0]
1323                     elif 's' in url_data:
1324                         encrypted_sig = url_data['s'][0]
1325                         if self._downloader.params.get('verbose'):
1326                             if age_gate:
1327                                 if player_url is None:
1328                                     player_version = 'unknown'
1329                                 else:
1330                                     player_version = self._search_regex(
1331                                         r'-(.+)\.swf$', player_url,
1332                                         u'flash player', fatal=False)
1333                                 player_desc = 'flash player %s' % player_version
1334                             else:
1335                                 player_version = self._search_regex(
1336                                     r'html5player-(.+?)\.js', video_webpage,
1337                                     'html5 player', fatal=False)
1338                                 player_desc = u'html5 player %s' % player_version
1339
1340                             parts_sizes = u'.'.join(compat_str(len(part)) for part in encrypted_sig.split('.'))
1341                             self.to_screen(u'encrypted signature length %d (%s), itag %s, %s' %
1342                                 (len(encrypted_sig), parts_sizes, url_data['itag'][0], player_desc))
1343
1344                         if not age_gate:
1345                             jsplayer_url_json = self._search_regex(
1346                                 r'"assets":.+?"js":\s*("[^"]+")',
1347                                 video_webpage, u'JS player URL')
1348                             player_url = json.loads(jsplayer_url_json)
1349
1350                         signature = self._decrypt_signature(
1351                             encrypted_sig, video_id, player_url, age_gate)
1352                         url += '&signature=' + signature
1353                     if 'ratebypass' not in url:
1354                         url += '&ratebypass=yes'
1355                     url_map[url_data['itag'][0]] = url
1356             formats = _map_to_format_list(url_map)
1357         elif video_info.get('hlsvp'):
1358             manifest_url = video_info['hlsvp'][0]
1359             url_map = self._extract_from_m3u8(manifest_url, video_id)
1360             formats = _map_to_format_list(url_map)
1361         else:
1362             raise ExtractorError(u'no conn, hlsvp or url_encoded_fmt_stream_map information found in video info')
1363
1364         # Look for the DASH manifest
1365         dash_manifest_url_lst = video_info.get('dashmpd')
1366         if (dash_manifest_url_lst and dash_manifest_url_lst[0] and
1367                 self._downloader.params.get('youtube_include_dash_manifest', False)):
1368             try:
1369                 dash_doc = self._download_xml(
1370                     dash_manifest_url_lst[0], video_id,
1371                     note=u'Downloading DASH manifest',
1372                     errnote=u'Could not download DASH manifest')
1373                 for r in dash_doc.findall(u'.//{urn:mpeg:DASH:schema:MPD:2011}Representation'):
1374                     url_el = r.find('{urn:mpeg:DASH:schema:MPD:2011}BaseURL')
1375                     if url_el is None:
1376                         continue
1377                     format_id = r.attrib['id']
1378                     video_url = url_el.text
1379                     filesize = int_or_none(url_el.attrib.get('{http://youtube.com/yt/2012/10/10}contentLength'))
1380                     f = {
1381                         'format_id': format_id,
1382                         'url': video_url,
1383                         'width': int_or_none(r.attrib.get('width')),
1384                         'tbr': int_or_none(r.attrib.get('bandwidth'), 1000),
1385                         'asr': int_or_none(r.attrib.get('audioSamplingRate')),
1386                         'filesize': filesize,
1387                     }
1388                     try:
1389                         existing_format = next(
1390                             fo for fo in formats
1391                             if fo['format_id'] == format_id)
1392                     except StopIteration:
1393                         f.update(self._formats.get(format_id, {}))
1394                         formats.append(f)
1395                     else:
1396                         existing_format.update(f)
1397
1398             except (ExtractorError, KeyError) as e:
1399                 self.report_warning(u'Skipping DASH manifest: %s' % e, video_id)
1400
1401         self._sort_formats(formats)
1402
1403         return {
1404             'id':           video_id,
1405             'uploader':     video_uploader,
1406             'uploader_id':  video_uploader_id,
1407             'upload_date':  upload_date,
1408             'title':        video_title,
1409             'thumbnail':    video_thumbnail,
1410             'description':  video_description,
1411             'subtitles':    video_subtitles,
1412             'duration':     video_duration,
1413             'age_limit':    18 if age_gate else 0,
1414             'annotations':  video_annotations,
1415             'webpage_url': 'https://www.youtube.com/watch?v=%s' % video_id,
1416             'view_count':   view_count,
1417             'like_count': like_count,
1418             'dislike_count': dislike_count,
1419             'formats':      formats,
1420         }
1421
1422 class YoutubePlaylistIE(YoutubeBaseInfoExtractor):
1423     IE_DESC = u'YouTube.com playlists'
1424     _VALID_URL = r"""(?:
1425                         (?:https?://)?
1426                         (?:\w+\.)?
1427                         youtube\.com/
1428                         (?:
1429                            (?:course|view_play_list|my_playlists|artist|playlist|watch)
1430                            \? (?:.*?&)*? (?:p|a|list)=
1431                         |  p/
1432                         )
1433                         ((?:PL|EC|UU|FL|RD)?[0-9A-Za-z-_]{10,})
1434                         .*
1435                      |
1436                         ((?:PL|EC|UU|FL|RD)[0-9A-Za-z-_]{10,})
1437                      )"""
1438     _TEMPLATE_URL = 'https://www.youtube.com/playlist?list=%s&page=%s'
1439     _MORE_PAGES_INDICATOR = r'data-link-type="next"'
1440     _VIDEO_RE = r'href="/watch\?v=(?P<id>[0-9A-Za-z_-]{11})&amp;[^"]*?index=(?P<index>\d+)'
1441     IE_NAME = u'youtube:playlist'
1442
1443     @classmethod
1444     def suitable(cls, url):
1445         """Receives a URL and returns True if suitable for this IE."""
1446         return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
1447
1448     def _real_initialize(self):
1449         self._login()
1450
1451     def _ids_to_results(self, ids):
1452         return [self.url_result(vid_id, 'Youtube', video_id=vid_id)
1453                        for vid_id in ids]
1454
1455     def _extract_mix(self, playlist_id):
1456         # The mixes are generated from a a single video
1457         # the id of the playlist is just 'RD' + video_id
1458         url = 'https://youtube.com/watch?v=%s&list=%s' % (playlist_id[-11:], playlist_id)
1459         webpage = self._download_webpage(url, playlist_id, u'Downloading Youtube mix')
1460         title_span = (get_element_by_attribute('class', 'title long-title', webpage) or
1461             get_element_by_attribute('class', 'title ', webpage))
1462         title = clean_html(title_span)
1463         video_re = r'data-index="\d+".*?href="/watch\?v=([0-9A-Za-z_-]{11})&amp;[^"]*?list=%s' % re.escape(playlist_id)
1464         ids = orderedSet(re.findall(video_re, webpage))
1465         url_results = self._ids_to_results(ids)
1466
1467         return self.playlist_result(url_results, playlist_id, title)
1468
1469     def _real_extract(self, url):
1470         # Extract playlist id
1471         mobj = re.match(self._VALID_URL, url, re.VERBOSE)
1472         if mobj is None:
1473             raise ExtractorError(u'Invalid URL: %s' % url)
1474         playlist_id = mobj.group(1) or mobj.group(2)
1475
1476         # Check if it's a video-specific URL
1477         query_dict = compat_urlparse.parse_qs(compat_urlparse.urlparse(url).query)
1478         if 'v' in query_dict:
1479             video_id = query_dict['v'][0]
1480             if self._downloader.params.get('noplaylist'):
1481                 self.to_screen(u'Downloading just video %s because of --no-playlist' % video_id)
1482                 return self.url_result(video_id, 'Youtube', video_id=video_id)
1483             else:
1484                 self.to_screen(u'Downloading playlist PL%s - add --no-playlist to just download video %s' % (playlist_id, video_id))
1485
1486         if playlist_id.startswith('RD'):
1487             # Mixes require a custom extraction process
1488             return self._extract_mix(playlist_id)
1489         if playlist_id.startswith('TL'):
1490             raise ExtractorError(u'For downloading YouTube.com top lists, use '
1491                 u'the "yttoplist" keyword, for example "youtube-dl \'yttoplist:music:Top Tracks\'"', expected=True)
1492
1493         # Extract the video ids from the playlist pages
1494         ids = []
1495
1496         for page_num in itertools.count(1):
1497             url = self._TEMPLATE_URL % (playlist_id, page_num)
1498             page = self._download_webpage(url, playlist_id, u'Downloading page #%s' % page_num)
1499             matches = re.finditer(self._VIDEO_RE, page)
1500             # We remove the duplicates and the link with index 0
1501             # (it's not the first video of the playlist)
1502             new_ids = orderedSet(m.group('id') for m in matches if m.group('index') != '0')
1503             ids.extend(new_ids)
1504
1505             if re.search(self._MORE_PAGES_INDICATOR, page) is None:
1506                 break
1507
1508         try:
1509             playlist_title = self._og_search_title(page)
1510         except RegexNotFoundError:
1511             self.report_warning(
1512                 u'Playlist page is missing OpenGraph title, falling back ...',
1513                 playlist_id)
1514             playlist_title = self._html_search_regex(
1515                 r'<h1 class="pl-header-title">(.*?)</h1>', page, u'title')
1516
1517         url_results = self._ids_to_results(ids)
1518         return self.playlist_result(url_results, playlist_id, playlist_title)
1519
1520
1521 class YoutubeTopListIE(YoutubePlaylistIE):
1522     IE_NAME = u'youtube:toplist'
1523     IE_DESC = (u'YouTube.com top lists, "yttoplist:{channel}:{list title}"'
1524         u' (Example: "yttoplist:music:Top Tracks")')
1525     _VALID_URL = r'yttoplist:(?P<chann>.*?):(?P<title>.*?)$'
1526
1527     def _real_extract(self, url):
1528         mobj = re.match(self._VALID_URL, url)
1529         channel = mobj.group('chann')
1530         title = mobj.group('title')
1531         query = compat_urllib_parse.urlencode({'title': title})
1532         playlist_re = 'href="([^"]+?%s[^"]+?)"' % re.escape(query)
1533         channel_page = self._download_webpage('https://www.youtube.com/%s' % channel, title)
1534         link = self._html_search_regex(playlist_re, channel_page, u'list')
1535         url = compat_urlparse.urljoin('https://www.youtube.com/', link)
1536
1537         video_re = r'data-index="\d+".*?data-video-id="([0-9A-Za-z_-]{11})"'
1538         ids = []
1539         # sometimes the webpage doesn't contain the videos
1540         # retry until we get them
1541         for i in itertools.count(0):
1542             msg = u'Downloading Youtube mix'
1543             if i > 0:
1544                 msg += ', retry #%d' % i
1545             webpage = self._download_webpage(url, title, msg)
1546             ids = orderedSet(re.findall(video_re, webpage))
1547             if ids:
1548                 break
1549         url_results = self._ids_to_results(ids)
1550         return self.playlist_result(url_results, playlist_title=title)
1551
1552
1553 class YoutubeChannelIE(InfoExtractor):
1554     IE_DESC = u'YouTube.com channels'
1555     _VALID_URL = r"^(?:https?://)?(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/([0-9A-Za-z_-]+)"
1556     _MORE_PAGES_INDICATOR = 'yt-uix-load-more'
1557     _MORE_PAGES_URL = 'http://www.youtube.com/c4_browse_ajax?action_load_more_videos=1&flow=list&paging=%s&view=0&sort=da&channel_id=%s'
1558     IE_NAME = u'youtube:channel'
1559
1560     def extract_videos_from_page(self, page):
1561         ids_in_page = []
1562         for mobj in re.finditer(r'href="/watch\?v=([0-9A-Za-z_-]+)&?', page):
1563             if mobj.group(1) not in ids_in_page:
1564                 ids_in_page.append(mobj.group(1))
1565         return ids_in_page
1566
1567     def _real_extract(self, url):
1568         # Extract channel id
1569         mobj = re.match(self._VALID_URL, url)
1570         if mobj is None:
1571             raise ExtractorError(u'Invalid URL: %s' % url)
1572
1573         # Download channel page
1574         channel_id = mobj.group(1)
1575         video_ids = []
1576         url = 'https://www.youtube.com/channel/%s/videos' % channel_id
1577         channel_page = self._download_webpage(url, channel_id)
1578         autogenerated = re.search(r'''(?x)
1579                 class="[^"]*?(?:
1580                     channel-header-autogenerated-label|
1581                     yt-channel-title-autogenerated
1582                 )[^"]*"''', channel_page) is not None
1583
1584         if autogenerated:
1585             # The videos are contained in a single page
1586             # the ajax pages can't be used, they are empty
1587             video_ids = self.extract_videos_from_page(channel_page)
1588         else:
1589             # Download all channel pages using the json-based channel_ajax query
1590             for pagenum in itertools.count(1):
1591                 url = self._MORE_PAGES_URL % (pagenum, channel_id)
1592                 page = self._download_webpage(url, channel_id,
1593                                               u'Downloading page #%s' % pagenum)
1594
1595                 page = json.loads(page)
1596
1597                 ids_in_page = self.extract_videos_from_page(page['content_html'])
1598                 video_ids.extend(ids_in_page)
1599
1600                 if self._MORE_PAGES_INDICATOR not in page['load_more_widget_html']:
1601                     break
1602
1603         self._downloader.to_screen(u'[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
1604
1605         url_entries = [self.url_result(video_id, 'Youtube', video_id=video_id)
1606                        for video_id in video_ids]
1607         return self.playlist_result(url_entries, channel_id)
1608
1609
1610 class YoutubeUserIE(InfoExtractor):
1611     IE_DESC = u'YouTube.com user videos (URL or "ytuser" keyword)'
1612     _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/(?:user/)?(?!(?:attribution_link|watch)(?:$|[^a-z_A-Z0-9-])))|ytuser:)(?!feed/)([A-Za-z0-9_-]+)'
1613     _TEMPLATE_URL = 'http://gdata.youtube.com/feeds/api/users/%s'
1614     _GDATA_PAGE_SIZE = 50
1615     _GDATA_URL = 'http://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d&alt=json'
1616     IE_NAME = u'youtube:user'
1617
1618     @classmethod
1619     def suitable(cls, url):
1620         # Don't return True if the url can be extracted with other youtube
1621         # extractor, the regex would is too permissive and it would match.
1622         other_ies = iter(klass for (name, klass) in globals().items() if name.endswith('IE') and klass is not cls)
1623         if any(ie.suitable(url) for ie in other_ies): return False
1624         else: return super(YoutubeUserIE, cls).suitable(url)
1625
1626     def _real_extract(self, url):
1627         # Extract username
1628         mobj = re.match(self._VALID_URL, url)
1629         if mobj is None:
1630             raise ExtractorError(u'Invalid URL: %s' % url)
1631
1632         username = mobj.group(1)
1633
1634         # Download video ids using YouTube Data API. Result size per
1635         # query is limited (currently to 50 videos) so we need to query
1636         # page by page until there are no video ids - it means we got
1637         # all of them.
1638
1639         def download_page(pagenum):
1640             start_index = pagenum * self._GDATA_PAGE_SIZE + 1
1641
1642             gdata_url = self._GDATA_URL % (username, self._GDATA_PAGE_SIZE, start_index)
1643             page = self._download_webpage(
1644                 gdata_url, username,
1645                 u'Downloading video ids from %d to %d' % (
1646                     start_index, start_index + self._GDATA_PAGE_SIZE))
1647
1648             try:
1649                 response = json.loads(page)
1650             except ValueError as err:
1651                 raise ExtractorError(u'Invalid JSON in API response: ' + compat_str(err))
1652             if 'entry' not in response['feed']:
1653                 return
1654
1655             # Extract video identifiers
1656             entries = response['feed']['entry']
1657             for entry in entries:
1658                 title = entry['title']['$t']
1659                 video_id = entry['id']['$t'].split('/')[-1]
1660                 yield {
1661                     '_type': 'url',
1662                     'url': video_id,
1663                     'ie_key': 'Youtube',
1664                     'id': 'video_id',
1665                     'title': title,
1666                 }
1667         url_results = PagedList(download_page, self._GDATA_PAGE_SIZE)
1668
1669         return self.playlist_result(url_results, playlist_title=username)
1670
1671
1672 class YoutubeSearchIE(SearchInfoExtractor):
1673     IE_DESC = u'YouTube.com searches'
1674     _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc'
1675     _MAX_RESULTS = 1000
1676     IE_NAME = u'youtube:search'
1677     _SEARCH_KEY = 'ytsearch'
1678
1679     def _get_n_results(self, query, n):
1680         """Get a specified number of results for a query"""
1681
1682         video_ids = []
1683         pagenum = 0
1684         limit = n
1685
1686         while (50 * pagenum) < limit:
1687             result_url = self._API_URL % (compat_urllib_parse.quote_plus(query), (50*pagenum)+1)
1688             data_json = self._download_webpage(
1689                 result_url, video_id=u'query "%s"' % query,
1690                 note=u'Downloading page %s' % (pagenum + 1),
1691                 errnote=u'Unable to download API page')
1692             data = json.loads(data_json)
1693             api_response = data['data']
1694
1695             if 'items' not in api_response:
1696                 raise ExtractorError(u'[youtube] No video results')
1697
1698             new_ids = list(video['id'] for video in api_response['items'])
1699             video_ids += new_ids
1700
1701             limit = min(n, api_response['totalItems'])
1702             pagenum += 1
1703
1704         if len(video_ids) > n:
1705             video_ids = video_ids[:n]
1706         videos = [self.url_result(video_id, 'Youtube', video_id=video_id)
1707                   for video_id in video_ids]
1708         return self.playlist_result(videos, query)
1709
1710 class YoutubeSearchDateIE(YoutubeSearchIE):
1711     IE_NAME = YoutubeSearchIE.IE_NAME + ':date'
1712     _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc&orderby=published'
1713     _SEARCH_KEY = 'ytsearchdate'
1714     IE_DESC = u'YouTube.com searches, newest videos first'
1715
1716 class YoutubeShowIE(InfoExtractor):
1717     IE_DESC = u'YouTube.com (multi-season) shows'
1718     _VALID_URL = r'https?://www\.youtube\.com/show/(.*)'
1719     IE_NAME = u'youtube:show'
1720
1721     def _real_extract(self, url):
1722         mobj = re.match(self._VALID_URL, url)
1723         show_name = mobj.group(1)
1724         webpage = self._download_webpage(url, show_name, u'Downloading show webpage')
1725         # There's one playlist for each season of the show
1726         m_seasons = list(re.finditer(r'href="(/playlist\?list=.*?)"', webpage))
1727         self.to_screen(u'%s: Found %s seasons' % (show_name, len(m_seasons)))
1728         return [self.url_result('https://www.youtube.com' + season.group(1), 'YoutubePlaylist') for season in m_seasons]
1729
1730
1731 class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
1732     """
1733     Base class for extractors that fetch info from
1734     http://www.youtube.com/feed_ajax
1735     Subclasses must define the _FEED_NAME and _PLAYLIST_TITLE properties.
1736     """
1737     _LOGIN_REQUIRED = True
1738     # use action_load_personal_feed instead of action_load_system_feed
1739     _PERSONAL_FEED = False
1740
1741     @property
1742     def _FEED_TEMPLATE(self):
1743         action = 'action_load_system_feed'
1744         if self._PERSONAL_FEED:
1745             action = 'action_load_personal_feed'
1746         return 'http://www.youtube.com/feed_ajax?%s=1&feed_name=%s&paging=%%s' % (action, self._FEED_NAME)
1747
1748     @property
1749     def IE_NAME(self):
1750         return u'youtube:%s' % self._FEED_NAME
1751
1752     def _real_initialize(self):
1753         self._login()
1754
1755     def _real_extract(self, url):
1756         feed_entries = []
1757         paging = 0
1758         for i in itertools.count(1):
1759             info = self._download_webpage(self._FEED_TEMPLATE % paging,
1760                                           u'%s feed' % self._FEED_NAME,
1761                                           u'Downloading page %s' % i)
1762             info = json.loads(info)
1763             feed_html = info['feed_html']
1764             m_ids = re.finditer(r'"/watch\?v=(.*?)["&]', feed_html)
1765             ids = orderedSet(m.group(1) for m in m_ids)
1766             feed_entries.extend(
1767                 self.url_result(video_id, 'Youtube', video_id=video_id)
1768                 for video_id in ids)
1769             if info['paging'] is None:
1770                 break
1771             paging = info['paging']
1772         return self.playlist_result(feed_entries, playlist_title=self._PLAYLIST_TITLE)
1773
1774 class YoutubeSubscriptionsIE(YoutubeFeedsInfoExtractor):
1775     IE_DESC = u'YouTube.com subscriptions feed, "ytsubs" keyword(requires authentication)'
1776     _VALID_URL = r'https?://www\.youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
1777     _FEED_NAME = 'subscriptions'
1778     _PLAYLIST_TITLE = u'Youtube Subscriptions'
1779
1780 class YoutubeRecommendedIE(YoutubeFeedsInfoExtractor):
1781     IE_DESC = u'YouTube.com recommended videos, "ytrec" keyword (requires authentication)'
1782     _VALID_URL = r'https?://www\.youtube\.com/feed/recommended|:ytrec(?:ommended)?'
1783     _FEED_NAME = 'recommended'
1784     _PLAYLIST_TITLE = u'Youtube Recommended videos'
1785
1786 class YoutubeWatchLaterIE(YoutubeFeedsInfoExtractor):
1787     IE_DESC = u'Youtube watch later list, "ytwatchlater" keyword (requires authentication)'
1788     _VALID_URL = r'https?://www\.youtube\.com/feed/watch_later|:ytwatchlater'
1789     _FEED_NAME = 'watch_later'
1790     _PLAYLIST_TITLE = u'Youtube Watch Later'
1791     _PERSONAL_FEED = True
1792
1793 class YoutubeHistoryIE(YoutubeFeedsInfoExtractor):
1794     IE_DESC = u'Youtube watch history, "ythistory" keyword (requires authentication)'
1795     _VALID_URL = u'https?://www\.youtube\.com/feed/history|:ythistory'
1796     _FEED_NAME = 'history'
1797     _PERSONAL_FEED = True
1798     _PLAYLIST_TITLE = u'Youtube Watch History'
1799
1800 class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
1801     IE_NAME = u'youtube:favorites'
1802     IE_DESC = u'YouTube.com favourite videos, "ytfav" keyword (requires authentication)'
1803     _VALID_URL = r'https?://www\.youtube\.com/my_favorites|:ytfav(?:ou?rites)?'
1804     _LOGIN_REQUIRED = True
1805
1806     def _real_extract(self, url):
1807         webpage = self._download_webpage('https://www.youtube.com/my_favorites', 'Youtube Favourites videos')
1808         playlist_id = self._search_regex(r'list=(.+?)["&]', webpage, u'favourites playlist id')
1809         return self.url_result(playlist_id, 'YoutubePlaylist')
1810
1811
1812 class YoutubeTruncatedURLIE(InfoExtractor):
1813     IE_NAME = 'youtube:truncated_url'
1814     IE_DESC = False  # Do not list
1815     _VALID_URL = r'''(?x)
1816         (?:https?://)?[^/]+/watch\?feature=[a-z_]+$|
1817         (?:https?://)?(?:www\.)?youtube\.com/attribution_link\?a=[^&]+$
1818     '''
1819
1820     def _real_extract(self, url):
1821         raise ExtractorError(
1822             u'Did you forget to quote the URL? Remember that & is a meta '
1823             u'character in most shells, so you want to put the URL in quotes, '
1824             u'like  youtube-dl '
1825             u'"http://www.youtube.com/watch?feature=foo&v=BaW_jenozKc" '
1826             u' or simply  youtube-dl BaW_jenozKc  .',
1827             expected=True)