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Merge pull request #1409 from JohnyMoSwag/master (closes #1404)
[youtube-dl] / youtube_dl / extractor / youtube.py
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 109c8a93fa9ca7cb4caeca87462e1385a802bb69..f49665925fdeadeb9f3f64f9eafb7c7a12080fee 100644 (file)
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -4,8 +4,11 @@ import json
 import netrc
 import re
 import socket
 import netrc
 import re
 import socket
+import itertools
+import xml.etree.ElementTree
 
 from .common import InfoExtractor, SearchInfoExtractor
 
 from .common import InfoExtractor, SearchInfoExtractor
+from .subtitles import SubtitlesInfoExtractor
 from ..utils import (
     compat_http_client,
     compat_parse_qs,
 from ..utils import (
     compat_http_client,
     compat_parse_qs,
@@ -19,50 +22,223 @@ from ..utils import (
     ExtractorError,
     unescapeHTML,
     unified_strdate,
     ExtractorError,
     unescapeHTML,
     unified_strdate,
+    orderedSet,
 )
 
 )
 
+class YoutubeBaseInfoExtractor(InfoExtractor):
+    """Provide base functions for Youtube extractors"""
+    _LOGIN_URL = 'https://accounts.google.com/ServiceLogin'
+    _LANG_URL = r'https://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1'
+    _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'
+    _NETRC_MACHINE = 'youtube'
+    # If True it will raise an error if no login info is provided
+    _LOGIN_REQUIRED = False
+
+    def report_lang(self):
+        """Report attempt to set language."""
+        self.to_screen(u'Setting language')
+
+    def _set_language(self):
+        request = compat_urllib_request.Request(self._LANG_URL)
+        try:
+            self.report_lang()
+            compat_urllib_request.urlopen(request).read()
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            self._downloader.report_warning(u'unable to set language: %s' % compat_str(err))
+            return False
+        return True
 
 
-class YoutubeIE(InfoExtractor):
-    """Information extractor for youtube.com."""
+    def _login(self):
+        (username, password) = self._get_login_info()
+        # No authentication to be performed
+        if username is None:
+            if self._LOGIN_REQUIRED:
+                raise ExtractorError(u'No login info available, needed for using %s.' % self.IE_NAME, expected=True)
+            return False
 
 
+        request = compat_urllib_request.Request(self._LOGIN_URL)
+        try:
+            login_page = compat_urllib_request.urlopen(request).read().decode('utf-8')
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            self._downloader.report_warning(u'unable to fetch login page: %s' % compat_str(err))
+            return False
+
+        galx = None
+        dsh = None
+        match = re.search(re.compile(r'<input.+?name="GALX".+?value="(.+?)"', re.DOTALL), login_page)
+        if match:
+          galx = match.group(1)
+        match = re.search(re.compile(r'<input.+?name="dsh".+?value="(.+?)"', re.DOTALL), login_page)
+        if match:
+          dsh = match.group(1)
+
+        # Log in
+        login_form_strs = {
+                u'continue': u'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1',
+                u'Email': username,
+                u'GALX': galx,
+                u'Passwd': password,
+                u'PersistentCookie': u'yes',
+                u'_utf8': u'霱',
+                u'bgresponse': u'js_disabled',
+                u'checkConnection': u'',
+                u'checkedDomains': u'youtube',
+                u'dnConn': u'',
+                u'dsh': dsh,
+                u'pstMsg': u'0',
+                u'rmShown': u'1',
+                u'secTok': u'',
+                u'signIn': u'Sign in',
+                u'timeStmp': u'',
+                u'service': u'youtube',
+                u'uilel': u'3',
+                u'hl': u'en_US',
+        }
+        # Convert to UTF-8 *before* urlencode because Python 2.x's urlencode
+        # chokes on unicode
+        login_form = dict((k.encode('utf-8'), v.encode('utf-8')) for k,v in login_form_strs.items())
+        login_data = compat_urllib_parse.urlencode(login_form).encode('ascii')
+        request = compat_urllib_request.Request(self._LOGIN_URL, login_data)
+        try:
+            self.report_login()
+            login_results = compat_urllib_request.urlopen(request).read().decode('utf-8')
+            if re.search(r'(?i)<form[^>]* id="gaia_loginform"', login_results) is not None:
+                self._downloader.report_warning(u'unable to log in: bad username or password')
+                return False
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            self._downloader.report_warning(u'unable to log in: %s' % compat_str(err))
+            return False
+        return True
+
+    def _confirm_age(self):
+        age_form = {
+                'next_url':     '/',
+                'action_confirm':   'Confirm',
+                }
+        request = compat_urllib_request.Request(self._AGE_URL, compat_urllib_parse.urlencode(age_form))
+        try:
+            self.report_age_confirmation()
+            compat_urllib_request.urlopen(request).read().decode('utf-8')
+        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
+            raise ExtractorError(u'Unable to confirm age: %s' % compat_str(err))
+        return True
+
+    def _real_initialize(self):
+        if self._downloader is None:
+            return
+        if not self._set_language():
+            return
+        if not self._login():
+            return
+        self._confirm_age()
+
+
+class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
+    IE_DESC = u'YouTube.com'
     _VALID_URL = r"""^
                      (
                          (?:https?://)?                                       # http(s):// (optional)
     _VALID_URL = r"""^
                      (
                          (?:https?://)?                                       # http(s):// (optional)
-                         (?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/|
+                         (?:(?:(?:(?:\w+\.)?youtube(?:-nocookie)?\.com/|
                             tube\.majestyc\.net/)                             # the various hostnames, with wildcard subdomains
                          (?:.*?\#/)?                                          # handle anchor (#/) redirect urls
                          (?:                                                  # the various things that can precede the ID:
                              (?:(?:v|embed|e)/)                               # v/ or embed/ or e/
                              |(?:                                             # or the v= param in all its forms
                             tube\.majestyc\.net/)                             # the various hostnames, with wildcard subdomains
                          (?:.*?\#/)?                                          # handle anchor (#/) redirect urls
                          (?:                                                  # the various things that can precede the ID:
                              (?:(?:v|embed|e)/)                               # v/ or embed/ or e/
                              |(?:                                             # or the v= param in all its forms
-                                 (?:watch(?:_popup)?(?:\.php)?)?              # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
+                                 (?:(?:watch|movie)(?:_popup)?(?:\.php)?)?    # preceding watch(_popup|.php) or nothing (like /?v=xxxx)
                                  (?:\?|\#!?)                                  # the params delimiter ? or # or #!
                                  (?:.*?&)?                                    # any other preceding param (like /?s=tuff&v=xxxx)
                                  v=
                              )
                                  (?:\?|\#!?)                                  # the params delimiter ? or # or #!
                                  (?:.*?&)?                                    # any other preceding param (like /?s=tuff&v=xxxx)
                                  v=
                              )
-                         )?                                                   # optional -> youtube.com/xxxx is OK
+                         ))
+                         |youtu\.be/                                          # just youtu.be/xxxx
+                         )
                      )?                                                       # all until now is optional -> you can pass the naked ID
                      )?                                                       # all until now is optional -> you can pass the naked ID
-                     ([0-9A-Za-z_-]+)                                         # here is it! the YouTube video ID
+                     ([0-9A-Za-z_-]{11})                                      # here is it! the YouTube video ID
                      (?(1).+)?                                                # if we found the ID, everything can follow
                      $"""
                      (?(1).+)?                                                # if we found the ID, everything can follow
                      $"""
-    _LANG_URL = r'https://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1'
-    _LOGIN_URL = 'https://accounts.google.com/ServiceLogin'
-    _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'
     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
     _NEXT_URL_RE = r'[\?&]next_url=([^&]+)'
-    _NETRC_MACHINE = 'youtube'
     # Listed in order of quality
     # Listed in order of quality
-    _available_formats = ['38', '37', '46', '22', '45', '35', '44', '34', '18', '43', '6', '5', '17', '13']
-    _available_formats_prefer_free = ['38', '46', '37', '45', '22', '44', '35', '43', '34', '18', '6', '5', '17', '13']
+    _available_formats = ['38', '37', '46', '22', '45', '35', '44', '34', '18', '43', '6', '5', '36', '17', '13',
+                          # Apple HTTP Live Streaming
+                          '96', '95', '94', '93', '92', '132', '151',
+                          # 3D
+                          '85', '84', '102', '83', '101', '82', '100',
+                          # Dash video
+                          '138', '137', '248', '136', '247', '135', '246',
+                          '245', '244', '134', '243', '133', '242', '160',
+                          # Dash audio
+                          '141', '172', '140', '171', '139',
+                          ]
+    _available_formats_prefer_free = ['38', '46', '37', '45', '22', '44', '35', '43', '34', '18', '6', '5', '36', '17', '13',
+                                      # Apple HTTP Live Streaming
+                                      '96', '95', '94', '93', '92', '132', '151',
+                                      # 3D
+                                      '85', '102', '84', '101', '83', '100', '82',
+                                      # Dash video
+                                      '138', '248', '137', '247', '136', '246', '245',
+                                      '244', '135', '243', '134', '242', '133', '160',
+                                      # Dash audio
+                                      '172', '141', '171', '140', '139',
+                                      ]
+    _video_formats_map = {
+        'flv': ['35', '34', '6', '5'],
+        '3gp': ['36', '17', '13'],
+        'mp4': ['38', '37', '22', '18'],
+        'webm': ['46', '45', '44', '43'],
+    }
     _video_extensions = {
         '13': '3gp',
     _video_extensions = {
         '13': '3gp',
-        '17': 'mp4',
+        '17': '3gp',
         '18': 'mp4',
         '22': 'mp4',
         '18': 'mp4',
         '22': 'mp4',
+        '36': '3gp',
         '37': 'mp4',
         '38': 'mp4',
         '43': 'webm',
         '44': 'webm',
         '45': 'webm',
         '46': 'webm',
         '37': 'mp4',
         '38': 'mp4',
         '43': 'webm',
         '44': 'webm',
         '45': 'webm',
         '46': 'webm',
+
+        # 3d videos
+        '82': 'mp4',
+        '83': 'mp4',
+        '84': 'mp4',
+        '85': 'mp4',
+        '100': 'webm',
+        '101': 'webm',
+        '102': 'webm',
+
+        # Apple HTTP Live Streaming
+        '92': 'mp4',
+        '93': 'mp4',
+        '94': 'mp4',
+        '95': 'mp4',
+        '96': 'mp4',
+        '132': 'mp4',
+        '151': 'mp4',
+
+        # Dash mp4
+        '133': 'mp4',
+        '134': 'mp4',
+        '135': 'mp4',
+        '136': 'mp4',
+        '137': 'mp4',
+        '138': 'mp4',
+        '139': 'mp4',
+        '140': 'mp4',
+        '141': 'mp4',
+        '160': 'mp4',
+
+        # Dash webm
+        '171': 'webm',
+        '172': 'webm',
+        '242': 'webm',
+        '243': 'webm',
+        '244': 'webm',
+        '245': 'webm',
+        '246': 'webm',
+        '247': 'webm',
+        '248': 'webm',
     }
     _video_dimensions = {
         '5': '240x400',
     }
     _video_dimensions = {
         '5': '240x400',
@@ -73,13 +249,76 @@ class YoutubeIE(InfoExtractor):
         '22': '720x1280',
         '34': '360x640',
         '35': '480x854',
         '22': '720x1280',
         '34': '360x640',
         '35': '480x854',
+        '36': '240x320',
         '37': '1080x1920',
         '38': '3072x4096',
         '43': '360x640',
         '44': '480x854',
         '45': '720x1280',
         '46': '1080x1920',
         '37': '1080x1920',
         '38': '3072x4096',
         '43': '360x640',
         '44': '480x854',
         '45': '720x1280',
         '46': '1080x1920',
+        '82': '360p',
+        '83': '480p',
+        '84': '720p',
+        '85': '1080p',
+        '92': '240p',
+        '93': '360p',
+        '94': '480p',
+        '95': '720p',
+        '96': '1080p',
+        '100': '360p',
+        '101': '480p',
+        '102': '720p',
+        '132': '240p',
+        '151': '72p',
+        '133': '240p',
+        '134': '360p',
+        '135': '480p',
+        '136': '720p',
+        '137': '1080p',
+        '138': '>1080p',
+        '139': '48k',
+        '140': '128k',
+        '141': '256k',
+        '160': '192p',
+        '171': '128k',
+        '172': '256k',
+        '242': '240p',
+        '243': '360p',
+        '244': '480p',
+        '245': '480p',
+        '246': '480p',
+        '247': '720p',
+        '248': '1080p',
     }
     }
+    _special_itags = {
+        '82': '3D',
+        '83': '3D',
+        '84': '3D',
+        '85': '3D',
+        '100': '3D',
+        '101': '3D',
+        '102': '3D',
+        '133': 'DASH Video',
+        '134': 'DASH Video',
+        '135': 'DASH Video',
+        '136': 'DASH Video',
+        '137': 'DASH Video',
+        '138': 'DASH Video',
+        '139': 'DASH Audio',
+        '140': 'DASH Audio',
+        '141': 'DASH Audio',
+        '160': 'DASH Video',
+        '171': 'DASH Audio',
+        '172': 'DASH Audio',
+        '242': 'DASH Video',
+        '243': 'DASH Video',
+        '244': 'DASH Video',
+        '245': 'DASH Video',
+        '246': 'DASH Video',
+        '247': 'DASH Video',
+        '248': 'DASH Video',
+    }
+
     IE_NAME = u'youtube'
     _TESTS = [
         {
     IE_NAME = u'youtube'
     _TESTS = [
         {
@@ -112,11 +351,38 @@ class YoutubeIE(InfoExtractor):
             u"info_dict": {
                 u"upload_date": u"20120506",
                 u"title": u"Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]",
             u"info_dict": {
                 u"upload_date": u"20120506",
                 u"title": u"Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO]",
-                u"description": u"md5:b085c9804f5ab69f4adea963a2dceb3c",
-                u"uploader": u"IconaPop",
+                u"description": u"md5:3e2666e0a55044490499ea45fe9037b7",
+                u"uploader": u"Icona Pop",
                 u"uploader_id": u"IconaPop"
             }
                 u"uploader_id": u"IconaPop"
             }
-        }
+        },
+        {
+            u"url":  u"https://www.youtube.com/watch?v=07FYdnEawAQ",
+            u"file":  u"07FYdnEawAQ.mp4",
+            u"note": u"Test VEVO video with age protection (#956)",
+            u"info_dict": {
+                u"upload_date": u"20130703",
+                u"title": u"Justin Timberlake - Tunnel Vision (Explicit)",
+                u"description": u"md5:64249768eec3bc4276236606ea996373",
+                u"uploader": u"justintimberlakeVEVO",
+                u"uploader_id": u"justintimberlakeVEVO"
+            }
+        },
+        {
+            u'url': u'https://www.youtube.com/watch?v=TGi3HqYrWHE',
+            u'file': u'TGi3HqYrWHE.mp4',
+            u'note': u'm3u8 video',
+            u'info_dict': {
+                u'title': u'Triathlon - Men - London 2012 Olympic Games',
+                u'description': u'- Men -  TR02 - Triathlon - 07 August 2012 - London 2012 Olympic Games',
+                u'uploader': u'olympic',
+                u'upload_date': u'20120807',
+                u'uploader_id': u'olympic',
+            },
+            u'params': {
+                u'skip_download': True,
+            },
+        },
     ]
 
 
     ]
 
 
@@ -126,14 +392,6 @@ class YoutubeIE(InfoExtractor):
         if YoutubePlaylistIE.suitable(url): return False
         return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
 
         if YoutubePlaylistIE.suitable(url): return False
         return re.match(cls._VALID_URL, url, re.VERBOSE) is not None
 
-    def report_lang(self):
-        """Report attempt to set language."""
-        self.to_screen(u'Setting language')
-
-    def report_login(self):
-        """Report attempt to log in."""
-        self.to_screen(u'Logging in')
-
     def report_video_webpage_download(self, video_id):
         """Report attempt to download video webpage."""
         self.to_screen(u'%s: Downloading video webpage' % video_id)
     def report_video_webpage_download(self, video_id):
         """Report attempt to download video webpage."""
         self.to_screen(u'%s: Downloading video webpage' % video_id)
@@ -142,19 +400,6 @@ class YoutubeIE(InfoExtractor):
         """Report attempt to download video info webpage."""
         self.to_screen(u'%s: Downloading video info webpage' % video_id)
 
         """Report attempt to download video info webpage."""
         self.to_screen(u'%s: Downloading video info webpage' % video_id)
 
-    def report_video_subtitles_download(self, video_id):
-        """Report attempt to download video info webpage."""
-        self.to_screen(u'%s: Checking available subtitles' % video_id)
-
-    def report_video_subtitles_request(self, video_id, sub_lang, format):
-        """Report attempt to download video info webpage."""
-        self.to_screen(u'%s: Downloading video subtitles for %s.%s' % (video_id, sub_lang, format))
-
-    def report_video_subtitles_available(self, video_id, sub_lang_list):
-        """Report available subtitles."""
-        sub_lang = ",".join(list(sub_lang_list.keys()))
-        self.to_screen(u'%s: Available subtitles for video: %s' % (video_id, sub_lang))
-
     def report_information_extraction(self, video_id):
         """Report attempt to extract video information."""
         self.to_screen(u'%s: Extracting video information' % video_id)
     def report_information_extraction(self, video_id):
         """Report attempt to extract video information."""
         self.to_screen(u'%s: Extracting video information' % video_id)
@@ -170,229 +415,124 @@ class YoutubeIE(InfoExtractor):
     def _decrypt_signature(self, s):
         """Turn the encrypted s field into a working signature"""
 
     def _decrypt_signature(self, s):
         """Turn the encrypted s field into a working signature"""
 
-        if len(s) == 88:
-            return s[48] + s[81:67:-1] + s[82] + s[66:62:-1] + s[85] + s[61:48:-1] + s[67] + s[47:12:-1] + s[3] + s[11:3:-1] + s[2] + s[12]
+        if len(s) == 92:
+            return s[25] + s[3:25] + s[0] + s[26:42] + s[79] + s[43:79] + s[91] + s[80:83]
+        elif len(s) == 90:
+            return s[25] + s[3:25] + s[2] + s[26:40] + s[77] + s[41:77] + s[89] + s[78:81]
+        elif len(s) == 89:
+            return s[84:78:-1] + s[87] + s[77:60:-1] + s[0] + s[59:3:-1]
+        elif len(s) == 88:
+            return s[7:28] + s[87] + s[29:45] + s[55] + s[46:55] + s[2] + s[56:87] + s[28]
         elif len(s) == 87:
         elif len(s) == 87:
-            return s[62] + s[82:62:-1] + s[83] + s[61:52:-1] + s[0] + s[51:2:-1]
+            return s[6:27] + s[4] + s[28:39] + s[27] + s[40:59] + s[2] + s[60:]
         elif len(s) == 86:
         elif len(s) == 86:
-            return s[2:63] + s[82] + s[64:82] + s[63]
+            return s[5:34] + s[0] + s[35:38] + s[3] + s[39:45] + s[38] + s[46:53] + s[73] + s[54:73] + s[85] + s[74:85] + s[53]
         elif len(s) == 85:
         elif len(s) == 85:
-            return s[76] + s[82:76:-1] + s[83] + s[75:60:-1] + s[0] + s[59:50:-1] + s[1] + s[49:2:-1]
+            return s[40] + s[82:43:-1] + s[22] + s[42:40:-1] + s[83] + s[39:22:-1] + s[0] + s[21:2:-1]
         elif len(s) == 84:
         elif len(s) == 84:
-            return s[83:36:-1] + s[2] + s[35:26:-1] + s[3] + s[25:3:-1] + s[26]
+            return s[81:36:-1] + s[0] + s[35:2:-1]
         elif len(s) == 83:
         elif len(s) == 83:
-            return s[52] + s[81:55:-1] + s[2] + s[54:52:-1] + s[82] + s[51:36:-1] + s[55] + s[35:2:-1] + s[36]
+            return s[81:64:-1] + s[82] + s[63:52:-1] + s[45] + s[51:45:-1] + s[1] + s[44:1:-1] + s[0]
         elif len(s) == 82:
         elif len(s) == 82:
-            return s[36] + s[79:67:-1] + s[81] + s[66:40:-1] + s[33] + s[39:36:-1] + s[40] + s[35] + s[0] + s[67] + s[32:0:-1] + s[34]
+            return s[80:73:-1] + s[81] + s[72:54:-1] + s[2] + s[53:43:-1] + s[0] + s[42:2:-1] + s[43] + s[1] + s[54]
+        elif len(s) == 81:
+            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]
+        elif len(s) == 80:
+            return s[1:19] + s[0] + s[20:68] + s[19] + s[69:80]
+        elif len(s) == 79:
+            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]
 
         else:
             raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
 
 
         else:
             raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
 
+    def _decrypt_signature_age_gate(self, s):
+        # The videos with age protection use another player, so the algorithms
+        # can be different.
+        if len(s) == 86:
+            return s[2:63] + s[82] + s[64:82] + s[63]
+        else:
+            # Fallback to the other algortihms
+            return self._decrypt_signature(s)
+
     def _get_available_subtitles(self, video_id):
     def _get_available_subtitles(self, video_id):
-        self.report_video_subtitles_download(video_id)
-        request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
         try:
         try:
-            sub_list = compat_urllib_request.urlopen(request).read().decode('utf-8')
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            return (u'unable to download video subtitles: %s' % compat_str(err), None)
-        sub_lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list)
-        sub_lang_list = dict((l[1], l[0]) for l in sub_lang_list)
+            sub_list = self._download_webpage(
+                'http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id,
+                video_id, note=False)
+        except ExtractorError as err:
+            self._downloader.report_warning(u'unable to download video subtitles: %s' % compat_str(err))
+            return {}
+        lang_list = re.findall(r'name="([^"]*)"[^>]+lang_code="([\w\-]+)"', sub_list)
+
+        sub_lang_list = {}
+        for l in lang_list:
+            lang = l[1]
+            params = compat_urllib_parse.urlencode({
+                'lang': lang,
+                'v': video_id,
+                'fmt': self._downloader.params.get('subtitlesformat'),
+            })
+            url = u'http://www.youtube.com/api/timedtext?' + params
+            sub_lang_list[lang] = url
         if not sub_lang_list:
         if not sub_lang_list:
-            return (u'video doesn\'t have subtitles', None)
+            self._downloader.report_warning(u'video doesn\'t have subtitles')
+            return {}
         return sub_lang_list
 
         return sub_lang_list
 
-    def _list_available_subtitles(self, video_id):
-        sub_lang_list = self._get_available_subtitles(video_id)
-        self.report_video_subtitles_available(video_id, sub_lang_list)
-
-    def _request_subtitle(self, sub_lang, sub_name, video_id, format):
-        """
-        Return tuple:
-        (error_message, sub_lang, sub)
-        """
-        self.report_video_subtitles_request(video_id, sub_lang, format)
-        params = compat_urllib_parse.urlencode({
-            'lang': sub_lang,
-            'name': sub_name,
-            'v': video_id,
-            'fmt': format,
-        })
-        url = 'http://www.youtube.com/api/timedtext?' + params
-        try:
-            sub = compat_urllib_request.urlopen(url).read().decode('utf-8')
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            return (u'unable to download video subtitles: %s' % compat_str(err), None, None)
-        if not sub:
-            return (u'Did not fetch video subtitles', None, None)
-        return (None, sub_lang, sub)
-
-    def _request_automatic_caption(self, video_id, webpage):
+    def _get_available_automatic_caption(self, video_id, webpage):
         """We need the webpage for getting the captions url, pass it as an
            argument to speed up the process."""
         """We need the webpage for getting the captions url, pass it as an
            argument to speed up the process."""
-        sub_lang = self._downloader.params.get('subtitleslang') or 'en'
         sub_format = self._downloader.params.get('subtitlesformat')
         self.to_screen(u'%s: Looking for automatic captions' % video_id)
         mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
         sub_format = self._downloader.params.get('subtitlesformat')
         self.to_screen(u'%s: Looking for automatic captions' % video_id)
         mobj = re.search(r';ytplayer.config = ({.*?});', webpage)
-        err_msg = u'Couldn\'t find automatic captions for "%s"' % sub_lang
+        err_msg = u'Couldn\'t find automatic captions for %s' % video_id
         if mobj is None:
         if mobj is None:
-            return [(err_msg, None, None)]
+            self._downloader.report_warning(err_msg)
+            return {}
         player_config = json.loads(mobj.group(1))
         try:
             args = player_config[u'args']
             caption_url = args[u'ttsurl']
             timestamp = args[u'timestamp']
         player_config = json.loads(mobj.group(1))
         try:
             args = player_config[u'args']
             caption_url = args[u'ttsurl']
             timestamp = args[u'timestamp']
-            params = compat_urllib_parse.urlencode({
-                'lang': 'en',
-                'tlang': sub_lang,
-                'fmt': sub_format,
-                'ts': timestamp,
-                'kind': 'asr',
+            # We get the available subtitles
+            list_params = compat_urllib_parse.urlencode({
+                'type': 'list',
+                'tlangs': 1,
+                'asrs': 1,
             })
             })
-            subtitles_url = caption_url + '&' + params
-            sub = self._download_webpage(subtitles_url, video_id, u'Downloading automatic captions')
-            return [(None, sub_lang, sub)]
-        except KeyError:
-            return [(err_msg, None, None)]
-
-    def _extract_subtitle(self, video_id):
-        """
-        Return a list with a tuple:
-        [(error_message, sub_lang, sub)]
-        """
-        sub_lang_list = self._get_available_subtitles(video_id)
-        sub_format = self._downloader.params.get('subtitlesformat')
-        if  isinstance(sub_lang_list,tuple): #There was some error, it didn't get the available subtitles
-            return [(sub_lang_list[0], None, None)]
-        if self._downloader.params.get('subtitleslang', False):
-            sub_lang = self._downloader.params.get('subtitleslang')
-        elif 'en' in sub_lang_list:
-            sub_lang = 'en'
-        else:
-            sub_lang = list(sub_lang_list.keys())[0]
-        if not sub_lang in sub_lang_list:
-            return [(u'no closed captions found in the specified language "%s"' % sub_lang, None, None)]
-
-        subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format)
-        return [subtitle]
-
-    def _extract_all_subtitles(self, video_id):
-        sub_lang_list = self._get_available_subtitles(video_id)
-        sub_format = self._downloader.params.get('subtitlesformat')
-        if  isinstance(sub_lang_list,tuple): #There was some error, it didn't get the available subtitles
-            return [(sub_lang_list[0], None, None)]
-        subtitles = []
-        for sub_lang in sub_lang_list:
-            subtitle = self._request_subtitle(sub_lang, sub_lang_list[sub_lang].encode('utf-8'), video_id, sub_format)
-            subtitles.append(subtitle)
-        return subtitles
+            list_url = caption_url + '&' + list_params
+            list_page = self._download_webpage(list_url, video_id)
+            caption_list = xml.etree.ElementTree.fromstring(list_page.encode('utf-8'))
+            original_lang_node = caption_list.find('track')
+            if original_lang_node.attrib.get('kind') != 'asr' :
+                self._downloader.report_warning(u'Video doesn\'t have automatic captions')
+                return {}
+            original_lang = original_lang_node.attrib['lang_code']
+
+            sub_lang_list = {}
+            for lang_node in caption_list.findall('target'):
+                sub_lang = lang_node.attrib['lang_code']
+                params = compat_urllib_parse.urlencode({
+                    'lang': original_lang,
+                    'tlang': sub_lang,
+                    'fmt': sub_format,
+                    'ts': timestamp,
+                    'kind': 'asr',
+                })
+                sub_lang_list[sub_lang] = caption_url + '&' + params
+            return sub_lang_list
+        # An extractor error can be raise by the download process if there are
+        # no automatic captions but there are subtitles
+        except (KeyError, ExtractorError):
+            self._downloader.report_warning(err_msg)
+            return {}
 
     def _print_formats(self, formats):
         print('Available formats:')
         for x in formats:
 
     def _print_formats(self, formats):
         print('Available formats:')
         for x in formats:
-            print('%s\t:\t%s\t[%s]' %(x, self._video_extensions.get(x, 'flv'), self._video_dimensions.get(x, '???')))
-
-    def _real_initialize(self):
-        if self._downloader is None:
-            return
-
-        username = None
-        password = None
-        downloader_params = self._downloader.params
-
-        # Attempt to use provided username and password or .netrc data
-        if downloader_params.get('username', None) is not None:
-            username = downloader_params['username']
-            password = downloader_params['password']
-        elif downloader_params.get('usenetrc', False):
-            try:
-                info = netrc.netrc().authenticators(self._NETRC_MACHINE)
-                if info is not None:
-                    username = info[0]
-                    password = info[2]
-                else:
-                    raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE)
-            except (IOError, netrc.NetrcParseError) as err:
-                self._downloader.report_warning(u'parsing .netrc: %s' % compat_str(err))
-                return
-
-        # Set language
-        request = compat_urllib_request.Request(self._LANG_URL)
-        try:
-            self.report_lang()
-            compat_urllib_request.urlopen(request).read()
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            self._downloader.report_warning(u'unable to set language: %s' % compat_str(err))
-            return
-
-        # No authentication to be performed
-        if username is None:
-            return
-
-        request = compat_urllib_request.Request(self._LOGIN_URL)
-        try:
-            login_page = compat_urllib_request.urlopen(request).read().decode('utf-8')
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            self._downloader.report_warning(u'unable to fetch login page: %s' % compat_str(err))
-            return
-
-        galx = None
-        dsh = None
-        match = re.search(re.compile(r'<input.+?name="GALX".+?value="(.+?)"', re.DOTALL), login_page)
-        if match:
-          galx = match.group(1)
-
-        match = re.search(re.compile(r'<input.+?name="dsh".+?value="(.+?)"', re.DOTALL), login_page)
-        if match:
-          dsh = match.group(1)
-
-        # Log in
-        login_form_strs = {
-                u'continue': u'https://www.youtube.com/signin?action_handle_signin=true&feature=sign_in_button&hl=en_US&nomobiletemp=1',
-                u'Email': username,
-                u'GALX': galx,
-                u'Passwd': password,
-                u'PersistentCookie': u'yes',
-                u'_utf8': u'霱',
-                u'bgresponse': u'js_disabled',
-                u'checkConnection': u'',
-                u'checkedDomains': u'youtube',
-                u'dnConn': u'',
-                u'dsh': dsh,
-                u'pstMsg': u'0',
-                u'rmShown': u'1',
-                u'secTok': u'',
-                u'signIn': u'Sign in',
-                u'timeStmp': u'',
-                u'service': u'youtube',
-                u'uilel': u'3',
-                u'hl': u'en_US',
-        }
-        # Convert to UTF-8 *before* urlencode because Python 2.x's urlencode
-        # chokes on unicode
-        login_form = dict((k.encode('utf-8'), v.encode('utf-8')) for k,v in login_form_strs.items())
-        login_data = compat_urllib_parse.urlencode(login_form).encode('ascii')
-        request = compat_urllib_request.Request(self._LOGIN_URL, login_data)
-        try:
-            self.report_login()
-            login_results = compat_urllib_request.urlopen(request).read().decode('utf-8')
-            if re.search(r'(?i)<form[^>]* id="gaia_loginform"', login_results) is not None:
-                self._downloader.report_warning(u'unable to log in: bad username or password')
-                return
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            self._downloader.report_warning(u'unable to log in: %s' % compat_str(err))
-            return
-
-        # Confirm age
-        age_form = {
-                'next_url':     '/',
-                'action_confirm':   'Confirm',
-                }
-        request = compat_urllib_request.Request(self._AGE_URL, compat_urllib_parse.urlencode(age_form))
-        try:
-            self.report_age_confirmation()
-            compat_urllib_request.urlopen(request).read().decode('utf-8')
-        except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
-            raise ExtractorError(u'Unable to confirm age: %s' % compat_str(err))
+            print('%s\t:\t%s\t[%s]%s' %(x, self._video_extensions.get(x, 'flv'),
+                                        self._video_dimensions.get(x, '???'),
+                                        ' ('+self._special_itags[x]+')' if x in self._special_itags else ''))
 
     def _extract_id(self, url):
         mobj = re.match(self._VALID_URL, url, re.VERBOSE)
 
     def _extract_id(self, url):
         mobj = re.match(self._VALID_URL, url, re.VERBOSE)
@@ -401,6 +541,69 @@ class YoutubeIE(InfoExtractor):
         video_id = mobj.group(2)
         return video_id
 
         video_id = mobj.group(2)
         return video_id
 
+    def _get_video_url_list(self, url_map):
+        """
+        Transform a dictionary in the format {itag:url} to a list of (itag, url)
+        with the requested formats.
+        """
+        req_format = self._downloader.params.get('format', None)
+        format_limit = self._downloader.params.get('format_limit', None)
+        available_formats = self._available_formats_prefer_free if self._downloader.params.get('prefer_free_formats', False) else self._available_formats
+        if format_limit is not None and format_limit in available_formats:
+            format_list = available_formats[available_formats.index(format_limit):]
+        else:
+            format_list = available_formats
+        existing_formats = [x for x in format_list if x in url_map]
+        if len(existing_formats) == 0:
+            raise ExtractorError(u'no known formats available for video')
+        if self._downloader.params.get('listformats', None):
+            self._print_formats(existing_formats)
+            return
+        if req_format is None or req_format == 'best':
+            video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
+        elif req_format == 'worst':
+            video_url_list = [(existing_formats[-1], url_map[existing_formats[-1]])] # worst quality
+        elif req_format in ('-1', 'all'):
+            video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
+        else:
+            # Specific formats. We pick the first in a slash-delimeted sequence.
+            # Format can be specified as itag or 'mp4' or 'flv' etc. We pick the highest quality
+            # available in the specified format. For example,
+            # if '1/2/3/4' is requested and '2' and '4' are available, we pick '2'.
+            # if '1/mp4/3/4' is requested and '1' and '5' (is a mp4) are available, we pick '1'.
+            # if '1/mp4/3/4' is requested and '4' and '5' (is a mp4) are available, we pick '5'.
+            req_formats = req_format.split('/')
+            video_url_list = None
+            for rf in req_formats:
+                if rf in url_map:
+                    video_url_list = [(rf, url_map[rf])]
+                    break
+                if rf in self._video_formats_map:
+                    for srf in self._video_formats_map[rf]:
+                        if srf in url_map:
+                            video_url_list = [(srf, url_map[srf])]
+                            break
+                    else:
+                        continue
+                    break
+            if video_url_list is None:
+                raise ExtractorError(u'requested format not available')
+        return video_url_list
+
+    def _extract_from_m3u8(self, manifest_url, video_id):
+        url_map = {}
+        def _get_urls(_manifest):
+            lines = _manifest.split('\n')
+            urls = filter(lambda l: l and not l.startswith('#'),
+                            lines)
+            return urls
+        manifest = self._download_webpage(manifest_url, video_id, u'Downloading formats manifest')
+        formats_urls = _get_urls(manifest)
+        for format_url in formats_urls:
+            itag = self._search_regex(r'itag/(\d+?)/', format_url, 'itag')
+            url_map[itag] = format_url
+        return url_map
+
     def _real_extract(self, url):
         if re.match(r'(?:https?://)?[^/]+/watch\?feature=[a-z_]+$', url):
             self._downloader.report_warning(u'Did you forget to quote the URL? Remember that & is a meta-character in most shells, so you want to put the URL in quotes, like  youtube-dl \'http://www.youtube.com/watch?feature=foo&v=BaW_jenozKc\' (or simply  youtube-dl BaW_jenozKc  ).')
     def _real_extract(self, url):
         if re.match(r'(?:https?://)?[^/]+/watch\?feature=[a-z_]+$', url):
             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  ).')
@@ -431,18 +634,38 @@ class YoutubeIE(InfoExtractor):
 
         # Get video info
         self.report_video_info_webpage_download(video_id)
 
         # Get video info
         self.report_video_info_webpage_download(video_id)
-        for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']:
-            video_info_url = ('https://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
-                    % (video_id, el_type))
+        if re.search(r'player-age-gate-content">', video_webpage) is not None:
+            self.report_age_confirmation()
+            age_gate = True
+            # We simulate the access to the video from www.youtube.com/v/{video_id}
+            # this can be viewed without login into Youtube
+            data = compat_urllib_parse.urlencode({'video_id': video_id,
+                                                  'el': 'embedded',
+                                                  'gl': 'US',
+                                                  'hl': 'en',
+                                                  'eurl': 'https://youtube.googleapis.com/v/' + video_id,
+                                                  'asv': 3,
+                                                  'sts':'1588',
+                                                  })
+            video_info_url = 'https://www.youtube.com/get_video_info?' + data
             video_info_webpage = self._download_webpage(video_info_url, video_id,
                                     note=False,
                                     errnote='unable to download video info webpage')
             video_info = compat_parse_qs(video_info_webpage)
             video_info_webpage = self._download_webpage(video_info_url, video_id,
                                     note=False,
                                     errnote='unable to download video info webpage')
             video_info = compat_parse_qs(video_info_webpage)
-            if 'token' in video_info:
-                break
+        else:
+            age_gate = False
+            for el_type in ['&el=embedded', '&el=detailpage', '&el=vevo', '']:
+                video_info_url = ('https://www.youtube.com/get_video_info?&video_id=%s%s&ps=default&eurl=&gl=US&hl=en'
+                        % (video_id, el_type))
+                video_info_webpage = self._download_webpage(video_info_url, video_id,
+                                        note=False,
+                                        errnote='unable to download video info webpage')
+                video_info = compat_parse_qs(video_info_webpage)
+                if 'token' in video_info:
+                    break
         if 'token' not in video_info:
             if 'reason' in video_info:
         if 'token' not in video_info:
             if 'reason' in video_info:
-                raise ExtractorError(u'YouTube said: %s' % video_info['reason'][0])
+                raise ExtractorError(u'YouTube said: %s' % video_info['reason'][0], expected=True)
             else:
                 raise ExtractorError(u'"token" parameter not in video info for unknown reason')
 
             else:
                 raise ExtractorError(u'"token" parameter not in video info for unknown reason')
 
@@ -472,7 +695,12 @@ class YoutubeIE(InfoExtractor):
         video_title = compat_urllib_parse.unquote_plus(video_info['title'][0])
 
         # thumbnail image
         video_title = compat_urllib_parse.unquote_plus(video_info['title'][0])
 
         # thumbnail image
-        if 'thumbnail_url' not in video_info:
+        # We try first to get a high quality image:
+        m_thumb = re.search(r'<span itemprop="thumbnail".*?href="(.*?)">',
+                            video_webpage, re.DOTALL)
+        if m_thumb is not None:
+            video_thumbnail = m_thumb.group(1)
+        elif 'thumbnail_url' not in video_info:
             self._downloader.report_warning(u'unable to extract video thumbnail')
             video_thumbnail = ''
         else:   # don't panic if we can't find it
             self._downloader.report_warning(u'unable to extract video thumbnail')
             video_thumbnail = ''
         else:   # don't panic if we can't find it
@@ -497,30 +725,10 @@ class YoutubeIE(InfoExtractor):
                 video_description = u''
 
         # subtitles
                 video_description = u''
 
         # subtitles
-        video_subtitles = None
-
-        if self._downloader.params.get('writesubtitles', False):
-            video_subtitles = self._extract_subtitle(video_id)
-            if video_subtitles:
-                (sub_error, sub_lang, sub) = video_subtitles[0]
-                if sub_error:
-                    self._downloader.report_warning(sub_error)
-        
-        if self._downloader.params.get('writeautomaticsub', False):
-            video_subtitles = self._request_automatic_caption(video_id, video_webpage)
-            (sub_error, sub_lang, sub) = video_subtitles[0]
-            if sub_error:
-                self._downloader.report_warning(sub_error)
-
-        if self._downloader.params.get('allsubtitles', False):
-            video_subtitles = self._extract_all_subtitles(video_id)
-            for video_subtitle in video_subtitles:
-                (sub_error, sub_lang, sub) = video_subtitle
-                if sub_error:
-                    self._downloader.report_warning(sub_error)
+        video_subtitles = self.extract_subtitles(video_id, video_webpage)
 
         if self._downloader.params.get('listsubtitles', False):
 
         if self._downloader.params.get('listsubtitles', False):
-            self._list_available_subtitles(video_id)
+            self._list_available_subtitles(video_id, video_webpage)
             return
 
         if 'length_seconds' not in video_info:
             return
 
         if 'length_seconds' not in video_info:
@@ -530,7 +738,6 @@ class YoutubeIE(InfoExtractor):
             video_duration = compat_urllib_parse.unquote_plus(video_info['length_seconds'][0])
 
         # Decide which formats to download
             video_duration = compat_urllib_parse.unquote_plus(video_info['length_seconds'][0])
 
         # Decide which formats to download
-        req_format = self._downloader.params.get('format', None)
 
         try:
             mobj = re.search(r';ytplayer.config = ({.*?});', video_webpage)
 
         try:
             mobj = re.search(r';ytplayer.config = ({.*?});', video_webpage)
@@ -544,6 +751,17 @@ class YoutubeIE(InfoExtractor):
             if m_s is not None:
                 self.to_screen(u'%s: Encrypted signatures detected.' % video_id)
                 video_info['url_encoded_fmt_stream_map'] = [args['url_encoded_fmt_stream_map']]
             if m_s is not None:
                 self.to_screen(u'%s: Encrypted signatures detected.' % video_id)
                 video_info['url_encoded_fmt_stream_map'] = [args['url_encoded_fmt_stream_map']]
+            m_s = re.search(r'[&,]s=', args.get('adaptive_fmts', u''))
+            if m_s is not None:
+                if 'url_encoded_fmt_stream_map' in video_info:
+                    video_info['url_encoded_fmt_stream_map'][0] += ',' + args['adaptive_fmts']
+                else:
+                    video_info['url_encoded_fmt_stream_map'] = [args['adaptive_fmts']]
+            elif 'adaptive_fmts' in video_info:
+                if 'url_encoded_fmt_stream_map' in video_info:
+                    video_info['url_encoded_fmt_stream_map'][0] += ',' + video_info['adaptive_fmts'][0]
+                else:
+                    video_info['url_encoded_fmt_stream_map'] = video_info['adaptive_fmts']
         except ValueError:
             pass
 
         except ValueError:
             pass
 
@@ -551,6 +769,8 @@ class YoutubeIE(InfoExtractor):
             self.report_rtmp_download()
             video_url_list = [(None, video_info['conn'][0])]
         elif 'url_encoded_fmt_stream_map' in video_info and len(video_info['url_encoded_fmt_stream_map']) >= 1:
             self.report_rtmp_download()
             video_url_list = [(None, video_info['conn'][0])]
         elif 'url_encoded_fmt_stream_map' in video_info and len(video_info['url_encoded_fmt_stream_map']) >= 1:
+            if 'rtmpe%3Dyes' in video_info['url_encoded_fmt_stream_map'][0]:
+                raise ExtractorError('rtmpe downloads are not supported, see https://github.com/rg3/youtube-dl/issues/343 for more information.', expected=True)
             url_map = {}
             for url_data_str in video_info['url_encoded_fmt_stream_map'][0].split(','):
                 url_data = compat_parse_qs(url_data_str)
             url_map = {}
             for url_data_str in video_info['url_encoded_fmt_stream_map'][0].split(','):
                 url_data = compat_parse_qs(url_data_str)
@@ -561,45 +781,36 @@ class YoutubeIE(InfoExtractor):
                     elif 's' in url_data:
                         if self._downloader.params.get('verbose'):
                             s = url_data['s'][0]
                     elif 's' in url_data:
                         if self._downloader.params.get('verbose'):
                             s = url_data['s'][0]
-                            player = self._search_regex(r'html5player-(.+?)\.js', video_webpage,
-                                'html5 player', fatal=False)
-                            self.to_screen('encrypted signature length %d (%d.%d), itag %s, html5 player %s' %
-                                (len(s), len(s.split('.')[0]), len(s.split('.')[1]), url_data['itag'][0], player))
-                        signature = self._decrypt_signature(url_data['s'][0])
+                            if age_gate:
+                                player_version = self._search_regex(r'ad3-(.+?)\.swf',
+                                    video_info['ad3_module'][0] if 'ad3_module' in video_info else 'NOT FOUND',
+                                    'flash player', fatal=False)
+                                player = 'flash player %s' % player_version
+                            else:
+                                player = u'html5 player %s' % self._search_regex(r'html5player-(.+?)\.js', video_webpage,
+                                    'html5 player', fatal=False)
+                            parts_sizes = u'.'.join(compat_str(len(part)) for part in s.split('.'))
+                            self.to_screen(u'encrypted signature length %d (%s), itag %s, %s' %
+                                (len(s), parts_sizes, url_data['itag'][0], player))
+                        encrypted_sig = url_data['s'][0]
+                        if age_gate:
+                            signature = self._decrypt_signature_age_gate(encrypted_sig)
+                        else:
+                            signature = self._decrypt_signature(encrypted_sig)
                         url += '&signature=' + signature
                     if 'ratebypass' not in url:
                         url += '&ratebypass=yes'
                     url_map[url_data['itag'][0]] = url
                         url += '&signature=' + signature
                     if 'ratebypass' not in url:
                         url += '&ratebypass=yes'
                     url_map[url_data['itag'][0]] = url
-
-            format_limit = self._downloader.params.get('format_limit', None)
-            available_formats = self._available_formats_prefer_free if self._downloader.params.get('prefer_free_formats', False) else self._available_formats
-            if format_limit is not None and format_limit in available_formats:
-                format_list = available_formats[available_formats.index(format_limit):]
-            else:
-                format_list = available_formats
-            existing_formats = [x for x in format_list if x in url_map]
-            if len(existing_formats) == 0:
-                raise ExtractorError(u'no known formats available for video')
-            if self._downloader.params.get('listformats', None):
-                self._print_formats(existing_formats)
+            video_url_list = self._get_video_url_list(url_map)
+            if not video_url_list:
                 return
                 return
-            if req_format is None or req_format == 'best':
-                video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
-            elif req_format == 'worst':
-                video_url_list = [(existing_formats[len(existing_formats)-1], url_map[existing_formats[len(existing_formats)-1]])] # worst quality
-            elif req_format in ('-1', 'all'):
-                video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
-            else:
-                # Specific formats. We pick the first in a slash-delimeted sequence.
-                # For example, if '1/2/3/4' is requested and '2' and '4' are available, we pick '2'.
-                req_formats = req_format.split('/')
-                video_url_list = None
-                for rf in req_formats:
-                    if rf in url_map:
-                        video_url_list = [(rf, url_map[rf])]
-                        break
-                if video_url_list is None:
-                    raise ExtractorError(u'requested format not available')
+        elif video_info.get('hlsvp'):
+            manifest_url = video_info['hlsvp'][0]
+            url_map = self._extract_from_m3u8(manifest_url, video_id)
+            video_url_list = self._get_video_url_list(url_map)
+            if not video_url_list:
+                return
+
         else:
             raise ExtractorError(u'no conn or url_encoded_fmt_stream_map information found in video info')
 
         else:
             raise ExtractorError(u'no conn or url_encoded_fmt_stream_map information found in video info')
 
@@ -608,8 +819,9 @@ class YoutubeIE(InfoExtractor):
             # Extension
             video_extension = self._video_extensions.get(format_param, 'flv')
 
             # Extension
             video_extension = self._video_extensions.get(format_param, 'flv')
 
-            video_format = '{0} - {1}'.format(format_param if format_param else video_extension,
-                                              self._video_dimensions.get(format_param, '???'))
+            video_format = '{0} - {1}{2}'.format(format_param if format_param else video_extension,
+                                              self._video_dimensions.get(format_param, '???'),
+                                              ' ('+self._special_itags[format_param]+')' if format_param in self._special_itags else '')
 
             results.append({
                 'id':       video_id,
 
             results.append({
                 'id':       video_id,
@@ -629,8 +841,7 @@ class YoutubeIE(InfoExtractor):
         return results
 
 class YoutubePlaylistIE(InfoExtractor):
         return results
 
 class YoutubePlaylistIE(InfoExtractor):
-    """Information Extractor for YouTube playlists."""
-
+    IE_DESC = u'YouTube.com playlists'
     _VALID_URL = r"""(?:
                         (?:https?://)?
                         (?:\w+\.)?
     _VALID_URL = r"""(?:
                         (?:https?://)?
                         (?:\w+\.)?
@@ -640,10 +851,10 @@ class YoutubePlaylistIE(InfoExtractor):
                            \? (?:.*?&)*? (?:p|a|list)=
                         |  p/
                         )
                            \? (?:.*?&)*? (?:p|a|list)=
                         |  p/
                         )
-                        ((?:PL|EC|UU)?[0-9A-Za-z-_]{10,})
+                        ((?:PL|EC|UU|FL)?[0-9A-Za-z-_]{10,})
                         .*
                      |
                         .*
                      |
-                        ((?:PL|EC|UU)[0-9A-Za-z-_]{10,})
+                        ((?:PL|EC|UU|FL)[0-9A-Za-z-_]{10,})
                      )"""
     _TEMPLATE_URL = 'https://gdata.youtube.com/feeds/api/playlists/%s?max-results=%i&start-index=%i&v=2&alt=json&safeSearch=none'
     _MAX_RESULTS = 50
                      )"""
     _TEMPLATE_URL = 'https://gdata.youtube.com/feeds/api/playlists/%s?max-results=%i&start-index=%i&v=2&alt=json&safeSearch=none'
     _MAX_RESULTS = 50
@@ -662,11 +873,14 @@ class YoutubePlaylistIE(InfoExtractor):
 
         # Download playlist videos from API
         playlist_id = mobj.group(1) or mobj.group(2)
 
         # Download playlist videos from API
         playlist_id = mobj.group(1) or mobj.group(2)
-        page_num = 1
         videos = []
 
         videos = []
 
-        while True:
-            url = self._TEMPLATE_URL % (playlist_id, self._MAX_RESULTS, self._MAX_RESULTS * (page_num - 1) + 1)
+        for page_num in itertools.count(1):
+            start_index = self._MAX_RESULTS * (page_num - 1) + 1
+            if start_index >= 1000:
+                self._downloader.report_warning(u'Max number of results reached')
+                break
+            url = self._TEMPLATE_URL % (playlist_id, self._MAX_RESULTS, start_index)
             page = self._download_webpage(url, playlist_id, u'Downloading page #%s' % page_num)
 
             try:
             page = self._download_webpage(url, playlist_id, u'Downloading page #%s' % page_num)
 
             try:
@@ -683,26 +897,24 @@ class YoutubePlaylistIE(InfoExtractor):
 
             for entry in response['feed']['entry']:
                 index = entry['yt$position']['$t']
 
             for entry in response['feed']['entry']:
                 index = entry['yt$position']['$t']
-                if 'media$group' in entry and 'media$player' in entry['media$group']:
-                    videos.append((index, entry['media$group']['media$player']['url']))
-
-            if len(response['feed']['entry']) < self._MAX_RESULTS:
-                break
-            page_num += 1
+                if 'media$group' in entry and 'yt$videoid' in entry['media$group']:
+                    videos.append((
+                        index,
+                        'https://www.youtube.com/watch?v=' + entry['media$group']['yt$videoid']['$t']
+                    ))
 
         videos = [v[1] for v in sorted(videos)]
 
 
         videos = [v[1] for v in sorted(videos)]
 
-        url_results = [self.url_result(url, 'Youtube') for url in videos]
+        url_results = [self.url_result(vurl, 'Youtube') for vurl in videos]
         return [self.playlist_result(url_results, playlist_id, playlist_title)]
 
 
 class YoutubeChannelIE(InfoExtractor):
         return [self.playlist_result(url_results, playlist_id, playlist_title)]
 
 
 class YoutubeChannelIE(InfoExtractor):
-    """Information Extractor for YouTube channels."""
-
+    IE_DESC = u'YouTube.com channels'
     _VALID_URL = r"^(?:https?://)?(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/([0-9A-Za-z_-]+)"
     _TEMPLATE_URL = 'http://www.youtube.com/channel/%s/videos?sort=da&flow=list&view=0&page=%s&gl=US&hl=en'
     _MORE_PAGES_INDICATOR = 'yt-uix-load-more'
     _VALID_URL = r"^(?:https?://)?(?:youtu\.be|(?:\w+\.)?youtube(?:-nocookie)?\.com)/channel/([0-9A-Za-z_-]+)"
     _TEMPLATE_URL = 'http://www.youtube.com/channel/%s/videos?sort=da&flow=list&view=0&page=%s&gl=US&hl=en'
     _MORE_PAGES_INDICATOR = 'yt-uix-load-more'
-    _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'
+    _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'
     IE_NAME = u'youtube:channel'
 
     def extract_videos_from_page(self, page):
     IE_NAME = u'youtube:channel'
 
     def extract_videos_from_page(self, page):
@@ -733,9 +945,7 @@ class YoutubeChannelIE(InfoExtractor):
 
         # Download any subsequent channel pages using the json-based channel_ajax query
         if self._MORE_PAGES_INDICATOR in page:
 
         # Download any subsequent channel pages using the json-based channel_ajax query
         if self._MORE_PAGES_INDICATOR in page:
-            while True:
-                pagenum = pagenum + 1
-
+            for pagenum in itertools.count(1):
                 url = self._MORE_PAGES_URL % (pagenum, channel_id)
                 page = self._download_webpage(url, channel_id,
                                               u'Downloading page #%s' % pagenum)
                 url = self._MORE_PAGES_URL % (pagenum, channel_id)
                 page = self._download_webpage(url, channel_id,
                                               u'Downloading page #%s' % pagenum)
@@ -751,20 +961,26 @@ class YoutubeChannelIE(InfoExtractor):
         self._downloader.to_screen(u'[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
 
         urls = ['http://www.youtube.com/watch?v=%s' % id for id in video_ids]
         self._downloader.to_screen(u'[youtube] Channel %s: Found %i videos' % (channel_id, len(video_ids)))
 
         urls = ['http://www.youtube.com/watch?v=%s' % id for id in video_ids]
-        url_entries = [self.url_result(url, 'Youtube') for url in urls]
+        url_entries = [self.url_result(eurl, 'Youtube') for eurl in urls]
         return [self.playlist_result(url_entries, channel_id)]
 
 
 class YoutubeUserIE(InfoExtractor):
         return [self.playlist_result(url_entries, channel_id)]
 
 
 class YoutubeUserIE(InfoExtractor):
-    """Information Extractor for YouTube users."""
-
-    _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/user/)|ytuser:)([A-Za-z0-9_-]+)'
+    IE_DESC = u'YouTube.com user videos (URL or "ytuser" keyword)'
+    _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/(?:user/)?)|ytuser:)(?!feed/)([A-Za-z0-9_-]+)'
     _TEMPLATE_URL = 'http://gdata.youtube.com/feeds/api/users/%s'
     _GDATA_PAGE_SIZE = 50
     _TEMPLATE_URL = 'http://gdata.youtube.com/feeds/api/users/%s'
     _GDATA_PAGE_SIZE = 50
-    _GDATA_URL = 'http://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d'
-    _VIDEO_INDICATOR = r'/watch\?v=(.+?)[\<&]'
+    _GDATA_URL = 'http://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d&alt=json'
     IE_NAME = u'youtube:user'
 
     IE_NAME = u'youtube:user'
 
+    @classmethod
+    def suitable(cls, url):
+        # Don't return True if the url can be extracted with other youtube
+        # extractor, the regex would is too permissive and it would match.
+        other_ies = iter(klass for (name, klass) in globals().items() if name.endswith('IE') and klass is not cls)
+        if any(ie.suitable(url) for ie in other_ies): return False
+        else: return super(YoutubeUserIE, cls).suitable(url)
+
     def _real_extract(self, url):
         # Extract username
         mobj = re.match(self._VALID_URL, url)
     def _real_extract(self, url):
         # Extract username
         mobj = re.match(self._VALID_URL, url)
@@ -779,22 +995,23 @@ class YoutubeUserIE(InfoExtractor):
         # all of them.
 
         video_ids = []
         # all of them.
 
         video_ids = []
-        pagenum = 0
 
 
-        while True:
+        for pagenum in itertools.count(0):
             start_index = pagenum * self._GDATA_PAGE_SIZE + 1
 
             gdata_url = self._GDATA_URL % (username, self._GDATA_PAGE_SIZE, start_index)
             page = self._download_webpage(gdata_url, username,
                                           u'Downloading video ids from %d to %d' % (start_index, start_index + self._GDATA_PAGE_SIZE))
 
             start_index = pagenum * self._GDATA_PAGE_SIZE + 1
 
             gdata_url = self._GDATA_URL % (username, self._GDATA_PAGE_SIZE, start_index)
             page = self._download_webpage(gdata_url, username,
                                           u'Downloading video ids from %d to %d' % (start_index, start_index + self._GDATA_PAGE_SIZE))
 
+            try:
+                response = json.loads(page)
+            except ValueError as err:
+                raise ExtractorError(u'Invalid JSON in API response: ' + compat_str(err))
+
             # Extract video identifiers
             ids_in_page = []
             # Extract video identifiers
             ids_in_page = []
-
-            for mobj in re.finditer(self._VIDEO_INDICATOR, page):
-                if mobj.group(1) not in ids_in_page:
-                    ids_in_page.append(mobj.group(1))
-
+            for entry in response['feed']['entry']:
+                ids_in_page.append(entry['id']['$t'].split('/')[-1])
             video_ids.extend(ids_in_page)
 
             # A little optimization - if current page is not
             video_ids.extend(ids_in_page)
 
             # A little optimization - if current page is not
@@ -806,14 +1023,12 @@ class YoutubeUserIE(InfoExtractor):
             if len(ids_in_page) < self._GDATA_PAGE_SIZE:
                 break
 
             if len(ids_in_page) < self._GDATA_PAGE_SIZE:
                 break
 
-            pagenum += 1
-
         urls = ['http://www.youtube.com/watch?v=%s' % video_id for video_id in video_ids]
         urls = ['http://www.youtube.com/watch?v=%s' % video_id for video_id in video_ids]
-        url_results = [self.url_result(url, 'Youtube') for url in urls]
+        url_results = [self.url_result(rurl, 'Youtube') for rurl in urls]
         return [self.playlist_result(url_results, playlist_title = username)]
 
 class YoutubeSearchIE(SearchInfoExtractor):
         return [self.playlist_result(url_results, playlist_title = username)]
 
 class YoutubeSearchIE(SearchInfoExtractor):
-    """Information Extractor for YouTube search queries."""
+    IE_DESC = u'YouTube.com searches'
     _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc'
     _MAX_RESULTS = 1000
     IE_NAME = u'youtube:search'
     _API_URL = 'https://gdata.youtube.com/feeds/api/videos?q=%s&start-index=%i&max-results=50&v=2&alt=jsonc'
     _MAX_RESULTS = 1000
     IE_NAME = u'youtube:search'
@@ -853,3 +1068,92 @@ class YoutubeSearchIE(SearchInfoExtractor):
             video_ids = video_ids[:n]
         videos = [self.url_result('http://www.youtube.com/watch?v=%s' % id, 'Youtube') for id in video_ids]
         return self.playlist_result(videos, query)
             video_ids = video_ids[:n]
         videos = [self.url_result('http://www.youtube.com/watch?v=%s' % id, 'Youtube') for id in video_ids]
         return self.playlist_result(videos, query)
+
+
+class YoutubeShowIE(InfoExtractor):
+    IE_DESC = u'YouTube.com (multi-season) shows'
+    _VALID_URL = r'https?://www\.youtube\.com/show/(.*)'
+    IE_NAME = u'youtube:show'
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        show_name = mobj.group(1)
+        webpage = self._download_webpage(url, show_name, u'Downloading show webpage')
+        # There's one playlist for each season of the show
+        m_seasons = list(re.finditer(r'href="(/playlist\?list=.*?)"', webpage))
+        self.to_screen(u'%s: Found %s seasons' % (show_name, len(m_seasons)))
+        return [self.url_result('https://www.youtube.com' + season.group(1), 'YoutubePlaylist') for season in m_seasons]
+
+
+class YoutubeFeedsInfoExtractor(YoutubeBaseInfoExtractor):
+    """
+    Base class for extractors that fetch info from
+    http://www.youtube.com/feed_ajax
+    Subclasses must define the _FEED_NAME and _PLAYLIST_TITLE properties.
+    """
+    _LOGIN_REQUIRED = True
+    _PAGING_STEP = 30
+    # use action_load_personal_feed instead of action_load_system_feed
+    _PERSONAL_FEED = False
+
+    @property
+    def _FEED_TEMPLATE(self):
+        action = 'action_load_system_feed'
+        if self._PERSONAL_FEED:
+            action = 'action_load_personal_feed'
+        return 'http://www.youtube.com/feed_ajax?%s=1&feed_name=%s&paging=%%s' % (action, self._FEED_NAME)
+
+    @property
+    def IE_NAME(self):
+        return u'youtube:%s' % self._FEED_NAME
+
+    def _real_initialize(self):
+        self._login()
+
+    def _real_extract(self, url):
+        feed_entries = []
+        # The step argument is available only in 2.7 or higher
+        for i in itertools.count(0):
+            paging = i*self._PAGING_STEP
+            info = self._download_webpage(self._FEED_TEMPLATE % paging,
+                                          u'%s feed' % self._FEED_NAME,
+                                          u'Downloading page %s' % i)
+            info = json.loads(info)
+            feed_html = info['feed_html']
+            m_ids = re.finditer(r'"/watch\?v=(.*?)["&]', feed_html)
+            ids = orderedSet(m.group(1) for m in m_ids)
+            feed_entries.extend(self.url_result(id, 'Youtube') for id in ids)
+            if info['paging'] is None:
+                break
+        return self.playlist_result(feed_entries, playlist_title=self._PLAYLIST_TITLE)
+
+class YoutubeSubscriptionsIE(YoutubeFeedsInfoExtractor):
+    IE_DESC = u'YouTube.com subscriptions feed, "ytsubs" keyword(requires authentication)'
+    _VALID_URL = r'https?://www\.youtube\.com/feed/subscriptions|:ytsubs(?:criptions)?'
+    _FEED_NAME = 'subscriptions'
+    _PLAYLIST_TITLE = u'Youtube Subscriptions'
+
+class YoutubeRecommendedIE(YoutubeFeedsInfoExtractor):
+    IE_DESC = u'YouTube.com recommended videos, "ytrec" keyword (requires authentication)'
+    _VALID_URL = r'https?://www\.youtube\.com/feed/recommended|:ytrec(?:ommended)?'
+    _FEED_NAME = 'recommended'
+    _PLAYLIST_TITLE = u'Youtube Recommended videos'
+
+class YoutubeWatchLaterIE(YoutubeFeedsInfoExtractor):
+    IE_DESC = u'Youtube watch later list, "ytwatchlater" keyword (requires authentication)'
+    _VALID_URL = r'https?://www\.youtube\.com/feed/watch_later|:ytwatchlater'
+    _FEED_NAME = 'watch_later'
+    _PLAYLIST_TITLE = u'Youtube Watch Later'
+    _PAGING_STEP = 100
+    _PERSONAL_FEED = True
+
+class YoutubeFavouritesIE(YoutubeBaseInfoExtractor):
+    IE_NAME = u'youtube:favorites'
+    IE_DESC = u'YouTube.com favourite videos, "ytfav" keyword (requires authentication)'
+    _VALID_URL = r'https?://www\.youtube\.com/my_favorites|:ytfav(?:ou?rites)?'
+    _LOGIN_REQUIRED = True
+
+    def _real_extract(self, url):
+        webpage = self._download_webpage('https://www.youtube.com/my_favorites', 'Youtube Favourites videos')
+        playlist_id = self._search_regex(r'list=(.+?)["&]', webpage, u'favourites playlist id')
+        return self.url_result(playlist_id, 'YoutubePlaylist')
Totally unverified clone of youtube-dl