[youtube] Add age-gate bypass for unverified accounts (#600)

Adds `_creator` variants for each client

Authored by: zerodytrash, colethedj, pukkandan

README.md

@@ -1357,7 +1357,7 @@ Some extractors accept additional arguments which can be passed using `--extract
 The following extractors use this feature:
 * **youtube**
     * `skip`: `hls` or `dash` (or both) to skip download of the respective manifests
-    * `player_client`: Clients to extract video data from - one or more of `web`, `android`, `ios`, `mweb`, `web_music`, `android_music`, `ios_music`, `web_embedded`, `android_embedded`, `ios_embedded`, `web_agegate`, `android_agegate`, `ios_agegate`, `mweb_agegate` or `all`. By default, `android,web` is used. If the URL is from `music.youtube.com`, `android,web,android_music,web_music` is used. If age-gate is detected, the `_agegate` variants are automatically added.
+    * `player_client`: Clients to extract video data from. The main clients are `web`, `android`, `ios`, `mweb`. These also have `_music`, `_embedded`, `_agegate`, and `_creator` variants (Eg: `web_embedded`) (`mweb` has only `_agegate`). By default, `android,web` is used, but the agegate and creator variants are added as required for age-gated videos. Similarly the music variants are added for `music.youtube.com` urls. You can also use `all` to use all the clients
     * `player_skip`: `configs` - skip any requests for client configs and use defaults
     * `comment_sort`: `top` or `new` (default) - choose comment sorting mode (on YouTube's side).
     * `max_comments`: maximum amount of comments to download (default all).

yt_dlp/extractor/youtube.py

@@ -100,6 +100,16 @@ INNERTUBE_CLIENTS = {
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 67,
     },
+    'web_creator': {
+        'INNERTUBE_API_KEY': 'AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8',
+        'INNERTUBE_CONTEXT': {
+            'client': {
+                'clientName': 'WEB_CREATOR',
+                'clientVersion': '1.20210621.00.00',
+            }
+        },
+        'INNERTUBE_CONTEXT_CLIENT_NAME': 62,
+    },
     'android': {
         'INNERTUBE_API_KEY': 'AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8',
         'INNERTUBE_CONTEXT': {
@@ -131,6 +141,15 @@ INNERTUBE_CLIENTS = {
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 21,
     },
+    'android_creator': {
+        'INNERTUBE_CONTEXT': {
+            'client': {
+                'clientName': 'ANDROID_CREATOR',
+                'clientVersion': '21.24.100',
+            },
+        },
+        'INNERTUBE_CONTEXT_CLIENT_NAME': 14
+    },
     # ios has HLS live streams
     # See: https://github.com/TeamNewPipe/NewPipeExtractor/issues/680
     'ios': {
@@ -164,6 +183,15 @@ INNERTUBE_CLIENTS = {
         },
         'INNERTUBE_CONTEXT_CLIENT_NAME': 26
     },
+    'ios_creator': {
+        'INNERTUBE_CONTEXT': {
+            'client': {
+                'clientName': 'IOS_CREATOR',
+                'clientVersion': '21.24.100',
+            },
+        },
+        'INNERTUBE_CONTEXT_CLIENT_NAME': 15
+    },
     # mweb has 'ultralow' formats
     # See: https://github.com/yt-dlp/yt-dlp/pull/557
     'mweb': {
@@ -1036,17 +1064,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
     }
     _SUBTITLE_FORMATS = ('json3', 'srv1', 'srv2', 'srv3', 'ttml', 'vtt')
 
-    _AGE_GATE_REASONS = (
-        'Sign in to confirm your age',
-        'This video may be inappropriate for some users.',
-        'Sorry, this content is age-restricted.',
-        'Please confirm your age.')
-
-    _AGE_GATE_STATUS_REASONS = (
-        'AGE_VERIFICATION_REQUIRED',
-        'AGE_CHECK_REQUIRED'
-    )
-
     _GEO_BYPASS = False
 
     IE_NAME = 'youtube'
@@ -2402,14 +2419,21 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'racyCheckOk': True
         }
 
-    def _is_agegated(self, player_response):
-        reasons = traverse_obj(player_response, ('playabilityStatus', ('status', 'reason')), default=[])
-        for reason in reasons:
-            if reason in self._AGE_GATE_REASONS + self._AGE_GATE_STATUS_REASONS:
-                return True
-        if traverse_obj(player_response, ('playabilityStatus', 'desktopLegacyAgeGateReason')) is not None:
+    @staticmethod
+    def _is_agegated(player_response):
+        if traverse_obj(player_response, ('playabilityStatus', 'desktopLegacyAgeGateReason')):
             return True
-        return False
+
+        reasons = traverse_obj(player_response, ('playabilityStatus', ('status', 'reason')), default=[])
+        AGE_GATE_REASONS = (
+            'confirm your age', 'age-restricted', 'inappropriate',  # reason
+            'age_verification_required', 'age_check_required',  # status
+        )
+        return any(expected in reason for expected in AGE_GATE_REASONS for reason in reasons)
+
+    @staticmethod
+    def _is_unplayable(player_response):
+        return traverse_obj(player_response, ('playabilityStatus', 'status')) == 'UNPLAYABLE'
 
     def _extract_player_response(self, client, video_id, master_ytcfg, player_ytcfg, identity_token, player_url, initial_pr):
 
@@ -2446,7 +2470,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
         if smuggled_data.get('is_music_url') or self.is_music_url(url):
             requested_clients.extend(
-                f'{client}_music' for client in requested_clients if not client.endswith('_music'))
+                f'{client}_music' for client in requested_clients if f'{client}_music' in INNERTUBE_CLIENTS)
 
         return orderedSet(requested_clients)
 
@@ -2469,6 +2493,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
         original_clients = clients
         clients = clients[::-1]
+
+        def append_client(client_name):
+            if client_name in INNERTUBE_CLIENTS and client_name not in original_clients:
+                clients.append(client_name)
+
         while clients:
             client = clients.pop()
             player_ytcfg = master_ytcfg if client == 'web' else {}
@@ -2482,10 +2511,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             if pr:
                 yield pr
 
-            if self._is_agegated(pr):
-                client = f'{client}_agegate'
-                if client in INNERTUBE_CLIENTS and client not in original_clients:
-                    clients.append(client)
+            # creator clients can bypass AGE_VERIFICATION_REQUIRED if logged in
+            if client.endswith('_agegate') and self._is_unplayable(pr) and self._generate_sapisidhash_header():
+                append_client(client.replace('_agegate', '_creator'))
+            elif self._is_agegated(pr):
+                append_client(f'{client}_agegate')
 
         # Android player_response does not have microFormats which are needed for
         # extraction of some data. So we return the initial_pr with formats