[ie/youtube] Replace `ios` with `tv_simply` in default clients (#14123)

Also:
- Add `web_safari` to default logged-in clients
- Add `web_creator` to default premium clients
- Flag `ios` HLS formats as requiring PO token

Closes #13702
Authored by: bashonly, coletdjnz

Co-authored-by: coletdjnz <coletdjnz@protonmail.com>

README.md

@@ -1802,7 +1802,7 @@ The following extractors use this feature:
 #### youtube
 * `lang`: Prefer translated metadata (`title`, `description` etc) of this language code (case-sensitive). By default, the video primary language metadata is preferred, with a fallback to `en` translated. See [youtube/_base.py](https://github.com/yt-dlp/yt-dlp/blob/415b4c9f955b1a0391204bd24a7132590e7b3bdb/yt_dlp/extractor/youtube/_base.py#L402-L409) for the list of supported content language codes
 * `skip`: One or more of `hls`, `dash` or `translated_subs` to skip extraction of the m3u8 manifests, dash manifests and [auto-translated subtitles](https://github.com/yt-dlp/yt-dlp/issues/4090#issuecomment-1158102032) respectively
-* `player_client`: Clients to extract video data from. The currently available clients are `web`, `web_safari`, `web_embedded`, `web_music`, `web_creator`, `mweb`, `ios`, `android`, `android_vr`, `tv`, `tv_simply` and `tv_embedded`. By default, `tv,ios,web` is used, or `tv,web` is used when authenticating with cookies. The `web_music` client is added for `music.youtube.com` URLs when logged-in cookies are used. The `web_embedded` client is added for age-restricted videos but only works if the video is embeddable. The `tv_embedded` and `web_creator` clients are added for age-restricted videos if account age-verification is required. Some clients, such as `web` and `web_music`, require a `po_token` for their formats to be downloadable. Some clients, such as `web_creator`, will only work with authentication. Not all clients support authentication via cookies. You can use `default` for the default clients, or you can use `all` for all clients (not recommended). You can prefix a client with `-` to exclude it, e.g. `youtube:player_client=default,-ios`
+* `player_client`: Clients to extract video data from. The currently available clients are `web`, `web_safari`, `web_embedded`, `web_music`, `web_creator`, `mweb`, `ios`, `android`, `android_vr`, `tv`, `tv_simply` and `tv_embedded`. By default, `tv,tv_simply,web` is used, but `tv,web_safari,web` is used when authenticating with cookies and `tv,web_creator,web` is used with premium accounts. The `web_music` client is added for `music.youtube.com` URLs when logged-in cookies are used. The `web_embedded` client is added for age-restricted videos but only works if the video is embeddable. The `tv_embedded` and `web_creator` clients are added for age-restricted videos if account age-verification is required. Some clients, such as `web` and `web_music`, require a `po_token` for their formats to be downloadable. Some clients, such as `web_creator`, will only work with authentication. Not all clients support authentication via cookies. You can use `default` for the default clients, or you can use `all` for all clients (not recommended). You can prefix a client with `-` to exclude it, e.g. `youtube:player_client=default,-ios`
 * `player_skip`: Skip some network requests that are generally needed for robust extraction. One or more of `configs` (skip client configs), `webpage` (skip initial webpage), `js` (skip js player), `initial_data` (skip initial data/next ep request). While these options can help reduce the number of requests needed or avoid some rate-limiting, they could cause issues such as missing formats or metadata.  See [#860](https://github.com/yt-dlp/yt-dlp/pull/860) and [#12826](https://github.com/yt-dlp/yt-dlp/issues/12826) for more details
 * `webpage_skip`: Skip extraction of embedded webpage data. One or both of `player_response`, `initial_data`. These options are for testing purposes and don't skip any network requests
 * `player_params`: YouTube player parameters to use for player requests. Will overwrite any default ones set by yt-dlp.

yt_dlp/extractor/youtube/_base.py

@@ -259,9 +259,8 @@ INNERTUBE_CLIENTS = {
                 not_required_with_player_token=True,
             ),
             # HLS Livestreams require POT 30 seconds in
-            # TODO: Rolling out
             StreamingProtocol.HLS: GvsPoTokenPolicy(
-                required=False,
+                required=True,
                 recommended=True,
                 not_required_with_player_token=True,
             ),

yt_dlp/extractor/youtube/_video.py

@@ -256,10 +256,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         '401': {'ext': 'mp4', 'height': 2160, 'format_note': 'DASH video', 'vcodec': 'av01.0.12M.08'},
     }
     _SUBTITLE_FORMATS = ('json3', 'srv1', 'srv2', 'srv3', 'ttml', 'srt', 'vtt')
-    _DEFAULT_CLIENTS = ('tv', 'ios', 'web')
-    _DEFAULT_AUTHED_CLIENTS = ('tv', 'web')
+    _DEFAULT_CLIENTS = ('tv', 'tv_simply', 'web')
+    _DEFAULT_AUTHED_CLIENTS = ('tv', 'web_safari', 'web')
     # Premium does not require POT (except for subtitles)
-    _DEFAULT_PREMIUM_CLIENTS = ('tv', 'web')
+    _DEFAULT_PREMIUM_CLIENTS = ('tv', 'web_creator', 'web')
 
     _GEO_BYPASS = False
 
@@ -3308,11 +3308,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             f'{video_id}: {client_name} client {proto} formats require a GVS PO Token which was not provided. '
             'They will be skipped as they may yield HTTP Error 403. '
             f'You can manually pass a GVS PO Token for this client with --extractor-args "youtube:po_token={client_name}.gvs+XXX". '
-            f'For more information, refer to  {PO_TOKEN_GUIDE_URL} . '
-            'To enable these broken formats anyway, pass --extractor-args "youtube:formats=missing_pot"')
+            f'For more information, refer to  {PO_TOKEN_GUIDE_URL}')
 
         # Only raise a warning for non-default clients, to not confuse users.
-        # iOS HLS formats still work without PO Token, so we don't need to warn about them.
         if client_name in (*self._DEFAULT_CLIENTS, *self._DEFAULT_AUTHED_CLIENTS):
             self.write_debug(msg, only_once=True)
         else:
@@ -3601,11 +3599,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 f['format_note'] = join_nonempty(f.get('format_note'), 'MISSING POT', delim=' ')
                 f['source_preference'] -= 20
 
-            # XXX: Check if IOS HLS formats are affected by PO token enforcement; temporary
-            # See https://github.com/yt-dlp/yt-dlp/issues/13511
-            if proto == 'hls' and client_name == 'ios':
-                f['__needs_testing'] = True
-
             itags[itag].add(key)
 
             if itag and all_formats:
@@ -4421,7 +4414,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
 
         if upload_date and live_status not in ('is_live', 'post_live', 'is_upcoming'):
             # Newly uploaded videos' HLS formats are potentially problematic and need to be checked
-            # XXX: This is redundant for as long as we are already checking all IOS HLS formats
             upload_datetime = datetime_from_str(upload_date).replace(tzinfo=dt.timezone.utc)
             if upload_datetime >= datetime_from_str('today-2days'):
                 for fmt in info['formats']: