[yandextelemost] Add extractor

Add support for telemost.yandex.ru/live/ and
runtime.strm.yandex.ru/player/

yt_dlp/extractor/_extractors.py

@@ -2524,6 +2524,10 @@ from .yandexmusic import (
     YandexMusicPlaylistIE,
     YandexMusicTrackIE,
 )
+from .yandextelemost import (
+    YandexRuntimeStrmIE,
+    YandexTelemostIE,
+)
 from .yandexvideo import (
     YandexVideoIE,
     YandexVideoPreviewIE,

yt_dlp/extractor/yandextelemost.py

@@ -0,0 +1,94 @@
+
+from .common import InfoExtractor
+from ..utils import (
+    js_to_json,
+    url_or_none,
+)
+from ..utils.traversal import traverse_obj
+
+
+class YandexRuntimeStrmIE(InfoExtractor):
+    _VALID_URL = r'https?://runtime\.strm\.yandex\.ru/player/[a-z]+/(?P<id>[a-z0-9]+)'
+    _TESTS = [{
+        'url': 'https://runtime.strm.yandex.ru/player/episode/vple3e7omvkythqefn4a',
+        'info_dict': {
+            'id': 'vple3e7omvkythqefn4a',
+            'ext': 'mp4',
+            # match any timestamp appended for live streams
+            'title': r're:^ed3ab5fc53624ae19e4b65886bf4bb70.*',
+            'live_status': 'is_live',
+        },
+        'params': {'skip_download': True},
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        webpage = self._download_webpage(url, video_id)
+        playlist = self._search_json(
+            r'window\.CloudVideo\.hydratePage\s*\(',
+            webpage, 'playlist', video_id, transform_source=js_to_json)
+        content = traverse_obj(playlist, ('firstItemData', 'content'))
+
+        formats = []
+        streams = content.get('streams', [])
+        for stream in streams:
+            s_url = url_or_none(stream.get('url'))
+            if not s_url:
+                continue
+
+            live_from_start = self.get_param('live_from_start', False)
+            stream_type = stream.get('type')
+            # dash is too complicated
+            #
+            # if stream_type == 'dash':
+            #     dash_formats = self._extract_mpd_formats(
+            #         s_url, video_id, mpd_id='dash', fatal=False)
+            #     formats.extend(dash_formats)
+            if stream_type == 'hls':
+                hls_formats = self._extract_m3u8_formats(
+                    s_url, video_id, 'mp4', m3u8_id='hls', fatal=False, live=True)
+                if live_from_start:
+                    for f in hls_formats:
+                        f.setdefault('downloader_options', {}).update({'ffmpeg_args': ['-live_start_index', '0']})
+                        f['is_from_start'] = True
+                formats.extend(hls_formats)
+
+        return {
+            'id': video_id,
+            'formats': formats,
+            **traverse_obj(content, {
+                'title': ('title', {str}),
+                'is_live': ('ugc_live', {bool}),
+            }),
+        }
+
+
+class YandexTelemostIE(InfoExtractor):
+    _VALID_URL = r'https?://telemost\.yandex\.ru/live/(?P<id>[a-zA-Z0-9]+)'
+    _TESTS = [{
+        'url': 'https://telemost.yandex.ru/live/ed3ab5fc53624ae19e4b65886bf4bb70',
+        'info_dict': {
+            'id': 'vple3e7omvkythqefn4a',
+            'ext': 'mp4',
+            # match any timestamp appended for live streams
+            'title': r're:^Подготовка к аттестации.*',
+            'live_status': 'is_live',
+        },
+        'params': {'skip_download': True},
+    }]
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        webpage = self._download_webpage(url, video_id)
+        preloaded_state = self._search_json(
+            r'<script[^>]+id="preloaded-state"[^>]*>',
+            webpage, 'preloaded_state', video_id)
+        return {
+            '_type': 'url_transparent',
+            'ie_key': 'YandexRuntimeStrm',
+            'id': video_id,
+            **traverse_obj(preloaded_state, ('broadcastView', {
+                'title': ('caption', {str}),
+                'url': ('player_url', {url_or_none}),
+            })),
+        }