[ie/1tv:live] Add extractor (#14299)

Authored by: swayll

yt_dlp/extractor/_extractors.py

@@ -640,7 +640,10 @@ from .filmon import (
     FilmOnIE,
 )
 from .filmweb import FilmwebIE
-from .firsttv import FirstTVIE
+from .firsttv import (
+    FirstTVIE,
+    FirstTVLiveIE,
+)
 from .fivetv import FiveTVIE
 from .flextv import FlexTVIE
 from .flickr import FlickrIE

yt_dlp/extractor/firsttv.py

@@ -10,7 +10,7 @@ from ..utils import (
     unified_strdate,
     url_or_none,
 )
-from ..utils.traversal import traverse_obj
+from ..utils.traversal import require, traverse_obj
 
 
 class FirstTVIE(InfoExtractor):
@@ -129,3 +129,36 @@ class FirstTVIE(InfoExtractor):
         return self.playlist_result(
             self._entries(items), display_id, self._og_search_title(webpage, default=None),
             thumbnail=self._og_search_thumbnail(webpage, default=None))
+
+
+class FirstTVLiveIE(InfoExtractor):
+    IE_NAME = '1tv:live'
+    IE_DESC = 'Первый канал (прямой эфир)'
+    _VALID_URL = r'https?://(?:www\.)?1tv\.ru/live'
+
+    _TESTS = [{
+        'url': 'https://www.1tv.ru/live',
+        'info_dict': {
+            'id': 'live',
+            'ext': 'mp4',
+            'title': r're:ПЕРВЫЙ КАНАЛ ПРЯМОЙ ЭФИР СМОТРЕТЬ ОНЛАЙН \d{4}-\d{2}-\d{2} \d{2}:\d{2}$',
+            'live_status': 'is_live',
+        },
+        'params': {'skip_download': 'livestream'},
+    }]
+
+    def _real_extract(self, url):
+        display_id = 'live'
+        webpage = self._download_webpage(url, display_id, fatal=False)
+
+        streams_list = self._download_json('https://stream.1tv.ru/api/playlist/1tvch-v1_as_array.json', display_id)
+        mpd_url = traverse_obj(streams_list, ('mpd', ..., {url_or_none}, any, {require('mpd url')}))
+        # FFmpeg needs to be passed -re to not seek past live window. This is handled by core
+        formats, _ = self._extract_mpd_formats_and_subtitles(mpd_url, display_id, mpd_id='dash')
+
+        return {
+            'id': display_id,
+            'title': self._html_extract_title(webpage),
+            'formats': formats,
+            'is_live': True,
+        }