YouTube: Kanal eines Videos auch über externalChannelId finden

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

podcasts/test_youtube.py

@@ -91,6 +91,12 @@ class ResolveTests(TestCase):
         self.assertEqual((found['title'], found['artwork']), ('', ''))
         self.assertEqual(seen, [youtube.WATCH + 'aaaaaaaaaaa'])
 
+    def test_a_video_whose_details_hold_objects_still_names_its_channel(self):
+        page = (f'<script>{{"channelId":"{FEATURED}"}};{{"videoDetails":{{"videoId":"aaaaaaaaaaa",'
+                f'"thumbnail":{{"x":1}},"channelId":"{CHANNEL}","isOwnerViewing":false}}}}</script>')
+        found, _ = self.resolve(youtube.WATCH + 'aaaaaaaaaaa', page)
+        self.assertEqual(found['feed'], f'{youtube.FEED}?channel_id={CHANNEL}')
+
     def test_a_playlist_has_its_own_feed(self):
         found, _ = self.resolve('https://www.youtube.com/playlist?list=PLabcdefghijk')
         self.assertEqual(found['feed'], f'{youtube.FEED}?playlist_id=PLabcdefghijk')

podcasts/youtube.py

@@ -38,6 +38,8 @@ _OWN_CHANNEL = (
     r'"externalId":"(UC[\w-]{22})"',
     r'<meta itemprop="identifier" content="(UC[\w-]{22})"',
     r'"videoDetails":\{[^{}]*?"channelId":"(UC[\w-]{22})"',
+    r'"externalChannelId":"(UC[\w-]{22})"',             # a video's owner, in its microformat
+    r'"channelId":"(UC[\w-]{22})","isOwnerViewing"',    # videoDetails with braces before it
 )