support lazy playlist

yt_dlp/extractor/meritplus.py

@@ -24,36 +24,24 @@ class MeritPlusIE(InfoExtractor):
             'timestamp': 1724716800,
             'upload_date': '20240827',
             'series': 'Dr. Phil Primetime',
-            'season': 'Season 1',
-            'season_number': 1,
-            'episode': 'Episode 79',
-            'episode_number': 79,
-        },
-    }, {
-        'url': 'https://www.meritplus.com/c/m/ebVUK1wS?r=ok5bikOE',
-        'info_dict': {
-            'id': 'ebVUK1wS',
-            'ext': 'mp4',
-            'title': 'PBR Teams 2024: Gambler Days | Day 1',
-            'description': r're:^Get ready for Gambler Days with the PBR! Watch elite riders battle',
-            'thumbnail': 'https://cdn.jwplayer.com/v2/media/ebVUK1wS/poster.jpg?width=1920',
-            'duration': 10876.0,
-            'tags': 'count:6',
-            'timestamp': 1724461200,
-            'upload_date': '20240824',
         },
     }, {
-        'url': 'https://www.meritplus.com/m/AzVJ4sEH/bull-rider-najiah-knight-the-cowgirl-way?r=uzD8QNRj',
+        'url': 'https://www.meritplus.com/m/XeoP00kQ/marching-cobras-somebodys-gotta-do-it-with-mike-rowe?r=8SrBMsCA&play=1',
         'info_dict': {
-            'id': 'AzVJ4sEH',
+            'id': 'XeoP00kQ',
             'ext': 'mp4',
-            'title': 'Bull Rider Najiah Knight | The Cowgirl Way',
-            'description': r're:^Najiah Knight is rewriting the rules and inspiring future Cowgirls',
-            'thumbnail': 'https://cdn.jwplayer.com/v2/media/AzVJ4sEH/poster.jpg?width=1920',
-            'duration': 300.0,
-            'tags': ['The Cowgirl Way', 'seriesId_uzD8QNRj', 'PBR'],
-            'timestamp': 1720195320,
-            'upload_date': '20240705',
+            'title': 'Marching Cobras | Somebody\'s Gotta Do It with Mike Rowe',
+            'description': r're:^Don Daughtry teaches his young students to reach for a brighter future',
+            'thumbnail': 'https://cdn.jwplayer.com/v2/media/XeoP00kQ/poster.jpg?width=1920',
+            'duration': 1471.0,
+            'tags': 'count:14',
+            'timestamp': 1714233600,
+            'upload_date': '20240427',
+            'series': 'Somebody\'s Gotta Do It With Mike Rowe',
+            'episode': 'Episode 13',
+            'episode_number': 13,
+            'season': 'Season 1',
+            'season_number': 1,
         },
     }, {
         'url': 'https://www.meritplus.com/c/sns/jryHEWXj',
@@ -61,18 +49,18 @@ class MeritPlusIE(InfoExtractor):
             'id': 'jryHEWXj',
             'title': 'Morning On Merit Street',
             'description': r're:^Award winning journalist Dominique Sachse and co-host Fanchon Stinger',
-            'thumbnail': 'https://assets.mediabackstage.com/merit_prod/thumbnails/moms_thumbnail_1920x1080-1708708358462.jpg',
+            'thumbnail': r're:^https://assets.mediabackstage.com/merit_prod.*\.png',
         },
-        'playlist_count': 5,
+        'playlist_mincount': 5,
     }, {
         'url': 'https://www.meritplus.com/c/s/eAzd5bqW',
         'info_dict': {
             'id': 'eAzd5bqW',
             'title': 'Crime Stories with Nancy Grace',
             'description': r're:^Nancy Grace explores the inside story of true crimes and cold cases',
-            'thumbnail': 'https://assets.mediabackstage.com/merit_prod%2Fthumbnails%2Fnancygrace_thumbnail_1920x1080-1721658217049.jpg',
+            'thumbnail': r're:^https://assets.mediabackstage.com/merit_prod.*\.jpg',
         },
-        'playlist_count': 15,
+        'playlist_mincount': 10,
     }]
 
     def _real_extract(self, url):
@@ -82,8 +70,7 @@ class MeritPlusIE(InfoExtractor):
         else:
             json = self._download_json(f'https://cdn.jwplayer.com/v2/playlists/{video_id}?format=json&page_limit=500', video_id)
 
-        entries = []
-        for video in json.get('playlist', []):
+        def extract_video(video):
             thumbnails, formats, subtitles = [], [], {}
             for image in video.get('images', []):
                 thumbnails.append({
@@ -120,7 +107,7 @@ class MeritPlusIE(InfoExtractor):
                             'vcodec': ('type', {lambda v: 'none' if 'audio' in v else None}),
                         }))
 
-            entries.append({**traverse_obj(video, {
+            return {**traverse_obj(video, {
                 'id': ('mediaid', {str}),
                 'title': ('title', {str}),
                 'description': ('description', {str}),
@@ -138,15 +125,17 @@ class MeritPlusIE(InfoExtractor):
                 'thumbnails': thumbnails,
                 'formats': formats,
                 'subtitles': subtitles,
-            })
+            }
 
-        if len(entries) == 1:
-            return entries[0]
-        elif len(entries) > 1:
+        playlist = json.get('playlist', [])
+        if len(playlist) == 1:
+            return extract_video(playlist[0])
+        elif len(playlist) > 1:
             description = join_nonempty('shortDescription', 'description', delim=' ', from_dict=json)
             thumbnail = traverse_obj(json, (('imgHomeRailThumb16x9', 'imgFeaturedTvBanner16x9'),
                                             {url_or_none}), get_all=False)
-            return self.playlist_result(entries, id=json['seriesId'], title=json['title'],
+            return self.playlist_result((extract_video(video) for video in playlist),
+                                        id=json['seriesId'], title=json['title'],
                                         description=description, thumbnail=thumbnail)
         else:
             self.raise_no_formats('No video formats found!')