+ if not chapters:
+ for chapter_data in re.findall(r'(?s)chapters\.push\(({.*?})\)', player):
+ chapter = self._parse_json(chapter_data, video_id, js_to_json, fatal=False)
+ if not chapter:
+ continue
+ start_time = float_or_none(chapter.get('start_time'), 1000)
+ duration = float_or_none(chapter.get('duration'), 1000)
+ if start_time is None or duration is None:
+ continue
+ chapters.append({
+ 'start_time': start_time,
+ 'end_time': start_time + duration,
+ 'title': chapter.get('title'),
+ })