start_time = parse_duration(time_point)
if start_time is None:
continue
+ if start_time > duration:
+ break
end_time = (duration if next_num == len(chapter_lines)
else parse_duration(chapter_lines[next_num][1]))
if end_time is None:
continue
+ if end_time > duration:
+ end_time = duration
+ if start_time > end_time:
+ break
chapter_title = re.sub(
r'<a[^>]+>[^<]+</a>', '', chapter_line).strip(' \t-')
chapter_title = re.sub(r'\s+', ' ', chapter_title)