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[youtube] Extract chapters

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This commit is contained in:
Sergey M․
2017-05-06 02:27:06 +07:00
parent 329e3dd5ad
commit 9cafc3fd8b
2 changed files with 301 additions and 2 deletions
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36
youtube_dl/extractor/youtube.py
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@@ -1257,6 +1257,35 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
url = 'https://www.youtube.com/annotations_invideo?features=1&legacy=1&video_id=%s' % video_id
return self._download_webpage(url, video_id, note='Searching for annotations.', errnote='Unable to download video annotations.')
@staticmethod
def _extract_chapters(description, duration):
if not description:
return None
chapter_lines = re.findall(
r'(?:^|<br\s*/>)([^<]*<a[^>]+onclick=["\']yt\.www\.watch\.player\.seekTo[^>]+>(\d{1,2}:\d{1,2}(?::\d{1,2})?)</a>[^>]*)(?=$|<br\s*/>)',
description)
if not chapter_lines:
return None
chapters = []
for next_num, (chapter_line, time_point) in enumerate(
chapter_lines, start=1):
start_time = parse_duration(time_point)
if start_time is None:
continue
end_time = (duration if next_num == len(chapter_lines)
else parse_duration(chapter_lines[next_num][1]))
if end_time is None:
continue
chapter_title = re.sub(
r'<a[^>]+>[^<]+</a>', '', chapter_line).strip(' \t-')
chapter_title = re.sub(r'\s+', ' ', chapter_title)
chapters.append({
'start_time': start_time,
'end_time': end_time,
'title': chapter_title,
})
return chapters
def _real_extract(self, url):
url, smuggled_data = unsmuggle_url(url, {})
@@ -1399,9 +1428,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
video_title = '_'
# description
video_description = get_element_by_id("eow-description", video_webpage)
description_original = video_description = get_element_by_id("eow-description", video_webpage)
if video_description:
video_description = re.sub(r'''(?x)
description_original = video_description = re.sub(r'''(?x)
<a\s+
(?:[a-zA-Z-]+="[^"]*"\s+)*?
(?:title|href)="([^"]+)"\s+
@@ -1558,6 +1587,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
if self._downloader.params.get('writeannotations', False):
video_annotations = self._extract_annotations(video_id)
chapters = self._extract_chapters(description_original, video_duration)
if 'conn' in video_info and video_info['conn'][0].startswith('rtmp'):
self.report_rtmp_download()
formats = [{
@@ -1790,6 +1821,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
'duration': video_duration,
'age_limit': 18 if age_gate else 0,
'annotations': video_annotations,
'chapters': chapters,
'webpage_url': proto + '://www.youtube.com/watch?v=%s' % video_id,
'view_count': view_count,
'like_count': like_count,