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[youtube] fix: extract mix playlist ids from ytInitialData (#33)

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This commit is contained in:
insaneracist 2020-10-29 16:11:14 -07:00
parent 4932ba4aec
commit 5b0a6a8010
1 changed files with 26 additions and 9 deletions
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35
youtube_dlc/extractor/youtube.py
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@ -279,6 +279,15 @@ def _download_webpage_handle(self, *args, **kwargs):
return super(YoutubeBaseInfoExtractor, self)._download_webpage_handle(
*args, **compat_kwargs(kwargs))
def _get_yt_initial_data(self, video_id, webpage):
config = self._search_regex(
(r'window\["ytInitialData"\]\s*=\s*(.*?)(?<=});',
r'var\s+ytInitialData\s*=\s*(.*?)(?<=});'),
webpage, 'ytInitialData', default=None)
if config:
return self._parse_json(
uppercase_escape(config), video_id, fatal=False)
def _real_initialize(self):
if self._downloader is None:
return
@ -1397,15 +1406,6 @@ def _get_ytplayer_config(self, video_id, webpage):
return self._parse_json(
uppercase_escape(config), video_id, fatal=False)
def _get_yt_initial_data(self, video_id, webpage):
config = self._search_regex(
(r'window\["ytInitialData"\]\s*=\s*(.*?)(?<=});',
r'var\s+ytInitialData\s*=\s*(.*?)(?<=});'),
webpage, 'ytInitialData', default=None)
if config:
return self._parse_json(
uppercase_escape(config), video_id, fatal=False)
def _get_automatic_captions(self, video_id, webpage):
"""We need the webpage for getting the captions url, pass it as an
argument to speed up the process."""
@ -2765,6 +2765,16 @@ def extract_videos_from_page(self, page):
return zip(ids_in_page, titles_in_page)
def _extract_mix_ids_from_yt_initial(self, yt_initial):
ids = []
playlist_contents = try_get(yt_initial, lambda x: x['contents']['twoColumnWatchNextResults']['playlist']['playlist']['contents'])
if type(playlist_contents) is list:
for item in playlist_contents:
videoId = try_get(item, lambda x: x['playlistPanelVideoRenderer']['videoId'])
if type(videoId) is str:
ids.append(videoId)
return ids
def _extract_mix(self, playlist_id):
# The mixes are generated from a single video
# the id of the playlist is just 'RD' + video_id
@ -2778,6 +2788,13 @@ def _extract_mix(self, playlist_id):
r'''(?xs)data-video-username=".*?".*?
href="/watch\?v=([0-9A-Za-z_-]{11})&amp;[^"]*?list=%s''' % re.escape(playlist_id),
webpage))
# if no ids in html of page, try using embedded json
if (len(new_ids) == 0):
yt_initial = self._get_yt_initial_data(playlist_id, webpage)
if yt_initial:
new_ids = self._extract_mix_ids_from_yt_initial(yt_initial)
# Fetch new pages until all the videos are repeated, it seems that
# there are always 51 unique videos.
new_ids = [_id for _id in new_ids if _id not in ids]