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[youtube] Extract more thumbnails

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* The thumbnail URLs are hard-coded and their actual existence is tested lazily
* Added option `--no-check-formats` to not test them

Closes #340, Related: #402, #337, https://github.com/ytdl-org/youtube-dl/issues/29049
This commit is contained in:
pukkandan
2021-07-15 22:49:59 +05:30
parent d9488f69c1
commit 0ba692acc8
5 changed files with 61 additions and 34 deletions
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1
yt_dlp/extractor/common.py
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@@ -229,6 +229,7 @@ class InfoExtractor(object):
* "resolution" (optional, string "{width}x{height}",
deprecated)
* "filesize" (optional, int)
* "_test_url" (optional, bool) - If true, test the URL
thumbnail: Full URL to a video thumbnail image.
description: Full video description.
uploader: Full name of the video uploader.

45
yt_dlp/extractor/youtube.py
View File

@@ -2645,7 +2645,21 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
f['stretched_ratio'] = ratio
break
category = microformat.get('category') or search_meta('genre')
channel_id = video_details.get('channelId') \
or microformat.get('externalChannelId') \
or search_meta('channelId')
duration = int_or_none(
video_details.get('lengthSeconds')
or microformat.get('lengthSeconds')) \
or parse_duration(search_meta('duration'))
is_live = video_details.get('isLive')
is_upcoming = video_details.get('isUpcoming')
owner_profile_url = microformat.get('ownerProfileUrl')
thumbnails = []
thumbnail_types = ['maxresdefault', 'sddefault', 'hqdefault', '0', 'mqdefault', 'default', '1', '2', '3']
for container in (video_details, microformat):
for thumbnail in (try_get(
container,
@@ -2662,34 +2676,25 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
'url': thumbnail_url,
'height': int_or_none(thumbnail.get('height')),
'width': int_or_none(thumbnail.get('width')),
'preference': 1 if 'maxresdefault' in thumbnail_url else -1
})
thumbnail_url = search_meta(['og:image', 'twitter:image'])
if thumbnail_url:
thumbnails.append({
'url': thumbnail_url,
'preference': 1 if 'maxresdefault' in thumbnail_url else -1
})
# All videos have a maxresdefault thumbnail, but sometimes it does not appear in the webpage
# See: https://github.com/ytdl-org/youtube-dl/issues/29049
thumbnails.append({
'url': 'https://i.ytimg.com/vi/%s/maxresdefault.jpg' % video_id,
'preference': 1,
})
# The best resolution thumbnails sometimes does not appear in the webpage
# See: https://github.com/ytdl-org/youtube-dl/issues/29049, https://github.com/yt-dlp/yt-dlp/issues/340
thumbnails.extend({
'url': 'https://i.ytimg.com/vi{webp}/{video_id}/{name}{live}.{ext}'.format(
video_id=video_id, name=name, ext=ext,
webp='_webp' if ext == 'webp' else '', live='_live' if is_live else ''),
'_test_url': True,
} for name in thumbnail_types for ext in ('webp', 'jpg'))
for thumb in thumbnails:
i = next((i for i, t in enumerate(thumbnail_types) if f'/{video_id}/{t}' in thumb['url']), 20)
thumb['preference'] = (0 if '.webp' in thumb['url'] else -1) - (2 * i)
self._remove_duplicate_formats(thumbnails)
category = microformat.get('category') or search_meta('genre')
channel_id = video_details.get('channelId') \
or microformat.get('externalChannelId') \
or search_meta('channelId')
duration = int_or_none(
video_details.get('lengthSeconds')
or microformat.get('lengthSeconds')) \
or parse_duration(search_meta('duration'))
is_live = video_details.get('isLive')
is_upcoming = video_details.get('isUpcoming')
owner_profile_url = microformat.get('ownerProfileUrl')
info = {
'id': video_id,
'title': self._live_title(video_title) if is_live else video_title,