[youtube] Populate `thumbnail` with the best "known" thumbnail

Closes #402, Related: https://github.com/yt-dlp/yt-dlp/issues/340#issuecomment-950290624
pull/1403/head
pukkandan 3 years ago
parent 9f1a1c36e6
commit fccf502118
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@ -2696,6 +2696,8 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
thumbnails.append({ thumbnails.append({
'url': thumbnail_url, 'url': thumbnail_url,
}) })
original_thumbnails = thumbnails.copy()
# The best resolution thumbnails sometimes does not appear in the webpage # 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 # See: https://github.com/ytdl-org/youtube-dl/issues/29049, https://github.com/yt-dlp/yt-dlp/issues/340
# List of possible thumbnails - Ref: <https://stackoverflow.com/a/20542029> # List of possible thumbnails - Ref: <https://stackoverflow.com/a/20542029>
@ -2706,7 +2708,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
'default', '1', '2', '3' 'default', '1', '2', '3'
] ]
n_thumbnail_names = len(thumbnail_names) n_thumbnail_names = len(thumbnail_names)
thumbnails.extend({ thumbnails.extend({
'url': 'https://i.ytimg.com/vi{webp}/{video_id}/{name}{live}.{ext}'.format( 'url': 'https://i.ytimg.com/vi{webp}/{video_id}/{name}{live}.{ext}'.format(
video_id=video_id, name=name, ext=ext, video_id=video_id, name=name, ext=ext,
@ -2716,6 +2717,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
i = next((i for i, t in enumerate(thumbnail_names) if f'/{video_id}/{t}' in thumb['url']), n_thumbnail_names) i = next((i for i, t in enumerate(thumbnail_names) if f'/{video_id}/{t}' in thumb['url']), n_thumbnail_names)
thumb['preference'] = (0 if '.webp' in thumb['url'] else -1) - (2 * i) thumb['preference'] = (0 if '.webp' in thumb['url'] else -1) - (2 * i)
self._remove_duplicate_formats(thumbnails) self._remove_duplicate_formats(thumbnails)
self._downloader._sort_thumbnails(original_thumbnails)
category = get_first(microformats, 'category') or search_meta('genre') category = get_first(microformats, 'category') or search_meta('genre')
channel_id = str_or_none( channel_id = str_or_none(
@ -2745,6 +2747,9 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
'title': self._live_title(video_title) if is_live else video_title, 'title': self._live_title(video_title) if is_live else video_title,
'formats': formats, 'formats': formats,
'thumbnails': thumbnails, 'thumbnails': thumbnails,
# The best thumbnail that we are sure exists. Prevents unnecessary
# URL checking if user don't care about getting the best possible thumbnail
'thumbnail': traverse_obj(original_thumbnails, (-1, 'url')),
'description': video_description, 'description': video_description,
'upload_date': unified_strdate( 'upload_date': unified_strdate(
get_first(microformats, 'uploadDate') get_first(microformats, 'uploadDate')

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