Greasy Fork is available in English.
Shows complete video thumbnails for YouTube videos. You can click a thumbnail image to jump to that point in the video.
< 脚本YouTube Thumbnails - Full Video Thumbnails for YouTube的反馈
Thank you for the feedback. I've also noticed this with very recently posted videos. I believe that YouTube has not actually generated thumbnails for these videos yet. In the actual player, if you mouse over the seek bar, you will notice that there are no preview images. The script uses those same images, so if YouTube hasn't generated them, the script can't display them. Sorry, but there's not much I can do about that. I'll check back in a couple hours since I'm curious how long it takes for YouTube to make the thumbnails.
thanks for reply.
Working now for that video. Looks like it took ~6 hours.
Sometime not work.
sample link :
https://www.youtube.com/watch?v=9lOsvXtQ0uU