This script adds a small section labeled "Thumbnails" in between the video and the title on YouTube video pages. When clicked, it expands to show a full set of video thumbnails, including timestamps. Click an individual time or image to jump to that point in the video. Click the heading again to hide the thumbnails.
Please note that it can take YouTube a few hours to generate thumbnails for newly posted videos. If there are no thumbnails available, the section will say "No Thumbnails Available" (also happens with very old videos).
(Tested in Firefox and Chrome with Tampermonkey. Please give me feedback if you have any issues!)
0.4.9 Fixes to ytplayer -> #movie_player -> xhr logic. Fix for window.ytplayer.config.args.storyboard_spec no longer present. (Now use JSON.parse(window.ytplayer.config.args.player_response).storyboards.playerStoryboardSpecRenderer.spec (fun).)
0.4.8 Fix issue with a change in youtube player's api.
0.4.7 Small fix for Chrome adding '?sqp=' to storyboard URLs for some reason.
0.4.6: Updated with an additional storyboard spec detection method that avoids the need for XHR in most cases.
0.4.5: Changes to better handle SPF loading and fix storyboard spec loading via XHR.
0.4.3: Small change to be compatible with YouTube DeepDark script
0.4.2: Fixed compatibility with old YouTube layout.
0.4.1: Fixed some issues with YouTube's dynamic loading.
0.4.0: Fixed to work with YouTube's new layout.
0.3.5: Should now work when navigating from non-video pages. And butts.
0.3.4: Small change to hopefully work with YouTube's SPF.
0.3.3: Now displays "No Thumbnails Available" if YouTube hasn't generated thumbnails for the video.
0.3.2: Now scrolls to the video when clicking a thumbnail. Fixed some issues with weird layout of the time links within the table cells.
0.3: You can now click on a thumbnail image to jump to that time in the video.