i.ytimg.com/vi/ECBxBCt2Fg0/maxresdefault.jpg

] Thumbnail download fails completely if maxresdefault.jpg is not available · Issue #21588 · ytdl-org/-dl · GitHub

thumbnail link doesn't work in all cases - Stack Overflow

i.ytimg.com/vi/T3JLx3qmQkw/maxresdefault.jpg, grab pack

i.ytimg.com/vi/T3JLx3qmQkw/maxresdefault.jpg, grab pack

i.ytimg.com/vi/T3JLx3qmQkw/maxresdefault.jpg, grab pack

maxresdefault Problem

i.ytimg.com/vi/T3JLx3qmQkw/maxresdefault.jpg, grab pack

get-thumbnail option gives url to broken images. · Issue #402 · yt-dlp/yt-dlp · GitHub

Getting all the video thumbnails from a video