i.ytimg.com/vi/e0rUUg9dCow/maxresdefault.jpg

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

maxresdefault Problem

の動画のサムネイル取得が思った以上に簡単だった件

All about Thumbnail Images as ytimg maxresdefault especially in Search

thumbnails extractor

How to get thumbnail images in just 1 click - HANDS ON tek

How to get HQ thumbnails? - Stack Overflow

php - Fetch highest thumbnail resolution - Stack Overflow