i.ytimg.com/vi/a_rrObR5YpU/maxresdefault.jpg

All about Thumbnail Images as ytimg maxresdefault

の動画のサムネイル取得が思った以上に簡単だった件

maxresdefault thumbnail · Issue #373 · nullscreen/yt · GitHub

All about Thumbnail Images as ytimg maxresdefault

All about Thumbnail Images as ytimg maxresdefault

thumbnails extractor

i.ytimg.com/vi/I4j4OGl_XHQ/maxresdefault.jpg