For example File:Weiche EP-Express Animation.webm was originally uploaded with AV1-codec and later replaced with a revision upload with VP9-codec as thumbs are not displayed with AV1-codec (visible in upload history: AV1-revision has no thumb image)
Description
Description
Event Timeline
Comment Actions
If this helps, I can upload more AV1 media for testing purposes, of various lengths, resolutions, bit-rates etc. Just let me know what you need.