(Comment 3 / 3) And finally, after some more tests it turned out that some videos have almost 2x bigger .webm variants than .mp4 so I had to extend my yt-dlp c

(Comment 3 / 3) And finally, after some more tests it turned out that some videos have almost 2x bigger .webm variants than .mp4 so I had to extend my yt-dlp config like so (only showing the prioritization options here, my previous full config is still there upthread): --format 'vcodec=av01/bestvideo*+bestaudio/best' --format-sort 'quality,res,fps,hdr:12,vcodec:av01,channels,acodec,abr,asr,proto,ext,hasaud,source,id' --prefer-free-formats This: 1. Prioritizes AV1 (because it's gaining more and more hardware support, is very efficient and is not license-encumbered) 2. Prefers the free formats 3. ...but still uses a non-free format if it's smaller. Or at least that's what I believed in after testing on 7 videos that have obvious winners either way.