oech3 [1] filed a request to merge opera-ffmpeg-codecs [2] into chromium-ffmpeg-codecs [3]: chromium-ffmpeg-codecs covers more Chromium versions: electron31 --url https://tools.woolyss.com/html5-audio-video- tester/?u=woolyss.com/f/avc-aac-nerdist-friends.mp4 They use different sources. But source of opera-ffmpeg-codecs (https://chromium.googlesource.com/chromium/third_party/ffmpeg/+/refs/heads/m...) says The goal of Chromium's FFmpeg repository is to just be a mirror of the upstream Git repository. This means every change made must be upstreamed. [1] https://aur.archlinux.org/account/oech3/ [2] https://aur.archlinux.org/pkgbase/opera-ffmpeg-codecs/ [3] https://aur.archlinux.org/pkgbase/chromium-ffmpeg-codecs/