@kinoe I am unable to replicate this. Maybe try clearing your package cache?

Validation error: sha256:b267069921b27e3eaa42c20ff300236092ddd68a625783cd697ddb98d76f0df7 in PKGBUILD 821ead210840f3aa9d4e36133333b17d47446cc5592a054ee37f4be8d3ad2206

@garfieldairlines I've changed the ffmpeg dependency to ffmpeg4.4, and libmfx is a dependency of ffmpeg4.4. Thanks for pointing this out!

I would add "ffmpeg4.4" and "libmfx" as dependencies (also a dependency on firefox) or else some videos won't work. If someone with more experience agrees with me and would do it for me (I am still a bit inexperienced in AUR).

@maki_nori Added, should be up soon.

Would it be possible to add StartupWMClass=firefox-default to the .desktop file? That way the icon properly links to the executable in GNOME and such