Enable non-free ffmpeg on Fedora

Some multimedia codecs are not delivered by default with Fedora, because they are not open source.

These are packaged in the non-free RPM Fusion repos.

Check out this article on how to enable RPM fusion: https://docs.fedoraproject.org/en-US/quick-docs/rpmfusion-setup/

After this you may want to check out this article on how to replace various libraries: https://rpmfusion.org/Howto/Multimedia