Hello Steve,
I guess installing ffmpeg-libs from epel-release should help fix this. Give it a try.
sudo dnf install epel-release
sudo dnf install https://download1.rpmfusion.org/free/el/rpmfusion-free-release-9.noarch.rpm
sudo dnf install https://download1.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-9.noarch.rpm
sudo dnf install vlc – in case the epel repos would have an updated version etc.
sudo dnf install ffmpeg-libs
Hope this helps.
Cheers!