AlmaLinux

EPEL

dnf install -y epel-release

Libvirt

dnf install -y virt-manager
systemctl enable --now libvirtd
usermod -a -G libvirtd username

Multimedia

dnf install -y epel-release
dnf makecache
dnf config-manager --set-enabled crb
dnf install -y distribution-gpg-keys
rpmkeys --import /usr/share/distribution-gpg-keys/rpmfusion/RPM-GPG-KEY-rpmfusion-free-el-$(rpm -E %rhel)
rpmkeys --import /usr/share/distribution-gpg-keys/rpmfusion/RPM-GPG-KEY-rpmfusion-nonfree-el-$(rpm -E %rhel)
dnf --setopt=localpkg_gpgcheck=1 install -y https://mirrors.rpmfusion.org/free/el/rpmfusion-free-release-$(rpm -E %rhel).noarch.rpm https://mirrors.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-$(rpm -E %rhel).noarch.rpm
dnf -y group install multimedia
dnf -y install ffmpeg ffmpeg-libs ffmpeg-devel mpv --allowerasing
dnf -y group install sound-and-video

Sources - https://wiki.almalinux.org/series/system/SystemSeriesA05.html - https://wiki.almalinux.org/documentation/epel-and-rpmfusion.html