FFmpeg

3.4.8 is the latest possible version on CentOS7. if they want 4+, it needs CentOS 8

Centos 6

yum update
yum install epel-release

sudo rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el6/x86_64/nux-dextop-release-0-2.el6.nux.noarch.rpm

yum install ffmpeg ffmpeg-devel -y

CentOS 7

yum update
yum install epel-release

sudo rpm --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm

yum install ffmpeg ffmpeg-devel -y

Almalinux 8

dnf -y update
dnf install epel-release

dnf install --nogpgcheck https://mirrors.rpmfusion.org/free/el/rpmfusion-free-release-8.noarch.rpm -y
dnf install --nogpgcheck https://mirrors.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-8.noarch.rpm -y

dnf install ffmpeg ffmpeg-devel -y

Almalinux 9

dnf -y update
dnf install epel-release

dnf install --nogpgcheck https://mirrors.rpmfusion.org/free/el/rpmfusion-free-release-$(rpm -E %rhel).noarch.rpm -y
dnf install --nogpgcheck https://mirrors.rpmfusion.org/nonfree/el/rpmfusion-nonfree-release-$(rpm -E %rhel).noarch.rpm -y

dnf install ffmpeg ffmpeg-devel