-------------- On openSUSE Tumbleweed --------------
$ sudo zypper addrepo -cfp 90 'https://ftp.gwdg.de/pub/linux/misc/packman/suse/openSUSE_Tumbleweed/' packman
$ sudo zypper refresh
$ sudo zypper install --from packman ffmpeg
$ ffmpeg -version

-------------- On openSUSE Leap --------------
$ sudo zypper addrepo -cfp 90 'https://ftp.gwdg.de/pub/linux/misc/packman/suse/openSUSE_Leap_$releasever/' packman
$ sudo zypper refresh
$ sudo zypper install --from packman ffmpeg
$ ffmpeg -version