[mplayer/el8] (6 commits) ...Add AV1 support

Summary of changes: b28cfc2... rebuild for libdvdread ABI bump (*) c3bc8e9... Mass rebuild for x264 (*) 3bfbbd7... - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass (*) 8e8adb6... - Rebuild for ffmpeg-4.3 git (*) 5e35cdb... Rebuild for new libcdio version (*) 5a24c2d... Add AV1 support (*) (*) This commit already existed in another branch; no separate mail sent