[ffmpeg/f34] (10 commits) ...Update changelog

Summary of changes: b17e48b... rebuilt (*) e65ba60... Enable most unused build requires for fedora excluding i686 (*) e543913... Rebuild (*) 7bb9c11... Fix vmaf model name (*) 77fb218... Rebuild (*) f72ad3a... Add recommends for vmaf (*) 1d5ba9c... Rebuilt (*) ac18ba3... Rebuilt (*) 8bf43df... Enable AMF support (*) 7002625... Update changelog (*) (*) This commit already existed in another branch; no separate mail sent