@Iggy_Drougge
I don't see the point. There are already players for those formats which are playable on 68k Amigas.
On MOS, I had IBrowse configured to use MPlayer to play YouTube videos, WMVs, etc. -- there is NOTHING currently available for 68k Amiga that can do that.
I know that MPlayer doesn't play the absolute latest versions of WMV files, etc. but I never personally came across any videos that it wouldn't play -- so in 'real world' use it worked great for me.