Xvid Plus allows for 99% video play, including DVD play, and it's always up to date with the latest codecs.
Xvid Plus Plays all popular file types including:
XviD, H.264, FLV, WMV, DivX, AVI, MKV/MKA, x264, Real, RM, HD-MOV, MPEG-1, MPEG-2, and MPEG-4.