I like to play my XviD's on muy stand alone player (Yamaha s550) Now I have some XviD that isn't playable on my player because they include consequtive B-VOPS and "packed bit streams" and my player only support one B-VOP without "packed bit streams". I only have the XviD file not the original. I found a tool to unpack the bitstream (MPEG4 Modifier). But I am still stuck with 2 consequtive B-VOPs. Is there a simple way to reencode this without loosing any quality.