I've posted the same question on another forum before realizing there was this forum http://forums.afterdawn.com/thread_view.cfm/166964 I've got an AVI which TMPGEncoder refuses to accept, it says something like it's unsopported. Although I can perfectly play the movie on MediaPlayer, for instance. I've processed the AVI again with VirtualDub and TMPG still refuses to recognize it. Any idea what to do???