Hi , Im having trouble with Virtual Dub. I'm using version 1.3c and trying to convert a .asf file but each time I open it , it reconstructs the index block then says "Couldn't locate decompressor for Format MP4S"{UNKNOWN}. I tried downloading the media player tools like it said in the other post but it didn't help. What should I do? Are their any other programs I can Try other than TMPGEnc cause that wont work either. Thanks