May be the problem you are getting is about the audio. Get the latest version of TMPGEnc that is 2.56. If you have divX files with an audio frequency of 48000kHz, TMPGEnc doesn't convert to 44100kHz, but the 2.56 version does. But before you just need to extract the audio from the movie as it is with VirtualDub then load the audio at the other program, and the video will be a VDR file like "matrix.vdr".