What does DivX Doctor do to an AVI file?
DivX Doctor II first extracts the audio track, then the video, then, in QuickTime Pro terms, adds, rather than adds-scaled, the video to the audio. If you save as a dependent file, the Doctor creates a .MOV with the entire audio track but with a link to the video of the original .AVI If the “flattening” process takes too long or hangs indefinitely, try saving as dependent, then opening this file with QT Pro and saving again as self-contained movie.