I have a movie which is DivX5 and MP3 audio. It starts out in sync but later the audio goes out of sync. Figuring it was probably due to being encoded with VBR, I investigated further with MediaInfo. To my surprise it is in fact CBR. I have read the guides onsite mentioning how to use VirtualDub to adjust the framerate or an audio editor like Sound Forge to stretch the audio. Well, I tried the Virtualdub method but in order to sync things up it had to jack up the framerate to 834 fps!! Needless to say the video played very slooooowly. It seems the audio is quite significantly shorter than the video, by 1:39 (1 min. 39 sec.) in fact! Around the point where the audio started going out of sync, there doesn't seem to be a place to add silence. How can you fix that big of a length gap?