here is a good question when i encode a video for example i did shreak and the video is fine till i add auido to it and then i get a video that plays at 60fps when the auido is not on its 30fps any why i know that all the auido is in the mp3 track but when i use vdub to add the track it changes the frame rate and i only get aobut 48 min worth of sound throght out the whole movie so i tryed to encode the sound from a wav with vdub and that wont work at all .. i have ripped the ac3 from the vob several times and the vob from dvd seviral times also any ideas here????