Just trying to see if anyone is getting the same results, it only on files that are longer than apprximately 55 minutes. Something weird happens to the audio, sounds like 2 audio channels overlap, one channel that corresponds to the picture perfectly while the other audio channels is from later in the file. After a few seconds of this adio overlap, the audio goes back to one audio but the wrong one, it stays with the audio channel that is ahead of the video and the audio that is in sync with the video disappears. This problem occurs on the three movies i encoded at aproximately 55 minutes into the movies. I only used XVID, which could be the problem. Just wanted to know the results of others who encoded files longer than 55 minutes with XVID or DIVX, on wheter or not they are having the same problems.