i am trying to put several mpeg-1 files on a dvd. when i create the dvd folder with the vob files most of the videos are fine except two of them are out of sync. ive read some posts about this and it looks like this is usually caused by bad frames. i checked the video files in virtualdub and it says there are 0 bad frames. ive tried encoding to mpeg 2 files with tmpegenc. i have even tried demultiplexing and remultiplexing the audio and video streams just to see what would happen and even that got the audio out of sync. all these files are from the same source and work fine before i do any converting or encoding. so how can i find out what the problem is? how can i find out what the difference in these two videos are? thanks for any help you can give.