The majority of sync problems are due to either a bad source video (usually downloaded from the web), a bad capture of the video (cheap capture device), hd not defragged before capturing, too many tasks running on pc while trying to capture, or from bad media (cheap crap), or from the actual encoding software. If you are sure that your source file is good, I would start by defragging your hd, recapture the source with all background tasks shutdown, then encode and burn to a good quality media such as verbatim (mcc), or taiyo yuden. If that doesn't help, then try a different encoding software. (If everything is in sync when you play it on your pc, then it is most likely the encoding process, or the media.