I have a similar issue. I convert .avi files to a file version (.mp4) that can be played on my Ipod/AppleTV using the
Xilisoft Video Converter for the Mac (cannot find any other software to do this on a macintosh). If the .avi video file runs more the 23 minutes or so (typical length of a 30 minute TV how) the audio and video get out of synch (the longer the video file the worse this gets). The original .avi files do not have this problem as I have watched them also on my computer as a test but prefer to watch the TV shows on my television without having to burn a DVD. Anybody have any ideas? Thanks in advance.