I use womble mpeg-vcr to edit out commercials and use DVD-Lab to author, but the GOP are tool large and get an error with DVD-Lab. I have used the GOP fixer in mpeg-vcr to correct this but the audio goes out sometime during the video. I can use tmpgenc DVD author and just ignore the GOP size and it plays fine, is there a way to ignore GOP size in DVD-Lab? or a wy to resise the GOPs in my file? I don't want to reencode, thanks for the info