I use Ulead DVD Movie Factory v1 for my DVD authoring and it won't accept different aspect ratio MPEG's in the same project, so I used DVD Patcher to reset all the AR's to 720x576 16:9 for authoring. Now I need to know how to reset the file back to 4:3 AR in the finished Video_ts folder. I tried using IFO edit but got nowhere (and also lost my menu). What is the correct procedure to get different AR MPEG's onto the same DVDR disc?