ok im trying to make back ups of my dvds so that i can let my friends borrow them without having to worry about them getting destroyed. the first couple of dvds i burned played fine but then almost every single one after that the sound wouldnt be in sync with the video. it is pretty frustrating trying to watch a movie that looks almost like it is from japan. i am using windows dvd maker and the type of file i am using is mpeg-1. please help!!

I stick to using WINXP X64 for any video editing/encoding stuff. WIN VISTA doesn't work well due to incompatibilities or
the way it tries to handle non-standard formats and codecs. Badly synced files are usually due to badly encoded source files or the computer
system or software decoder getting tripped up.

Have you tried 3rd party converter/encoder or identifying codec in source file? There are some software that can correct video/audio lags, but they often involve re-encoding or extra transcoding. Windows DVD Maker is pretty "mickey mouse", so don't expect consistent, great results on all conversions.

Good luck!