This is the first time I have ever had a problem with this program. I entered approx 20 short clips of various qualities, 352x240, 720x448, 352x480. Some were 16.9 and some 4.3. some MPEG 1 and some MPEG 2. I burned a DVD as always and it was fine. I since then purchased a DVD from company that sells old blk and wht silents. All my video software says this is a good video with no flaws and is commercial quality. I put 3 short, 3 second clips into the original timeline and now when I burn a DVD there is a small video and audio jump in two different locations. I gave the DVD to the studio here and they agreed it checked our ok. When I play the timeline with the clips its fine. When I burn it on DVD it has the two jumps. I am having some problems with windows and was going to re install, but does anybody know why this is happening? Is this a windows issue? If I take out the blk and wht clips, it burns fine. It's maddning. Thanks a million.