Burning a dual layer back up of a dual layer DVD I am experiencing shaking, or shuttering, during scenes where a significant amount of panning is involved. This occurs regardless of the scene (that involves panning) and doesn't appear to get better during the course of the movie. As the picture pans faster it gets choppier. By choppy/shuttering/shaking I mean that it shakes up and down quickly like it's almost got a vertical sync problem. However, this happens in any dvd player I can find but not in any PC, where of course it plays perfectly. I tried to compress it with DVDRB using HC encoder but the same problem occurred, although not as harsh. Is there a frame server I need to run it through? What's going on here?