Thanks for your help. I did exactly that, but my image (which is composed of graphical text and logos) still looks jittery, jaged, and with strobeing on motion.
These were my steps:
1. Exported a self contained, rendered file from a 72030p time line using current settings.
2. Imported this file into DVD SP
3. I used default bit rates, but I used 2 pass VBR. Motion estimation set to Best. Aspect 16:9
4. track= Display mode 16:9 letterbox
What the F Im i doing wrong?