I have been mastering 3.5 hr DVDs for a classroom lecture. Have done over 100 DVDs with 3.5 hrs, and the footage looks better than i ever expected. I use Vegas to render the mpg2 file @ a bit rate of Variable 4 high 2 medium and a 2 low. At these settings, i can get the quality i need and don’t have to re render in DVD architect.
J.