Hey, last night I played with all the settings and I also figured out that it has to do with using 2-pass mode. In 2 pass mode I lose the last few minutes of the movie. Leave all settings the same but switch to 1 pass mode and the movie backs up completely. Then, if I leave it in 1 pass mode and mess around with all the other settings, it still works fine. That indicates to me that it is the 2 pass mode that is causing the error.