Straight from DVD Studio Pro's help file:
VD Studio Pro accepts MPEG-1 and MPEG-2 video. MPEG-1 video is lower quality but takes up less space. MPEG-2 is higher quality and takes a moderate amount of space.
MPEG-2 is the most commonly used video format. You can export MPEG-2 video streams...
i thought w/ DVD Studio Pro your able to import Mpeg-1 Compliant video. I export as Toast Video CD, but yet I still cant import the Mpg's into DVD Studio Pro. Any suggestions besides converting to Mpeg-2
Sincerely,
Mel