Sorry about that, I think I got the terminology confused. What I was trying to say, is that when I add effects, do compositing, etc, would it be ok to work with it in its original mpeg-4 format.
Adobe Premiere will not regognize it, so I will have to render it out as something else. I usualy use Premiere to do my final encoding with audio and whatever else needs to be done. What format should I render it out of AE as? Premiere wont import the mpeg-4, so should I render it out as uncompressed, mov, image sequence, etc?
It will be burned to a DVD, so I do not want to lose any quality.
Thanks for clearing that up.