I think the project will be mastered onto a DVD for playback.
I won’t be doing this but I need to provide a movie file in the right aspect so they can make the DVD.
It sounds like what you are saying is
1.to create a 16×9 comp in after effects
2.drag and drop my 4×3 footage into that comp.
3.fit the 4×3 video to the comp
4.render it out as a quicktime movie
5.deliver a finished quicktime movie to client
Didn’t get the point about the 1 pixel shift???