My home made movie has the umbrella of the light showing in one top corner. If this were a photo I could brush it out. Can you do the same in a movie? I heard that if you use a green screen, you dont need it to be full width as long as it covers the actor, because you can simply extend the green to full width afterwards. Again easy to make wider and then fill in Photos. This is using all the latest OSX, iMovie etc, doing a studio shot.