David W. Richardson
Chapelgrove Films
If you're going to try to go the compositing route, I don't recommend cutting out a square of green poster board and taping it onto the monitor screen, using that as your greenscreen. We tried that, and the problem was we wound up with a very sharp edge on our composited video, which we didn't want.
What we did was shoot the TV in the ditch. We turned that into a still -- a .BMP. In PhotoShop we created a green rectangle on a black background -- shaping and orienting the rectangle to match the position and size of the TV screen in our video. We gave the rectangle feathered (blurred) edges, and saved it as a .BMP. We composited the .BMP with our video footage, made a virtual clip, then used that clip to composite (as a greenscreen) the footage we wanted to appear on the 'broken' TV screen. Time consuming process, but it worked pretty well.
As we've said before, though, doing that kind of compositing pretty much requires that your shot of the PC monitor be a static shot -- no camera movement.
Good luck!
What we did was shoot the TV in the ditch. We turned that into a still -- a .BMP. In PhotoShop we created a green rectangle on a black background -- shaping and orienting the rectangle to match the position and size of the TV screen in our video. We gave the rectangle feathered (blurred) edges, and saved it as a .BMP. We composited the .BMP with our video footage, made a virtual clip, then used that clip to composite (as a greenscreen) the footage we wanted to appear on the 'broken' TV screen. Time consuming process, but it worked pretty well.
As we've said before, though, doing that kind of compositing pretty much requires that your shot of the PC monitor be a static shot -- no camera movement.
Good luck!