This is real easy if the camera does not move.
Crop it out.
Mask.
Easier in AE in FCP.
If it’s still, heck, take it to PhotoShop. Even easier.
If you’re zooming in on the shot then, you’ll need to roto-scope, so to speak, mask out all the frames. I would do it in AE.
Chris Tompkins
Video Atlanta LLC