I have a problem. I want to change green screen to another video.
I have a video where a guy sits near a monitor which has green screen. How do I change the green screen to other video so it looks like he's watching the other video?
If the camera isn't locked down, you'll also need to do Motion Tracking to make the image move with the monitor. Here is a tutorial from Boris TV on using the Corner Pinning plug-in in Boris Continuum Complete with Vegas Pro:
In the second halt of the video I replace a road sign that's moving which might be similar to what you want to do.