On V1 I have a clip of an animated phone interface w/ graphics. On V2 I have a hand holding a prop phone that has a green piece of paper as it's screen.
I want to add a key to V2 so I see through the phone screen to the graphics on V1, but there's other green in V2 elsewhere in the shot that's causing problems. I need to limit the key effect to just the region of the phone screen, but the screen moves around in the shot as the talent flicks through menus so a rectangular "region of interest" isn't enough. Is there a way to corner pin / match move the key so that it follows (and is limited to) just the screen?
I also have Avid MC6 and BCC 8 if that helps.
I tried a couple different BCC keys but they either seem to track OR key, not both.