All of these are great points and are helping a lot.
The body double idea … great idea but I’m afraid we don’t have the manpower to do so. But its something to keep in mind.
If difference matte is the way to go, I’ll search on line for difference matte tutorials.
Question …
for the clean plate … would you film the empty scene? or take a snapshot photo of it and use that for the source matte?
Music Producer dabbling in Video.
FCPX. Adobe CS6.
Canon T4i.