This is something you need to think about when publishing, whether it could be used in movies. It is not worth the hassle to get some deal, because you won't see a dime. WS have not reached that level to where they can engage in free market trade with you, they still think of you as a slave.
I have shelved a couple of projects until I can leave the U.S. because it is horrible. I just got some death threats today on Memorial Day that I yawned at, I wish I could just break a fool neck that does this retarded shit.
Instead of getting paid, you could trigger suffocating surveillance and they may even kill you.