Green screen tracking
So ive been working on greenscreen footages lately, there is an idea i came up with but i can't render it out on hitfilm after many attempts and research of this forum.
My character has a fake guitar made out of carton and of course painted in green.
I want to replace that fake guitar by a one made out of particles, so ive created a plane with a mask that has the same shape, then ive added atomic particles to it.
My problem is that i can't find a way to track it, so it will follow the original fake guitar.
Thank you for your help !