Information to the footage: I have hide the image, but I will explain it in words... So, in the image, I'm staying on the green screen, left and right a part of my room.
I have a green screen footage, where I will key out the green screen, when I key the green screen out it works fine, BUT then I make a mask, to hide my apartment and then when I insert a Invert-Node the complete footage is disappearing... :(
what I make wrong?
here is my node setup.