Is there a way to make the cookie effect fade in with regard to opacity of the surrounding (black) region? And likewise fade out? I see you can key-size it, key-color it, etc., but I am talking strictly opacity. I do not even see the ability to adjust opacity. I would basically like the center-circle showing with the black surrounding region to gradually fade in on top of the already running video clip.
I have tried every which I can think of to no effect.
Is this even possible?
Thank you very much for your help.