I know in After Fx CC we have the mask tracker and etc, but that is not my point.
Let's suppose we have a static-shot-clip, that the camera does not move (the background is static) and there is a person in it. I want to mask the person (moving object/image) to apply a effect (in the person or in the background, this doesn't matter). EXAMPLE BELOW.
Is there any plug-in or effect that does that?
Here's a example of a bad tool my OSx offers. First it asks me to get out of the frame so that it detects the background and then when I come in it looks like that: