Interactive video installation

Hello!

Im trying to do a video installation and basically i have two diferent videos and i want mix them around the Sillouette of the visitor, like an “aura” what works as a mask to let see through, i attached a patch (please feed some videos)

My english its not good so ill try to explain in other way

I have two video layers and i want what the first layer be always visible and the second layer stay running underneath, i have a camera to record the visitors, each time what a person its detectes i want what shape like an “aura” let see the second layer during the time the visitor stay in front of projection.

somebody, if you understood me, could check my patch and give an advice?

video-space.v4p (19.7 kB)