Face Tracking on a Rectangle/Plane

I’m trying to create a computer-style effect where one of the windows will focus on the lips or eyes.

Is it possible to create a plane or rectangle where the texture is on the face but focus primarily on the lips or eyes? I tried using Fit2Rect but it’s not working for me.

Can you share some sketches or other reference? I’m not clear on the concept.

I’m also not sure I completely understand what you’re trying to achieve.

To isolate the mouth and the eyes however you can also create several facemeshes on which you apply alpha maps to keep only what you want. By not putting the facemesh items inside of a facetracker but rather putting them as children of one of your scene objects, you can anchor these elements where you want in your scene. Hopefully this is more or less what you meant