How to "transfer" jit.gl.camera view from one context to a second context ?

Hi All,

I would like to achieve the thing below :

A first scene in a jit.window (context #1) with four jit.gl.camera shooting details of the scene and a second jit.window (context #2) where are played texture from the cameras in 4 videoplanes.
I suppose shared_context, jit.gl.node could be my friends, but for the moment it's wide of the target.
Maybe anyone has suggestion to find the right track ?

Thanks,

Pry