Kinect 360 and 1x2 canvas aspect ratio

Hi, could someone tell me how to use kinect to cover the entire canvas with a 1x2 aspect ratio in the render window? I definitely need two or more kinects, but how do I connect them so that they cover the entire render window? I mean a point cloud with instance geometry. I want to display it on a led wall with a 1x2 aspect ratio, but the kinect has probably only 640x480 (4x3?) Resolution and is not enough to fill the entire space.