for see 2 images in mirror, you can put the zoom of image at 50%, then use mirror effect, with these parameters: x 0.50 y 0.00 in/out 0.50 to see 4 images, same as before, but with y 0.50 to see 4x4, so 16 images, you have to add after mirror a videowall effect, with those parameters: opacity, scree...