Live Video wide screen with dl3

I have a client who wants to play recorded video using dl3 blended over a wide screen. They are trying to decide on a 3 screen or 5 screen. Per the collage layout chart to create content for those configurations, 3 screen content would be 1648 x 472 & 5 screen content would be 2048 x 360. How do I make standard def. 640 x 480 look good spread across 3 or 5 screens. Is it possible?