I am using the same system I have used previously. Output 1 splits to the monitor and to the CIB converter to RGBHV and from there to two DL1's. Outputs 2 goes through a converter to S-Video and feeds into the house projector.

The stock content is 640x480, and looked fine last year. I asked my designer to get me some samples in this size and the generic Quicktime (most universal) format.

I expect this would do for my application. These are background images for a christmas show.