The good news it it can be made. You just need to know what you want in it. How much do you want on the actual device.

And how much can you do on the computer your connecting the switch to.

Have you tried looking a security equipment. There are video switches they use in the security field. Maybe one can be modified to work.

Cali Live on Location spells Cali LOL. Sorry someone had to say it

Cali have checked out www.smartavi.com/categor...

I always have mutiple boxes lieing around, could you have camera-pcs that send video to the mixing box via IP?

Yeah, totally! He would probably do it if you asked him.