[jitter] Automated input switching?

Hi all.

 this is probably a pretty simple question(I hope), but as I am not yet very handy with Jitter I thought I'd throw it out to the forums as this is somewhat time sensitive.

 my girlfriend is putting together a video instillation for her senior thesis and wants to have an automation at the end of her video that would switch the input to the projector from her short video to a live feed of the room. So basically the video would run for 3 minutes, then she would like an automated switch to the live feed for 10 second then start the whole process over on a loop.

 i figured this should be pretty simple in Jitter yet I cannot seem to figure it out on my own. has anyone done anything like this with any success? the only other option i can think of is buying an outboard video A/B switch and setting the switch to a timer, but if it could be done internally all the better.

 thanks in advance for your help and consideration.

jason