This is a "quick" test of the Inogeni SHARE2U usb camera combiner.
It allows you to take 2 usb cameras - so webcams or whatever else you have with a USB stream out. and combine them into a single usb stream.
You can use the device to switch between 2 cameras, or show both cameras at the same time.
It's pricey, but it definitely has some uses in a classroom capture environment.
I hope you like the video.