DIY Video Switch by Konrad Zientara

https://www.youtube.com/user/wsadhu
"This video shows my first tests of analog video switching in sync with music.
The analog clock pulses come from arduino programmed to convert midi input to analog signals (CV, GATE, CLOCK, RUN/STOP).
The video switch itself and the output monitor have no v-sync therefor images in screen tend to be verticaly shifted. It should not be a problem with most modern signal recievers,
thou for fast switching a digital syncing of all signals can be added"