This video demonstrates a modular synthesizer sequencing video along with sound.

Details below.

via bubagoo:

modular synth + arduino micro controller + MAX/Jitter video player.All of the sound is coming from the modular synth. The analog sequencer is sending a varying voltage to the arduino which is communicating with the computer and tweaking a video player I made in Max.The video is a promo clip from a balloon enthusiast website.