Eurorack analogue video is a thing. If you’re into learning more about modular synths I can highly recommend the docu-movie “I dream of Wires”.

Yes, an excellent film!

It’s all just voltage, but obviously with video oscillating at much higher rates.

You use most ‘audio’ modules with video modules and vice versa. All the typical logic works like divide, mult, add, etc.

It’s a really fascinating format!