This circuit is simply three Chua chaos circuits and two CGS mixers. The X outputs of each chaos circuit are fed to one mixer, Y outputs to the other.
The three chaos circuits have slightly different components, so each behaves a little differently. They all oscillate quite slowly, from 10Hz to less than 0.25Hz. The outputs are useful as CV signals for meandering patterns. The short vid gives some indication. I quite like this kind of circuit, it is very nice to just let it play away without interference.
There are plenty of Chua circuits online, have a google to find one you like, all op-amp versions are probably easiest. The CGS mixer is here