made with a video synthesiser, the EMS Spectron, by electroacoustic compoer Robert Cahen

(via Continuo's Documents, who via-d it from Video Circuits)

Continuo says RC was:

"a member of INA-G.R.M. from 1971-74, and later director of the INA-G.R.I., or Groupe de Recherche Image from 1973-76, a facility created by Pierre Schaeffer to produce experimental videos for TV programs"

cf Laurie Spiegel's work on VAMPIRE, an abstract moving graphics compositional system.  and connection to 1970s experimental television... . as discussed midway through my profile