It's just a guess, but he could be referring to the stop motion animation movies that were popular in the 60's. Ray Harryhausen famously made a career out of the technique.

https://www.youtube.com/watch?v=VkLEZSWe5u4

Gumby and Davey and Goliath come to mind.

Bagpuss, The Clangers, Ivor The Engine, Trumpton, Camberwick Green. The UK was full of this stuff in the late 60s and early 70s