It's one of the three Jacquet-Droz automata
https://en.wikipedia.org/wiki/Jaquet-Droz_automata . The clip is from the 2013 BBC documentary "Mechanical Marvels: Clockwork Dreams"
https://www.bbc.co.uk/programmes/b0229pbp , written and presented by Simon Schaffer. I should probably have linked this slightly longer clip
https://www.bbc.co.uk/programmes/p019ng2n instead.