Where can I find the source of this clip?

Its from a movie called Trans-Europ-Express (1966)
https://www.imdb.com/title/tt0061113/

She is Marie-france Pisier

you can see the above clip at 28:39 here
https://archive.org/details/trans-europ-express-1966

Its from a movie called Trans-Europ-Express (1966)
https://www.imdb.com/title/tt0061113/

She is Marie-france Pisier

you can see the above clip at 28:39 here
https://archive.org/details/trans-europ-express-1966

This will lead you to the source

Eros + Massacre Episode 11: The Labyrinth of Robbe-Grillet

https://cinepunx.com/eros-massacre-episode-11-the-labyrinth-of-robbe-grillet-with-christopher-norris/