In French with no subtitles.
From a series titled Le Temps des Philosophes. 4. Philosophie et Vérité. Entretien entre Georges Canguilhem, Jean Hyppolite, Paul Ricoeur, Michel Foucault, Dina Dreyfus and Alain Badiou.
The original program was produced by Radio- Télévision scolaire in 1965 and released on VHS in 1993 by the Centre National de Documentation Pédagogique.
Foucault appears at 7 minutes.
I happen to own this video. The extra details not listed on the link page are from this.
With thanks to Dirk Felleman for this link.