It appears to be from the following broadcast (source):
ARTE (FRANCE TÉLÉVISION - LA CINQUIÈME) Émission « Archimède » du 14 novembre 2000 consacrée à Bourbaki, réalisée avec la collaboration de Maurice Boulanger et Pierre Samuel. On a présenté de courts extraits de films d’amateur tournés par Pierre Samuel, ancien membre de Bourbaki, durant divers congrès Bourbaki. Mise en
ligne d’un résumé de cette émission
http://archives.arte-tv.com/hebdo/archimed/20001114/ftext/sujet5.html
Which (roughly) translates as:
ARTE (FRANCE TÉLÉVISION - LA CINQUIÈME) "Archimedes" broadcast of November 14, 2000 dedicated to Bourbaki, produced with the collaboration of Maurice Boulanger and Pierre Samuel. Short films of amateur films made by Pierre Samuel, a former member of Bourbaki, were presented during various Bourbaki congresses. Online summary of this show
http://archives.arte-tv.com/hebdo/archimed/20001114/ftext/sujet5.html
The online summary is no longer available, but has been archived by the WayBack Machine. Sadly it seems to date from 5 years after the broadcast and doesn't seem to mention the films at all.
I couldn't find the broadcast online either, though it may be possible to contact Arte directly to enquire.