This has a large collection of early films of ethnographic interest, many of which have been digitized. The latter can be viewed for a modest fee at the Bibliothèque nationale François Mitterand (BnF) in central Paris, as well as at various points elsewhere in France.
Films that have not been digitized have to be viewed at the central film archive, located in a disused fort at Bois d’Arcy, close to Versailles and a 30-minute train ride from central Paris.
There is an on-line catalogue that can be consulted beforehand here.