Republic of the Congo

With a name unhelpfully similar to that of the neighbouring Democratic Republic of the Congo (and, like many places with 'Democratic' in their name, that Congo isn't remotely democratic) most search engines confuse the two (as do many, many IMDb entries).

The capital of the Republic of the Congo is Brazzaville, which is where the heart of their film industry lies, although finding physical releases with (hopefully) English subtitles is proving tricky.

These are the titles I know have probably had releases:

La rançon d'une alliance (1974)
La chapelle (1980)
M'Pongo (1982)
Voyage à Ouaga (2001)
Sida...venture (2007)