[1960s-70s] Black & white movie/show: people killed and turned into bread/loaves, floated down a sewer or river, creepy man collects them
Trying to identify something I saw as a kid, probably between 1967 and 1973, on TV in Saguenay (Chicoutimi area), Quebec. It may have been in French or dubbed into French. I honestly don't remember the language.
I remember it was black and white, people were killed and then turned into bread or loaves of some kind, and the loaves were sent floating in a sewer or river, where a man would fish them out of the water.
I'm not sure if it was a movie, a TV episode, or part of an anthology or kids' program. The local stations would have been Radio-Canada (CBJ) or CJPM.
Could be a European film, a fairy-tale adaptation, or a short segment on a bigger show. Any ideas appreciated, even partial matches! This scene has stuck with me for years but to this day have no idea.