It's an interesting idea, I did some movies on super 8 once. I have a Bolex 16mm but the cost of film and processing is too much.
16mm is smaller than half frame 35mm (movie standard) I think from memory it was 10mmx7mm or there about.
During my early phographic career I processed 16mm for the BBC, if anyone is interested here is a snap or two of the processor:
Back in 1984....
Mark