That was fun to watch, thanks for the link.
I can bet collecting film, especially nowadays, is expensive.
I can remember in school the teacher having to thread the movie projector sometimes, before vhs came out and the schools got those. Sometimes the teacher would let us watch a bit of the movie, once it was over, going backwards. It was pretty funny to watch video backwards as I recall.
16mm is what most home collectors had. I think there is 32mm but I don't know much about those or what the difference is, its' size or resolution or both. And the avgn (whatever his real name is, can't remember) mentions 8mm once I think.