How to use microfilm
This shows how to use microfilm, which lacks the sprocket holes.
Get a cheap camera to remodel.
Cut down the sprocket claws with a nail cutter.
Apply synthetic glue on it to get enough friction.
If needed and possible, drill a small hole to the spool (right ) and pour a small amount of glue to enforce the friction. For Canon AE-1 and AV-1, the rotation is on the opposite side to the expectation. So this does not work.
With this cheap improvement, a small film camera can make as good images as the ones 6x9 can make.