I’m pretty sure my father was using his 8mm movie camera into the early 70s before he upgraded to Super 8.
He and I would splice those 5 minute films into longer reels of about 30-45 minutes. He had an at home device to do so and edit out crappy scenes.
His brother was also a home movie nut and there are so many scenes of him and his brother filming each other.
I had about a dozen of those longer 8 and super 8 films transferred to VCR in the early 90s.
I suppose I could look into having everything digitized.