upcoming post...
i am currently in the process of digitizing a betamax tape i acquired several years ago.
the betamax was a competitor to the vhs in the late 70s and early 80s which ultimately lost due to recording capactity limitations and some other reasons. an often cited reason for the vhs having won the format war against beta was that ponography was only avilable on vhs. This fact is not true and my betamax tape is proof of that. although most of the tape is sfw, there is enough explicit content for it to be considered ponography.