compressed Video on Digital Audio cassettes!

https://m.youtube.com/watch?v=mOug4t5r0P4

contain link to blog and supposedly github sources, too! Nice use of digital i/o.

http://www.theresistornetwork.com/2019/02/datvideo-storing-video-on-digital-audio.html?m=1

https://github.com/aarossig/datvideo

Under Linux.