Interesting.
Thanks
Then there is the issue of play back. Good luck trying to find a CD or DVD drive in 20 years.
Storage is very important for writeable disks. Cool and dark.
And the file formats will be different then too. Will JPEG or MPEG be readable in 20 to 30 years. Lets hope so.
Requires maintenance and update every few years. Check, back up, verify, check and update if necessary.
Ironically, low technology is the best way to go. Photographs.