During the transition period between the old media and the new, they'll have the opportunity to transfer everything. We had VHS tapes for our family videos. No

During the transition period between the old media and the new, they'll have the opportunity to transfer everything. We had VHS tapes for our family videos. Now we have them as video compressed with h264. If that format is getting phased out, we'll just transfer to the latest format. Some degradation may occur when switching codecs, just like when transferring from VHS to digital, but that's fair. You don't have to come up with a solution that lasts 80 years. You just need to survive 10-20 years until you transfer to the next media that makes sense for you. Keep redundant copies off-site.