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LG stops making Blu-ray players, marking the end of an era — limited units remain while inventory lasts
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
One that is capable of burning M-disks. They are available in sizes up to 100gb and are supposed to last a few hundred years. They can be read by most Blu-ray players made after 2011.
https://en.m.wikipedia.org/wiki/M-DISC
Of course, this is more suitable for genuine family photos and videos. For "family photos and videos" you could use any Blu-ray disk, but I doubt it's the cheapest way to store them.