Except for maybe cheap DVD's. those are only expected to last 5-10 years. Probably the same for BluRay (although I wouldn't bank on that long term). Most magnetic tape should survive, I have 20 year old VHS tapes that still play, in fact I just converted wedding footage from 1982 last year, crappy footage but that was from the original equipment (not enough light), not deterioration. Throw in a camcorder, that should cover your. Or better yet, a hard drive media player, I'm doing all my digital archiving on hard drive now. The tv interface is not going to change in 16 years, and if it does then there will be adapters. Or at the least a coaxial equivalent terminal. Our tv sets run off of the same inputs as used in the 50's.
If you really want a long lasting medium, may I recommend film. You should still be able to get 8mm film, I have some 8 and 16mm going back over 50 years, properly preserved there is no deterioration. Just include a small projector. Pictures on good quality paper also survive decades (not inkjet, get them professionally made).
Or, you can always wait another year for the 1000 year archive dvd, throw that and a small dvd player in. Even if the format changes all you need is electricity.