Does someone archive found media as a fail-safe? For example, videos which resurfaced on YouTube and are the only copy in existence. What if the channel gets terminated or its owner decides to delete the video for some reason? Without some "internal" backup we're at the mercy of the channel owners or copyright holders.
Unfortunately, there is no failsafe. It's really up to each person's willingness to take the time and space to download and store the videos. And there's just *so* much to go through. Even episodes, one I'm even looking for right now. (The Itsy Bitsy Spider: Itsy's Favorite Haunt) which was on Youtube earlier this year, is now gone. The channel was terminated, and the episode, which was linked on the wiki for a decent time, is now gone again.
Damn, that's a shame. I have the same fear when a Wikipedia article links to an external site which may disappear sooner or later, and yet, the link leads to the original site and not its archived version (like on Wayback Machine or a similar site). It's like asking for trouble.
What bums me is that this site seems to treat the matter rather seriously, with all its purdy UI design and all. There are Discord channels, updates, scouring everywhere just to find a lost piece of media (which sometimes is not even that significant). And yet there is no official storage of found files. The level of effort put into keeping things seems disproportionately low compared to the effort put into finding them.
Also, archiving should be done right off the bat, when updating an article upon finding a piece of lost media. This would make the whole process way less tiresome.
When something is found, and it's put on YouTube, I do worry it will be taken down. It should be stored somewhere more permanent. That's exactly why I download and save it.
What you guys can always do is that you can download said video from YouTube, and then upload it to the web archive at archive.org. You'll need to make an account to upload, but unlike YouTube, it's MUCH less likely to get taken down through copyright, though it still does happen.
I remember I had uploaded two episodes of Audrey Hepburn's Gardens of the World to archive.org, but the unfortunate thing that happened there was that the producing agency apparently still cared about the work (something that wasn't entirely obvious like uploading a movie in full), and got in touch with the site to take the episodes down. On the bright side, unless your uploads are absolutely blatant breaches of copyright (such us uploading any movie made since 1970), your account will not face any penalties for them.
I've uploaded over 600 items to the site, most of which is copyright material in the technical sense, but a lot of stuff is considered "abandonware" where it's still legally under copyright, but the agency that owns the copyright won't go after the uploader because of the irrelevance of said uploaded item. A lot of lost shows and other materials (not all of course) work in a similar fashion though.