Earlier quoted context omitted.
I'd look into youtube-dl. I tried all the parental controls on Youtube, Netflix, Amazon and devices only to finally realize that my idea of what's suitable doesn't have an equivalent rating. There are so many safe for any age videos that have a bunch of kids with the worst, most cynical attitudes and no respect for authority and then wholesome shows with "intense emotion" or whatever that get rated tv-14. So I downlo…
I've got an Intel NUC I could do this with. Is there a video player app for iOS that kids could use (i.e. Interface isn't super complex), that'd play remote media? Edit: Looked into this myself just now. VLC Streamer looks decent, as does Infuse by Firecore.
You could drag an icon to the desktop for an HTML page with thumbnails if it was necessary to get fancy.