One of my favorite podcasts did a whole episode about this: https://srslywrong.com/podcast/232-i-hate-mondays/

Portable as in accessible outside the home network? That’s one nut I could never crack with port forwarding etc.

I’ve been using JellyFin for sometime but I don’t have a docker image installed. What purpose does it serve?

It’s not quite as slick as NewPipe, but for iOS you can use Invidious or Piped.

Correction: I just tried again and viewed the post on Mastodon. The alt text does appear there, so the code does work. Just not when viewed on Friendica. Am I just looking in the wrong places? Or does it just not display natively?

Thanks for the info about BBCode. I didn’t know about this option before. However I can’t figure out how to implement some of it. I was testing out alt text and am pretty sure I was formatting the BBCode properly. Once I created the post, it would display the image but I could never figure out how to view the alt text. Do you know how to implement it?

The only difference I’ve ever noticed between Invidious instances is some allow downloading and others don’t. If you like having the option to download, you could seek one of them out.