Yeah, I think Firefox’s translation feature is technically still in beta.

From the SmartTube GitHub:

install Downloader by AFTVnews on your Android TV, open it and enter kutt.it/stn_beta or kutt.it/stn_stable, then read, understand and confirm the security prompts. (You can also enter 79015 (for beta) or 28544 (for stable), but this requires an extra step to install the AFTVnews Downloader browser addon if you haven’t already.)

The AFTVnews Downloader is available on both Google Play and Amazon Fire TVs. After installing SmartTube, it can self-update on its own without needing another app.

It supports casting via the YouTube phone app (or YouTube ReVanced app).

Kodi—It can connect to a media source via FTP, so I was able to effortlessly connected it to my online storage to download shows and movies from it to watch on the fly, and on my TV no less. Without that, it’d be a huge pain just to get the file onto my TV.

SmartTube—It’s an ad-free YouTube video app for Android TVs, and it has Sponsorblock included. You could say it’s YouTube Vanced for Android TVs.

Discord bots—I’ve setup my own personal Discord server (no other humans allowed in it) and set it up with various bots that do things ranging from posting tweets/ posts from Twitter/ Bluesky to letting me know when specific channels have uploaded a new video on YouTube or gone live on Twitch. I’ve also got another bot monitoring some RSS feeds.

Firefox has translation now, too, on both mobile and desktop.

And you can optionally add the Google Translate extension to desktop Firefox if you want. (It really is convenient, isn’t it?)

And you can always just plug in the URL of whatever page you’re trying to translate directly into https://translate.google.com/.