To be fair, I am traveling and haven’t looked for solid evidence or citation that this works for people, but I personally like this approach: in lieu of a separate language selector button, each option here itself is both a language selector and a commit button.

The labels themselves are not the name of the language, but a call to action; I imagine recognizing the one label that means something to you should be easy if the other nine look like gibberish.

And, a thoughtful moment by one exhibit: Not only showing you where you are in the sequence of three videos, but even within the currently-playing video.

(I’m less of a fan of stretched type, though.)