I don’t think they’re attached to YouTube too rigidly. (Well, I hope at least.) In theory this should work with any platform that provides subtitles. But I think if YouTube falls, or blocks their API access, they would just start hosting the videos themselves.
Yea YouTube is only one format we support. Users can also upload pdfs, mp4, docx, pptx, etc. And we already do support video hosting ourselves. It wouldn't be great if YouTube decided to part ways with us, but we'd be just fine.
> In theory this should work with any platform that provides subtitles.
Streaming platforms can vary quite a lot in how they choose to distribute subtitles. I've worked with scraping subtitles from both Youtube and Netflix and I will say that these platforms distribute subtitles very differently!