Now it's just a beta version so there is no subtitles feature at all. But yeah I'm gonna use an existing library which can handle not only eng.
EDIT: The video in the main age does not have audio!!! Add some audio to it, that can be unmuted. (I hate autoplay with sound.)
EDIT2: Don't put a question in the title here unless you really want to make a question. The preferred style is something like "Twiso: Podcast to video tool" (I removed "to drive engagement, because I like a dry style in the titles.) Anyway, it was interesting so I forgot to complain about the title in the first comment.