so changing the language in "settings" → "general" → "site language" to a different language, clicking save, and then setting it back seems to do the trick.
hey ok afaik videos will not autoplay if they have audio, even if the video does not have audio, you will still need a "muted" attribute at least for html5 videos. maybe there is a muted attribute you can pass to the iframe like &muted=1 not sure!
