Background Video Autoplay on iOS on Squarespace

Autoplay has always been disallowed on iOS, but is now possible (since vision 10) if there is no sound. I need to get a background video to loop on the home page, and play on iOS. Would like a play button to be able to launch a version of the video that plays sound. when I click the play button, I would like the video to take up the full screen, like a Lightbox

my website is theprinceali.com