This is driving me crazy trying to research into this, I'd love this exact thing.
My main page contains many image blocks, a sort of folio, each image has caption overlays on hover with a click-through that takes you to the relevant page.
I'd love each image block to have an autoplay-video-on-hover function, that also displays the caption.
I've found custom CSS that auto-plays videos, but only from a video block. Video blocks do not have any 'click-through' options available to go to a descriptive page, at least on the template I'm using (Flatiron). Maddening.
I cannot find a straight forward description of how to achieve auto play video on hover (from an image block) anywhere.
Any help/code is greatly appreciated!