The Media Overlay component was preventing videos from sites like imgur from displaying on our forum. We fixed the issue by removing video from line 103, i.e. changing $('iframe, video, .lazyYT', $elem) to $('iframe, .lazyYT', $elem)
function addOverlays($elem) {
$('iframe, video, .lazyYT', $elem).wrap("<div class='media-overlay-eligable'></div>")
Now we have imgur videos working again, and the overlay still works with iFrames and lazyYTs