fullscreen aspect ratio respecting video in reveal.js [hack]

truncated_reveal.js

[...]

function startEmbeddedContent( slide ) {

[...]

if( el.hasAttribute( 'data-autoplay' ) ) {
  
    // paste this above el.play()
		var nw = el.videoWidth,
		nh = el.videoHeight,
		es = Math.min(nh / nw),
		elheight = Math.floor(document.documentElement.clientWidth * es),
		videoPosX = 0 - el.parentNode.parentNode.offsetLeft,
		videoPosY = (0 - el.parentNode.parentNode.offsetTop) + Math.floor((document.documentElement.clientHeight - elheight) / 2);

		el.parentNode.setAttribute('style', 'top:0px; left:0px;');
		el.setAttribute('style', 'max-height:5000px; max-width:5000px; position:absolute; top:' + videoPosY + 'px; left:' + videoPosX + 'px; width:' + document.documentElement.clientWidth + 'px; height:' + elheight + 'px;');
		// end paste		
		
		el.play();
}

[...]

function stopEmbeddedContent( slide ) {

[...]

if( !el.hasAttribute( 'data-ignore' ) ) {
    // paste line below above el.pause
		el.style.display = 'none';
		// end paste
		el.pause();
}

[...]