JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//cdn.rawgit.com/mrdoob/three.js/master/build/three.min.js"></script>

<video id="video" loop crossOrigin="anonymous" webkit-playsinline style="display:none">
  <source src="//cdn.rawgit.com/mrdoob/three.js/master/examples/textures/sintel.ogv" type='video/ogg; codecs="theora, vorbis"'>
  <source src="//cdn.rawgit.com/mrdoob/three.js/master/examples/textures/sintel.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
</video>

<div id="overlay">
	<button id="startButton">Play</button>
</div>

CSS

body {
	margin: 0;
	background-color: #000;
	color: #fff;
	font-family: Monospace;
	font-size: 13px;
	line-height: 24px;
	overscroll-behavior: none;
}

a {
	color: #ff0;
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}

button {
	cursor: pointer;
	text-transform: uppercase;
}

canvas {
	display: block;
}

#info {
	position: absolute;
	top: 0px;
	width: 100%;
	padding: 10px;
	box-sizing: border-box;
	text-align: center;
	-moz-user-select: none;
	-webkit-user-select: none;
	-ms-user-select: none;
	user-select: none;
	pointer-events: none;
	z-index: 1; /* TODO Solve this in HTML */
}

a, button, input, select {
	pointer-events: auto;
}

.dg.ac {
	-moz-user-select: none;
	-webkit-user-select: none;
	-ms-user-select: none;
	user-select: none;
	z-index: 2 !important; /* TODO Solve this in HTML */
}

#overlay {
	position: absolute;
	z-index: 2;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	background: rgba(0,0,0,0.7);
}

	#overlay button {
		background: #ffffff;
		border: 0;
		color: #000000;
		padding: 16px 20px;
		text-transform: uppercase;
		cursor: pointer;
	}

#notSupported {
	width: 50%;
	margin: auto;
	background-color: #f00;
	margin-top: 20px;
	padding: 10px;
}

JavaScript

var camera, scene, renderer;

var startButton = document.getElementById( 'startButton' );
startButton.addEventListener( 'click', function () {

	init();
	animate();

}, false );

function init() {

		var overlay = document.getElementById( 'overlay' );
		overlay.remove();

    camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
    camera.position.z = 1;

    scene = new THREE.Scene();
    
    var video = document.getElementById( 'video' );
		video.play();
    
    var texture = new THREE.VideoTexture( video );
    texture.minFilter = THREE.LinearFilter;
    texture.magFilter = THREE.LinearFilter;
    texture.format = THREE.RGBFormat;
    
    var geometry = new THREE.PlaneBufferGeometry();
   	var material = new THREE.MeshBasicMaterial( { map: texture } );

    var mesh = new THREE.Mesh( geometry, material );
    scene.add( mesh );

    renderer = new THREE.WebGLRenderer( { antialias: true } );
    renderer.setSize( window.innerWidth, window.innerHeight );
    document.body.appendChild( renderer.domElement );

}

function animate() {

    requestAnimationFrame( animate );
    renderer.render( scene, camera );

}