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137 lines
3.3 KiB
HTML
137 lines
3.3 KiB
HTML
2 months ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgpu - video frames</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - video - frames<br/>
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Decodes all frames from a MP4 file and renders them onto a plane as fast as possible.<br/>
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<a href="https://github.com/gpac/mp4box.js/" target="_blank" rel="noopener">mp4box.js</a> used for MP4 parsing.
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</div>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.webgpu.js",
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"three/webgpu": "../build/three.webgpu.js",
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"three/tsl": "../build/three.tsl.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import { MP4Demuxer } from 'three/addons/libs/demuxer_mp4.js';
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let camera, scene, renderer;
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init();
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function init() {
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camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, .25, 10 );
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camera.position.set( 0, 0, 1 );
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scene = new THREE.Scene();
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const geometry = new THREE.PlaneGeometry();
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const videoTexture = new THREE.VideoFrameTexture();
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videoTexture.colorSpace = THREE.SRGBColorSpace;
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// eslint-disable-next-line compat/compat
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const decoder = new VideoDecoder( {
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output( frame ) {
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// To avoid video decoder stalls, we should close the VideoFrame which is no longer needed. https://w3c.github.io/webcodecs/#dom-videodecoder-decode
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if ( videoTexture.image instanceof VideoFrame ) videoTexture.image.close();
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videoTexture.setFrame( frame );
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},
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error( e ) {
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console.error( 'VideoDecoder:', e );
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}
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} );
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new MP4Demuxer( './textures/sintel.mp4', {
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onConfig( config ) {
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decoder.configure( config );
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},
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onChunk( chunk ) {
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decoder.decode( chunk );
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},
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setStatus( kind, status ) {
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console.info( 'MP4Demuxer:', kind );
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if ( kind === 'fetch' && status === 'Done' ) {
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decoder.flush().then( () => {
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decoder.close();
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// In case our VideoFrameTexture is no longer needed, we should close its backed VideoFrame, see issue #30379:
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if ( videoTexture.image instanceof VideoFrame ) videoTexture.image.close();
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videoTexture.image = null;
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scene.remove( mesh );
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} );
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}
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}
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} );
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const material = new THREE.MeshBasicMaterial( { map: videoTexture } );
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const mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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renderer = new THREE.WebGPURenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.setAnimationLoop( animate );
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document.body.appendChild( renderer.domElement );
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//
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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function animate() {
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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