m3u8 360虚拟现实视频与三个js

Question

有没有一种方法可以用m3u8文件中的Three js播放360视频？

我在这里发现了一个类似的问题，但没有答案：https://github.com/mrdoob/three.js/issues/8216

https://threejs.org/examples/webgl_video_panorama_equirectangular.html

我使用了来自电子网站的代码来播放360视频，当使用正常的mp4视频url时，这很好，但当我尝试包含m3u8时，它会出错而失败。MEDIA_ERR_SRC_NOT_SUPPORTED:

The video could not be loaded, either because the server or network failed or because the format is not supported.

这是代码：

<video id="video" width=960 height=540 style="display:none">
<source src="https://bitmovin.com/player-content/playhouse-vr/m3u8s/105560.m3u8" type="application/x-mpegURL">
</video>

var camera, scene, renderer;
var isUserInteracting = false,
lon = 0, lat = 0,
phi = 0, theta = 0,
distance = 50,
onPointerDownPointerX = 0,
onPointerDownPointerY = 0,
onPointerDownLon = 0,
onPointerDownLat = 0;
init();
animate();
function init() {
var container, mesh;
container = document.getElementById( 'container' );
camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 1100 );
camera.target = new THREE.Vector3( 0, 0, 0 );
scene = new THREE.Scene();
var geometry = new THREE.SphereBufferGeometry( 500, 60, 40 );
// invert the geometry on the x-axis so that all of the faces point inward
geometry.scale( - 1, 1, 1 );
var video = document.getElementById( 'video' );
video.play();
var texture = new THREE.VideoTexture( video );
var material = new THREE.MeshBasicMaterial( { map: texture } );
mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mouseup', onDocumentMouseUp, false );
document.addEventListener( 'wheel', onDocumentMouseWheel, false );
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseDown( event ) {
event.preventDefault();
isUserInteracting = true;
onPointerDownPointerX = event.clientX;
onPointerDownPointerY = event.clientY;
onPointerDownLon = lon;
onPointerDownLat = lat;
}
function onDocumentMouseMove( event ) {
if ( isUserInteracting === true ) {
lon = ( onPointerDownPointerX - event.clientX ) * 0.1 + onPointerDownLon;
lat = ( onPointerDownPointerY - event.clientY ) * 0.1 + onPointerDownLat;
}
}
function onDocumentMouseUp() {
isUserInteracting = false;
}
function onDocumentMouseWheel( event ) {
distance += event.deltaY * 0.05;
distance = THREE.MathUtils.clamp( distance, 1, 50 );
}
function animate() {
requestAnimationFrame( animate );
update();
}
function update() {
lat = Math.max( - 85, Math.min( 85, lat ) );
phi = THREE.MathUtils.degToRad( 90 - lat );
theta = THREE.MathUtils.degToRad( lon );
camera.position.x = distance * Math.sin( phi ) * Math.cos( theta );
camera.position.y = distance * Math.cos( phi );
camera.position.z = distance * Math.sin( phi ) * Math.sin( theta );
camera.lookAt( camera.target );
renderer.render( scene, camera );
}

m3u8在chrome(和其他一些浏览器(上播放。我已经用了很多年了。问题在于将m3u8格式与三个js 相结合

m3u8的工作原理如下所示：https://hls-js.netlify.app/demo/输入以下网址：https://bitmovin.com/player-content/playhouse-vr/m3u8s/105560.m3u8

Answer 1

HLS(.m3u8文件类型(和MPEG DASH(.mpd文件类型(是自适应比特率流协议(ABR(。

ABR为您的内容创建多个比特率版本并将其分块，因此客户端可以从设备和当前网络条件的最佳比特率中选择下一个分块(https://stackoverflow.com/a/42365034/334402)。

要播放HSL或DASH文件，通常使用基于Javascript的视频播放器，该播放器将利用HTML5媒体资源扩展API-HTML5 MSE:

• https://developer.mozilla.org/en-US/docs/Web/API/Media_Source_Extensions_API

Javascript视频播放器下载视频块，为每个块选择最合适的比特率，然后将它们组装并传递给HTML5视频播放器。

许多Javascript视频播放器将支持360视频，您可能会发现将其中一个简单地集成到您的项目中更容易。例如，对常用视频JS播放器的扩展将支持360视频：

• https://github.com/videojs/videojs-vr