m3u8 360 虚拟现实视频与三个 js

Question

有没有办法用来自m3u8文件的三个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

我已使用您网站上的代码播放 360 度视频，当使用普通 mp4 视频 url 时可以正常工作，但是当我尝试包含 m3u8 时它会失败并出现错误。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.

代码如下：

<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。我已经使用它多年了。问题在于将m3u8格式与三个js结合起来

m3u8 可以在此处看到：https://hls-js.netlify.app/demo/ 输入此网址：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它们分块，因此客户端可以根据设备和当前网络条件 (https://stackoverflow.com/a/42365034/334402) 从最佳比特率中选择下一个块。

要播放 HSL 或 DASH 文件，您通常使用基于 Javascript 的视频播放器，这反过来将利用 HTML5 Media Soure Extension 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，然后将它们组合起来并传递给 HTML5 视频播放器。

许多 Javascript 视频播放器将支持 360 度视频，您可能会发现将其中之一简单地集成到您的项目中会更容易。例如，对常用的 videoJS 播放器的扩展将支持 360 视频：

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