具有三个js的m3u8 360虚拟现实视频

是否可以使用来自m3u8文件的三个js播放360视频?

我在这里找到了类似的问题,但没有答案:https://github.com/mrdoob/three.js/issues/8216

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

我已经使用了您网站上的代码来播放360视频,使用正常的mp4视频url时此功能正常,但是当我尝试包含m3u8时,它将失败并出现错误。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 );

            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 );

            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,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。我已经使用多年了。问题在于将m3u8格式与三个js组合在一起

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

iCMS 回答:具有三个js的m3u8 360虚拟现实视频

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创建内容的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状况(https://stackoverflow.com/a/42365034/334402)的最佳比特率中选择下一个块。

要播放HSL或DASH文件,通常使用基于Javascript的视频播放器,该播放器又将利用HTML5 Media Soure Extension API-HTML5 MSE:

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视频,您可能会发现将其中之一集成到项目中会更容易。例如,对常用videoJS播放器的扩展将支持360视频:

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