将网络摄像头/相机视频流上传到服务器的 HTML5 解决方案

Question

使用 getUserMedia我可以从客户的网络摄像头/相机捕获视频流。并使用 video 标签，我可以在客户端的浏览器上显示它。代码:

<video autoplay></video>

<script type="text/javascript">
    window.URL = window.URL || window.webkitURL;
    navigator.getUserMedia  = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;

    var video = $('video')[0];

    var failed = function(e) {
        console.log('Denied!', e);
    };

    if( navigator.getUserMedia ) {
        navigator.getUserMedia( {video: true, audio: true}, function( stream ) {
                video.src = window.URL.createObjectURL(stream);
            }, failed
        )
    } else {
        console.log( 'Not supported!' );
    }
</script>

现在是否可以将此视频流作为实时源或在用户完成录制并决定上传后发送到服务器？

我找到了几个例子:

• sending binary images to server over websocket
• Periodically capture frame of streaming video and send that as image

Answer 1

MediaStreamRecorder 是一个用于记录 getUserMedia() 流的 WebRTC API。它允许网络应用程序从实时音频/视频 session 创建文件。

 <video autoplay></video>

    <script language="javascript" type="text/javascript">
    function onVideoFail(e) {
        console.log('webcam fail!', e);
      };

    function hasGetUserMedia() {
      // Note: Opera is unprefixed.
      return !!(navigator.getUserMedia || navigator.webkitGetUserMedia ||
                navigator.mozGetUserMedia || navigator.msGetUserMedia);
    }

    if (hasGetUserMedia()) {
      // Good to go!
    } else {
      alert('getUserMedia() is not supported in your browser');
    }

    window.URL = window.URL || window.webkitURL;
    navigator.getUserMedia  = navigator.getUserMedia || 
                             navigator.webkitGetUserMedia ||
                              navigator.mozGetUserMedia || 
                               navigator.msGetUserMedia;

    var video = document.querySelector('video');
    var streamRecorder;
    var webcamstream;

    if (navigator.getUserMedia) {
      navigator.getUserMedia({audio: true, video: true}, function(stream) {
        video.src = window.URL.createObjectURL(stream);
        webcamstream = stream;
    //  streamrecorder = webcamstream.record();
      }, onVideoFail);
    } else {
        alert ('failed');
    }

    function startRecording() {
        streamRecorder = webcamstream.record();
        setTimeout(stopRecording, 10000);
    }
    function stopRecording() {
        streamRecorder.getRecordedData(postVideoToServer);
    }
    function postVideoToServer(videoblob) {

        var data = {};
        data.video = videoblob;
        data.metadata = 'test metadata';
        data.action = "upload_video";
        jQuery.post("http://www.kongraju.in/uploadvideo.php", data, onUploadSuccess);
    }
    function onUploadSuccess() {
        alert ('video uploaded');
    }

    </script>

    <div id="webcamcontrols">
        <button class="recordbutton" onclick="startRecording();">RECORD</button>
    </div>

规范:

http://www.w3.org/TR/mediastream-recording/

您可以将录制的文件发送到服务器。