Question

使用getUserMedia我可以从客户端的网络摄像头/摄像头捕获视频流。使用video标记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Feed或用户完成录制并决定上传到服务器后发送？

我找到了几个例子：

Answer 1

MediaStreamRecorder是一个用于记录getUserMedia（）流的WebRTC API。它允许Web应用程序通过实时音频/视频会话创建文件。

 <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>

<强>规格：

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

您可以将录制的文件发送到服务器。

Answer 2

看一下这篇文章：http://www.smartjava.org/content/face-detection-using-html5-javascript-webrtc-websockets-jetty-and-javacvopencv

它显示了Webrtc的使用：

这些API应该能够构建可以在浏览器中运行的应用程序，无需额外的下载或插件，允许使用音频，视频和补充实时通信的各方之间的通信，而无需使用中间服务器（除非需要防火墙遍历，或提供中介服务）。

HTML5解决方案，用于将网络摄像头/摄像头视频流上传到服务器

2 个答案: