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

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标签我可以在客户端的浏览器上显示它.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用户完成录制并决定上传后发送到服务器？

我找到了一些例子:

• 通过websocket将二进制映像发送到服务器
• 定期捕获流视频帧并将其作为图像发送

Answer 1

MediaStreamRecorder是一个用于记录getUserMedia()流的WebRTC API.它允许Web应用程序从实时音频/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>

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

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

它显示了Webrtc的用法：

这些 API 应该能够构建可以在浏览器内运行的应用程序，无需额外的下载或插件，允许各方使用音频、视频和补充实时通信进行通信，而无需使用干预服务器（除非需要穿越防火墙，或提供中介服务）。