arozos/web/Screen Recorder/PoC.html

<button id="btn-start-recording">Start</button>
<button id="btn-stop-recording" disabled>Stop</button>

<script src="https://www.WebRTC-Experiment.com/RecordRTC.js"></script>
<script>
    var wsUri = getWebSocketEndpoint() + "/system/file_system/lowmemUpload?filename=" + encodeURIComponent(new Date().toLocaleString().replaceAll(" ","").replaceAll("/","").replaceAll(":","").replaceAll(",","")) + ".webm&path=user%3A%2F";
var video = document.querySelector('video');
var websocket;

function getWebSocketEndpoint(){
        let protocol = "wss://";
        if (location.protocol !== 'https:') {
            protocol = "ws://";
        }
        let port = window.location.port;
        if (window.location.port == ""){
            if (location.protocol !== 'https:') {
                port = "80";
            }else{
                port = "443";
            }
            
        }
        let wsept = (protocol + window.location.hostname + ":" + port);
        return wsept;
    }

function captureCamera(callback) {
    navigator.mediaDevices.getDisplayMedia({
            displaySurface: 'monitor',
            logicalSurface: true,
            cursor: 'always'
        }).then(function(camera) {
        callback(camera);
    }).catch(function(error) {
        alert('Unable to capture your camera. Please check console logs.');
        console.error(error);
    });
}

function stopRecordingCallback() {
    recorder.camera.stop();
    recorder = null;
}

var recorder; 

document.getElementById('btn-start-recording').onclick = function() {
    this.disabled = true;
    websocket = new WebSocket(wsUri);
    //websocket.binaryType = 'blob';

    captureCamera(function(camera) {

        recorder = RecordRTC(camera, {
            recorderType: MediaStreamRecorder,
            mimeType: 'video/webm',
            timeSlice: 100, // pass this parameter
            getNativeBlob: true,
            ondataavailable: function(blob) {
                websocket.send(blob);
            }
        });

        recorder.startRecording();

        // release camera on stopRecording
        recorder.camera = camera;

        document.getElementById('btn-stop-recording').disabled = false;
    });
};

document.getElementById('btn-stop-recording').onclick = function() {
    this.disabled = true;
    recorder.stopRecording(stopRecordingCallback);
    websocket.send("done");
};
</script>

<footer style="margin-top: 20px;"><small id="send-message"></small></footer>
<script src="https://www.webrtc-experiment.com/common.js"></script>