@vikasietum_tecknology/record-rtc/simple-demos/pass-getUserMedia-constraints.html

record-rtc is a library based on recordrtc library. In this forked version of the original library we have optimized the memory management. The video recording is stored in IndexDB in chunks.

<style>
    html, body {
        margin: 0!important;
        padding: 0!important;
    }
</style>

<title>pass getUserMedia constraints to RecordRTC</title>
<h1>pass getUserMedia constraints to RecordRTC</h1>

<br>

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

<hr>
<video controls autoplay playsinline></video>

<script src="/RecordRTC.js"></script>
<script>
var video = document.querySelector('video');

function stopRecordingCallback() {
    video.src = video.srcObject = null;
    video.src = URL.createObjectURL(recorder.getBlob());
    recorder.camera.stop();
    recorder.destroy();
    recorder = null;
}

var recorder; // globally accessible

document.getElementById('btn-start-recording').onclick = function() {
    this.disabled = true;
    // Example snippet
    var constraints = {
        video: { width: 360, height: 240 },
        audio: true,
        // recorderType: WhammyRecorder
    };

    navigator.mediaDevices.getUserMedia(constraints).then(function(camera) {
        video.srcObject = camera;

        recorder = RecordRTC(camera, constraints);

        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);
};
</script>

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