WebRTC MediaStream

media.js

var constraints = { video: 1, audio: 1 },
    localvid = document.querySelector("#localvid"); // A HTML5 video element with an 'autoplay' property.
            
// Success call
function success(stream){
    localvid.src = URL.createObjectURL(stream);
}

// Failure call
function failure(e){
    console.log("404!! Video failed. Whatapun!!!???", e);
}

// navigator.getUserMedia(constraints, success, failure); // Legacy code
navigator.mediaDevices.getUserMedia(constraints).then(success).catch(failure);