JS Canvas Webcam Picture Mask Overlay SRC

<center>
<body  onmousemove="setInterval(Load_Img('http://www.w3schools.com/graphics/pic_the_scream.jpg'),34)" background-color="white">
<video id="video" autoplay hidden>
</video>
<canvas id="canvas" width="500" height="500" style="drawColor:#FFFFFF">
<script>
var video = document.getElementById("video");
var c = document.getElementById("canvas");
var ctx = c.getContext("2d");
var i=0;
var mediaConfig = { video:true,audio:false};
navigator.mediaDevices.getUserMedia(mediaConfig).then(function(stream) {
video.src = this.window.URL.createObjectURL(stream);
video.play();
  video.addEventListener("play", function() {i = window.setInterval(function() {
   ctx.drawImage(video,0,0,500,500)},100);
}, false);
});

function Load_Img(path){
var h,w;
h=('500');
w=('500')
    var canvas = document.getElementById("canvas");
    var ctx = canvas.getContext("2d");
    var img = new Image();
img.src=(path);
   ctx.drawImage(img, 1, 1,h,w);
}
</script>

</body>
</html>