JS Night Vision Canvas Webcam 1000x1000 Zoom SRC

<center>
<canvas id="canvas" width='1000' height='1000'></canvas>

<body bgcolor="white" onmousemove="drawe();" onmousedown="drawe" onchange="drawe" ondoubleclick="drawe;">
<video id="video" autoplay hidden>
</video>
<canvas id="canvas" width="10000" height="10000"style="opacity:1.0;fillColor:white;">
<script>
var ii=1;

var video = document.getElementById("video");
var c = document.getElementById("canvas");
var ctx = c.getContext("2d");
var canvas = document.getElementById('canvas');
var context = canvas.getContext('2d');
var video = document.getElementById('video');
var mediaConfig = { video: true,audio:false};
function drawe(){
}
navigator.mediaDevices.getUserMedia(mediaConfig).then(function(stream) {
video.src = this.window.URL.createObjectURL(stream);
video.play();
video.addEventListener("play", function() {i = window.setInterval(function() {
canvas.style.opacity+=0.2;
ctx.drawImage(video,ii,ii,1000,1000)},1);
ctx.draw();
drawe();
}, false);
});
</script>
</center>