JS Canvas $ Sign Funny Effect Zoomed In SRC

<body onload="setInterval('draw1();',50);">
<canvas id="canvas" width='1000' height='1000'></canvas>
<script>
function draw1() {
var ctx = document.getElementById('canvas').getContext('2d');
for (var i=0;i<25;i++) {
for (var j=0;j<25;j++) {
ctx.save();
ctx.fillStyle = 'rgb('+(0)+','+(255)+','+(0)+')';
ctx.translate(j*i,j+i*+Math.random()*1000);
ctx.fillText("$",Math.random()*200,Math.random()*200,Math.random()*200,Math.random()*20);
ctx.restore();
}
}
}
</script>
  <body bgcolor="black" onmousemove="drawe();" onmousedown="drawe" onchange="drawe" ondoubkeclick="drawe;">
<video id="video" autoplay hidden>
</video>
<canvas id="canvas" onchange="drawe;" topmost=false onchange="drawe;" width="1000" height="1000"style="opacity:1.0;fillColor:none;">
<script>
var ii=1;
var inn=prompt("Enter #:");
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(){
var possible = "FABCGDE0123456789";
var text = "";
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
for(var i=0; i!=6; i++)
text+=possible.charAt(Math.floor(Math.random()*possible.length))
ctx.strokeStyle="#"+text;
ctx.moveTo(event.x+4,event.y-4);
ctx.lineTo(event.x+4,event.y-1);
ctx.topmost=true;
ctx.stroke();
text='';
}
navigator.mediaDevices.getUserMedia(mediaConfig).then(function(stream) {
if(ctx.width==500){event.mouseMove++;}
video.src = this.window.URL.createObjectURL(stream);
video.play();
video.addEventListener("play", function() {i = window.setInterval(function() {
canvas.style.opacity-=0.1
canvas.style.opacity++;
  ctx.topmost=false;
  if(ii==2250){
return 0;
}
ctx.drawImage(video,1,1,ii++,2250)},inn);
ctx.draw();
drawe;

}, false);
});
</script>