<script> 
var vid = new Image();
var canvas, context;
var vw, vh;
var R, G, B, A;
var imageData, data, pixwidth;
var x, y;
var ascii; 
function init() {
  
  vid = document.getElementById('vid');
  
  canvas = document.getElementById('myCanvas');
  context = canvas.getContext('2d');
  
  vw = 590;
  vh = 590;
  
  ascii = "$@B%8&WM#*oahkbdpqwmZO0QLCJUYXzcvunxrjft/\|()1{}[]?-_+~>