let canvas;

let c;

let br;

let rectScale = 20;

​

function setup() {

  pixelDensity(1);

  createCanvas(320, 240);

  video = createCapture(VIDEO);

  video.size(320, 240);  

  video.hide();

}

​

/*

Make a pixelated 2-tone mirror with createCapture(VIDEO)and 20x20 pixels.

*/

function draw() {

  background(51);

  video.loadPixels();

  image(video,0,0);

​

  for (let x = 0; x < video.width; x+=rectScale) {

    for (let y = 0; y < video.height; y+=rectScale) {

      c = video.get(x, y);

      br = brightness(c);

      print(br);

      if (br > 50) {

        fill(255);

      } else {

        fill(0);

      }

      noStroke();

      rect(x,y,20,20);    

    }

  }

}

​