let video;

​

let x = 0;

​

function setup() {

  createCanvas(windowWidth, windowWidth*4/5);

  pixelDensity(1);

  video = createCapture(VIDEO);

  video.size(windowWidth, windowWidth*4/5);

  background(51);

}

​

function draw() {

​

  video.loadPixels();

  let w = video.width;

  let h = video.height;

   //copy(srcImage, sx, sy, sw, sh, dx, dy, dw, dh)

  //copy(video, w/2, 0, 1, h, x, 0, 1, h);

  x = x + 1;

  if (x > width) {

    x = 0;

  }

}