let myVideo;
let otherVideo;

function setup() {
  createCanvas(windowHeight, windowWidth);
  
  let constraints = {audio: true, video: true};
  myVideo = createCapture(constraints, 
    function(stream) {
	  let p5l = new p5LiveMedia(this, "CAPTURE", stream, "NYCAMST")
	  p5l.on('stream', gotStream);
    }
  );  
  myVideo.elt.muted = true;     
  myVideo.hide();
}

function draw() {
  
  background(220);
  stroke(255);
  image(myVideo,0,0,width,height);
  if (otherVideo) {
    blend(otherVideo, 0, 0, otherVideo.width, otherVideo.height, 0, 0, width, height, MULTIPLY);
  }
}
  

// We got a new stream!
function gotStream(stream, id) {
  // This is just like a video/stream from createCapture(VIDEO)
  otherVideo = stream;
  //otherVideo.id and id are the same and unique identifiers
  otherVideo.hide();
}