how to make video play till the end of its duration even if other video is being called to play?

Hello everybody,

here I am again, turning to your society with a call for help. I want to make this video installation which incorporates webcam light tracking according to which I want to play certain video clips. I can make the clips start, but that's it, I wish to make video run till the end of its duration and only then play other video which (if) was called also to the end of playback and so on.

import processing.video.*;

Capture cam;
int x, y;

Movie mov;

Movie mov_1;

void setup() {
  fullScreen();
  //size(1280, 720);
  frameRate(24);
  background(0);

  //println(Capture.list());
  cam = new Capture(this, 640, 480, 30);
  cam.start();

  mov = new Movie(this, "1.MOV");
  mov.play();
  mov.volume(0);

  mov_1 = new Movie(this, "2.MOV");
  mov_1.play();
  mov_1.volume(0);

  imageMode(CENTER);
}

void movieEvent(Movie m) {
  m.read();
}

void draw() {
  background(0);
  if (cam.available()) {
    cam.read();
    cam.loadPixels();
    float maxBri = 50;
    int theBrightPixel = 0;
    for (int i=0; i<cam.pixels.length; i++) {
      if (brightness(cam.pixels[i]) > maxBri) {
        maxBri = brightness(cam.pixels[i]);
        theBrightPixel = i;
      }
    }
    x = theBrightPixel % cam.width;
    y = theBrightPixel / cam.width;
  }
  image(cam, width/2, height/2);


  if (x > 400) {
    image(mov, width/2, height/2, 1280, 720);
  }

   if (x > 200 && x < 400) {
      image(mov_1, width/2, height/2, 1280, 720);
    }

  noStroke();
  fill(255, 0, 0);
  ellipse(map(x,0, 640, 0, 1366), map(y, 0, 480, 0, 768), 10, 10);
}