here is my code to play the three videos at a same but they all play in a single frame , one behind the other........

 

 

 

import processing.video.*;
import processing.serial.*;
Serial port;
Movie myMovie;
Movie yourMovie;
Movie ourMovie;

int state = 31;

int play1 = 1;
int play2 = 1;
int play3 = 1;

int val1 = 0;
int val2 = 0;
int val3 = 0;

void setup() {
size(620,440,P2D);
background(0);
myMovie = new Movie(this, "looper.mov");

yourMovie = new Movie(this, "totoro.mov");

ourMovie = new Movie(this, "animal_007-0-0.mov");
myMovie.loop();
yourMovie.loop();
ourMovie.loop();
println(Serial.list());
// print a list of all available ports
port = new Serial(this, Serial.list()[1], 9600);
// choose the port to which the Arduino is connected
// on the PC this is usually COM1, on the Macintosh
// this is usually tty.usbserial-XXX
}

 

void draw() {
background(255);
if (play1 < port.available()) {
val1 = port.read();
}
image(myMovie, 0, 0);
if (val1 == 0) {
myMovie.speed(0);
} else {
  myMovie.speed(1);
}
   
   if (play2 < port.available()) {
val2 = port.read();
}
image(yourMovie, 0, 0);
if (val2 == 0) {
yourMovie.speed(0);
} else {
  yourMovie.speed(1);
}
  
   if (play3 < port.available()) {
val3 = port.read();
}
image(ourMovie, 0, 0);
if (val3 == 0) {
ourMovie.speed(0);
} else {
  ourMovie.speed(1);
}
  
  
  
  
  
  
 /* 
    play1 = state & 1;
    play2 = (state & 2) >> 1;
    play3 = (state & 4) >> 2;
    */
   
   
   // print(play1);
    //print(play2);
   // print(play3);  
   
  }
   

  // Called every time a new frame is available to read
void movieEvent(Movie m) {
  if(m == myMovie) {
    myMovie.read();
  } else if(m == yourMovie) {
    yourMovie.read();
  }
  else {

  ourMovie.read();
  }

}