import processing.video.*;
                


                
Capture cam1, cam2;
                


                
void setup() {
                
 size(640, 480);
                


                
 String[] cameras = Capture.list();
                
 println("Available cameras:");
                
 for (int i = 0; i < cameras.length; i++) {
                
 println(cameras[i]);
                
 }
                
 if (cameras.length < 1) {
                
 println("There are not enough cameras available.");
                
 exit();
                
 } 
                
 // The camera can be initialized directly using an 
                
 // element from the array returned by list():
                
 cam1 = new Capture(this, cameras[0]);
                
 cam2 = new Capture(this, cameras[1]);
                
 cam1.start();
                
 cam2.start(); 
                
 
                
}
                


                
void draw() {
                
 if (cam1.available() == true) {
                
 cam1.read();
                
 }
                
 if (cam2.available() == true) {
                
 cam2.read();
                
 }
                
 image(cam1, 0, 0);
                
 if( keyPressed ){ image(cam2,0,0); }
                
}
               
               

                Press and hold any key to view second cam.
               

1. import processing.video.*;
2. 
   
3. Capture cam1, cam2;
4. 
   
5. void setup() {
6.   size(1280, 480);
7. 
   
8.   String[] cameras = Capture.list();
9.   println("Available cameras:");
10.   for (int i = 0; i < cameras.length; i++) {
11.     println(cameras[i]);
12.   }
13.   if (cameras.length  < 1) {
14.     println("There are not enough cameras available.");
15.     exit();
16.   } 
17.     // The camera can be initialized directly using an 
18.     // element from the array returned by list():
19.     cam1 = new Capture(this, width/2, height, cameras[0]);
20.     cam2 = new Capture(this, width/2, height, cameras[1]);
21.     cam1.start();
22.     cam2.start();     
23.   
24. }
25. 
    
26. void draw() {
27.   if (cam1.available() == true) {
28.     cam1.read();
29.   }
30.   if (cam2.available() == true) {
31.     cam2.read();
32.   }
33.   image(cam1, 0, 0);
34.   image(cam2,width/2,0);
35. }