I'm new on processing; wanted to find out how can I choose a different video source (firewire 800) opposed to the built in camera on laptop.
would greatly appreciate it.

Regards

code;

import processing.video.*;
MovieMaker movie;

boolean rec;
int n;
int varZero;
int prevN;
int prevZero;
int numPixels;
int prevPixels;
int[] prevLines;
Capture video;

void setup(){
 size(320, 240);
 frameRate = 30;
 video = new Capture(this, width, height, 72);
 numPixels = video.width * video.height;
 //Sets the number of pixels to be stored using
 //an algebric progression formula related
 //to the number of lines to be stored.
 prevPixels = ((numPixels*(height+1))/2);
 //Sets the array to store these pixels.
 prevLines = new int[prevPixels];
 movie = new MovieMaker(this, width, height, "rybczynski.mov",
 72, MovieMaker.ANIMATION, MovieMaker.LOSSLESS);
 //Sets the movie recording function off by default.
 rec=false;
 loadPixels();
 noStroke();
}


void draw(){
 if (video.available()){
   video.read();
   video.loadPixels();
   //For each line of the image:
   for (int y=1; y<height; y++){
     //Declares the value of 'n', which will be used to index
     //to which of the "lines" stored for line 'y' shall the software
     //access to store current frame's line 'y'.
     n=(frameCount%y);
     //Indexes to the begining of the "line" in which to store
     //the current frame's line 'y' using an algebric progression
     //formula based on 'y' var and the indexing gave by 'n' var.
     varZero= round((n*width)+(((sq(y)+y)*width)/2));
     //Declares the value of 'prevN'. This var will
     //index to stored "line" the software shall
     //read to display at current frame's line 'y'.
     prevN=((frameCount-(y-1))%y);
     //Indexes to the begining of the "line" that the software
     //shall read to display currently at line 'y'. Uses the
     //same process of varZero expression, but with other vars.
     prevZero=round((prevN*width) +(((sq(y)+y)*width)/2));
     //For each pixel in line 'y':
     for (int i=1; i<width; i++){
       //Declares a 'ind' var based on 'y' and 'i'
       //to index the displayed pixels.
       int ind=((y*width)+i);
       //Stores each pixel of line 'y' of current frame
       //captured from real-time video.
       prevLines[varZero+i]= video.pixels[ind];
       //Reads and displays the proper line of pixels from
       //the data stored.
       pixels[ind]=prevLines[prevZero+i];
     }
   }
   updatePixels();
   if (rec==true){
     movie.addFrame();
   }
 }
}

void keyPressed (){
 //If SPACE key is pressed and recording is off, turn it on.
 if (key==' ' && rec==false){
   rec=true;
   println("REC");
 }
 //If SPACE key is pressed and recording is on, turn it off.
 else if (key==' ' && rec==true){
   rec=false;
   println("PAUSE");
 }
 //If ESCAPE key is pressed, finish movie.
 else if (key==ESC){
   movie.finish();
   println("STOP");
 }
}

Or you add this code in setup(), taken from the video library examples:

Code:

Capture cam;
void setup() {
String[] devices = Capture.list();
println(devices);  
// Change devices[0] to the proper index for your camera.
cam = new Capture(this, width, height, devices[0]);
}
 

(There was errors in my codes. It's now fixed)

Okay I added   if(key == 's'){
   video.settings();
I hit 's' when its running and i select source, DV is greyed out and cannot be selected - only built in camera is available?

why is this. I closed processing turned the camera back on and opened the project up again, but still no luck

what do i do next?