trying to save gif from webcam and display the result - video capture, gifAnimation, gifExport

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Hello ! I'm trying to code a sort of photobooth - gif recorder. Almost everything is done but I'm stucked on two things…

I'm recording frames then saving them as a gif file with GifMaker, incrementing the file name for each new recording.

1- when the frames are being added to the file, I can't get my screen to display anything, nor a background nor my webcam… is it normal ?

    // TODO - CHECK NUMBER OF FILES IN 'IMG' DIRECTORY & INCREMENT FILENAME
    gifExport = new GifMaker(this, "img/file"+(nbGif+1)+".gif");
    gifExport.setRepeat(0); // make it an "endless" animation

    // RECORD FRAMES UNTIL FRAMELIMIT
    for (frames=0; frames<frameLimit; frames++) {
      gifExport.setDelay(FRAMES_DURATION);
      gifExport.addFrame();
      println("adding 1 frame");
    } // end loop

    // STOP RECORDING AND SAVE FILE
    if (frames==frameLimit) {
      gifExport.finish();
      frames=0;

2 - Then I want to get this last file and display it after the recording has ended. All my attempts have been fails and I'm a bit lost. limits of my syntax knowledge… I look at the structure on http://extrapixel.github.io/gif-animation/ and it seems Gif object is not going to work if not instantiated before the draw() ? How can I change the filenames / paths that are instantiated in the setup ? I've tried to change it in the draw but the gif stops to loop, so I think I'm doing something wrong with the library

import gifAnimation.*;
Gif gifLoop;
//...
void setup() {
//…
gifLoop = new Gif(this, "img/file1.gif"); // temporary instanciation
 }

void draw() {
     image(gifLoop, width/2, height/2, width, height);
     gifLoop.play();
     }

I can send my (long) sketch if someone want to help / if I'm not being clear. Thanks a lot in advance !

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Ok so a bit more of the sketch (I've made it lighter) Would you know why does the webcam freeze when gif is recording ?

import processing.video.*;
Capture cam;
import gifAnimation.*;
GifMaker gifExport;
import java.util.Date;

int FRAME_RATE=30;
boolean record=false;
int frames;
int frameLimit = 30;
int FRAMES_DURATION = 120;
int nbGif;

////////////////////////////////////////// SETUP
void setup() {
  size(320, 240);

  // camera
  String[] cameras = Capture.list();
  cam = new Capture(this, cameras[4]);
  cam.start();
}

////////////////////////////////////////// DRAW
void draw() {
  nbGif = howManyGif(); // get number of gifs in 'img' directory

  if (record) {
    recordGif();
  } else {
    displayCam();
  }
}
////////////////////////////////////////// DISPLAY CAM
void displayCam() {
  if (cam.available()) { 
    cam.read();
  }
  // mirror
  pushMatrix();
  scale(-1, 1);
  imageMode(CORNER);
  image(cam, -width, 0, width, height);
  popMatrix();
  imageMode(CENTER);
}

////////////////////////////////////////// RECORD GIF
  void recordGif() {
  if (record == true) {
    // CHECK NUMBER OF FILES IN 'IMG' DIRECTORY & CREATE NEW FILE
    gifExport = new GifMaker(this, "img/file"+(nbGif+1)+".gif");
    gifExport.setRepeat(0); // make it an "endless" animation

    // RECORD FRAMES UNTIL FRAMELIMIT
    for (frames=0; frames<frameLimit; frames++) {
      displayCam();
      gifExport.setDelay(FRAMES_DURATION);
      gifExport.addFrame();
      println("saving frame");
    } // end loop

    // STOP RECORDING AND SAVE FILE
    if (frames==frameLimit) {
      gifExport.finish();
      println("file"+(nbGif+1)+".gif WAS SAVED - RE INITIALIZING");
      noLoop();
    } // end if frameLimit
  } // end if launchRecording

  // RE INIT
  frames=0;
  record = false;
  loop();
  println("end record");
} // END RECORD GIF

////////////////////////////////////////// RETURN ALL FILES AS STRING ARRAY  
String[] listFileNames(String dir) {
  File file = new File(dir);
  if (file.isDirectory()) {
    String names[] = file.list();
    return names;
  } else {
    // If it's not a directory
    return null;
  }
}

//////////////////////////////////////////////////////// HOW MANY GIFS
int howManyGif() {
  String path = sketchPath+"/img";
  File dataFolder = new File(path);
  String[] theList = dataFolder.list();
  int fileCount = theList.length;
  return(fileCount);
}

////////////////////////////////////////// MOUSE RELEASED
void mouseReleased() {
    record = true;
}

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Hello ! I've managed to solve the problems : applet is working ! BUT I always get an OutOfMemoryError any time after a few minutes I've already increased the RAM preferences but it doesn't solve the pb… Can you help me to debug this ? Or is there a way to relaunch automatically so I can make it work for the party tonight ? : )

Thanks a lot

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