Hi Mister,
Thank you so much.
I have re-write your playback program and now it works with my animation. 
I have a last option to ask you if it is easy for you, and it’s not in a hurry at all…
How to record and playback the datas x and y of the mouse?
I put the record and playback program below
The record one
PrintWriter output;
float coupling, noiseLevel;
void setup() {
size(200, 200);
output = createWriter("data.txt");
output.println("0:0:0");
textSize(100);
}
void draw() {
coupling = map ((float (mouseX)/width*1), 0, 1, -50, 50 );
noiseLevel= map ((float (mouseY)/width*1), 0, 1, 0, 3 );
// print ("coupling: "); print (coupling); print (" noiseLevel: "); println (noiseLevel);
background(0);
text(key, 20, height - 20);
text(keyCode, 80, height - 20);
}
void keyPressed() {
if (key == '@') {
output.flush();
output.close();
exit();
} else {
output.println(frameCount + ":" + (int)key + ":" + (int)keyCode);
}
}
The playback one
String[] lines;
int index = 0, nextFrame = 0; // these stay the same
char theKey;
int theKeyCode;
float coupling;
float noiseLevel;
void setup() {
size(200, 200);
lines = loadStrings("data.txt");
readOneLine();
textSize(20);
}
void draw() {
// theKeyCode = 'D'; keyPressed ( );
background(0);
coupling = map ((float (mouseX)/width*1), 0, 1, -50, 50 );
noiseLevel= map ((float (mouseY)/width*1), 0, 1, 0, 3 );
// print ("coupling: "); print (coupling); print (" noiseLevel: "); println (noiseLevel);
text(key, 20, height - 20);
text(keyCode, 20, height - 40);
if (frameCount == nextFrame) {
readOneLine();
keyPressed ( );
key = 'D';
keyPressed ( );
}
// keyPressed (theKey );
}
void readOneLine() {
String[] current = split(lines[index], ':');
key = (char)int(current[1]);
keyCode = int(current[2]);
if (++index == lines.length - 1) {
exit();
}
nextFrame = int(split(lines[index], ':')[0]);
}
void keyPressed ( ) {// theKeyCode
if (keyCode == DOWN) {
println("DOWN= DECREASE SPEED "); //
}
if (keyCode == UP) {
println("UP= INCREASZe SPEED "); //
}
if (keyCode == '1' ) {
println(" 1111111 ");
}
if (keyCode == '2' ) {
println(" 2222222 ");
}
if (key == 'é' ) {
println(" ééééééé ");
}
if (key =='D') {
println(" Do Nothing ");
}
if (key =='&') {
println(" &&&&& ");
}
if (key =='i') {
println("iiiiiiiiiiiiiii ");
}
if (key =='I') {
println("IIIIIIIIIIIII ");
}
}
