Saving video from Processing with the jCodec 2.3

In the former post, I have tested using the jCodec 0.1.5 and 0.2.0 to save the Processing screen into an MP4 file. The latest version of jCodec 0.2.3 has, however, changed its functions for the AWT based applications. Here is the new code for Processing to use jCodec 0.2.3 to save any BufferedImage to an external MP4 file.

To use the code, you need to download from the jCodec website the following two jar files and put them into the code folder of your Processing sketch.

  • jcodec-0.2.3.jar
  • jcodec-javase-0.2.3.jar

The following code will write a frame of your Processing screen into the MP4 file for every mouse pressed action.

import processing.video.*;
import java.awt.image.BufferedImage;
import org.jcodec.api.awt.AWTSequenceEncoder;
 
Capture cap;
AWTSequenceEncoder enc;
 
public void settings() {
  size(640, 480);
}
 
public void setup() {
  cap = new Capture(this, width, height);
  cap.start();
  String fName = "recording.mp4";
  enc = null;
  try {
    enc = AWTSequenceEncoder.createSequenceEncoder(new File(dataPath(fName)), 25);
  } 
  catch (IOException e) {
    println(e.getMessage());
  }
}
 
public void draw() {
  image(cap, 0, 0);
}
 
public void captureEvent(Capture c) {
  c.read();
}
 
private void saveVideo(BufferedImage i) {
  try {
    enc.encodeImage(i);
  } 
  catch (IOException e) {
    println(e.getMessage());
  }
}
 
public void mousePressed() {
  saveVideo((BufferedImage) this.getGraphics().getImage());
}
 
public void exit() {
  try {
    enc.finish();
  } 
  catch (IOException e) {
    println(e.getMessage());
  }
  super.exit();
}

To save only the capture image, you can just replace the following saveVideo command.

saveVideo((BufferedImage) cap.getNative());

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