Home » Desktop Java » xuggler » Create video from image frames with Xuggler

About Byron Kiourtzoglou

Byron Kiourtzoglou
Byron is a master software engineer working in the IT and Telecom domains. He is an applications developer in a wide variety of applications/services. He is currently acting as the team leader and technical architect for a proprietary service creation and integration platform for both the IT and Telecom industries in addition to a in-house big data real-time analytics solution. He is always fascinated by SOA, middleware services and mobile development. Byron is co-founder and Executive Editor at Java Code Geeks.

Create video from image frames with Xuggler

Let’s now see how to create a video from scratch. As input, we will use sequential snapshots from our desktop. This can be used for a rudimentary screen recording application. This is very important when you want to make your want to create individual frames and make your own custom video. We are going to use Xuggler for that.

In short, to create video from image frames with Xuggler, one should follow these basic steps:

  • Make a IMediaWriter to write the file using ToolFactory.makeWriter(outputFilename).
  • Get the screen Dimension you are working with using Toolkit.getDefaultToolkit().getScreenSize().
  • Tell the IMediaWriter that we’re going to add one video stream, with id 0,at position 0, and that it will have a fixed frame rate of FRAME_RATE calling writer.addVideoStream(0, 0,ICodec.ID.CODEC_ID_MPEG4,screenBounds.width/2,screenBounds.height/2);
  • Use Robot.createScreenCapture to take Desktop screenshots and convert it the right image type.
  • Encode the image to stream using writer.encodeVideo.

Let’s see the code snippet that follows:

package com.javacodegeeks.xuggler;

import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.util.concurrent.TimeUnit;

import com.xuggle.mediatool.IMediaWriter;
import com.xuggle.mediatool.ToolFactory;
import com.xuggle.xuggler.ICodec;

public class ScreenRecordingExample {

    private static final double FRAME_RATE = 50;

    private static final int SECONDS_TO_RUN_FOR = 20;

    private static final String outputFilename = "c:/mydesktop.mp4";

    private static Dimension screenBounds;

    public static void main(String[] args) {

  // let's make a IMediaWriter to write the file.

  final IMediaWriter writer = ToolFactory.makeWriter(outputFilename);

  screenBounds = Toolkit.getDefaultToolkit().getScreenSize();

  // We tell it we're going to add one video stream, with id 0,

  // at position 0, and that it will have a fixed frame rate of FRAME_RATE.

  writer.addVideoStream(0, 0, ICodec.ID.CODEC_ID_MPEG4, 

 screenBounds.width/2, screenBounds.height/2);

  long startTime = System.nanoTime();

  for (int index = 0; index < SECONDS_TO_RUN_FOR * FRAME_RATE; index++) {

// take the screen shot

BufferedImage screen = getDesktopScreenshot();

// convert to the right image type

BufferedImage bgrScreen = convertToType(screen, 

 BufferedImage.TYPE_3BYTE_BGR);

// encode the image to stream #0

writer.encodeVideo(0, bgrScreen, System.nanoTime() - startTime, 

 TimeUnit.NANOSECONDS);

// sleep for frame rate milliseconds

try {

    Thread.sleep((long) (1000 / FRAME_RATE));

} 

catch (InterruptedException e) {

    // ignore

}

  }

  // tell the writer to close and write the trailer if  needed

  writer.close();

    }

    public static BufferedImage convertToType(BufferedImage sourceImage, int targetType) {

  BufferedImage image;

  // if the source image is already the target type, return the source image

  if (sourceImage.getType() == targetType) {

image = sourceImage;

  }

  // otherwise create a new image of the target type and draw the new image

  else {

image = new BufferedImage(sourceImage.getWidth(), 

     sourceImage.getHeight(), targetType);

image.getGraphics().drawImage(sourceImage, 0, 0, null);

  }

  return image;

    }

    private static BufferedImage getDesktopScreenshot() {

  try {

Robot robot = new Robot();

Rectangle captureSize = new Rectangle(screenBounds);

return robot.createScreenCapture(captureSize);

  } 

  catch (AWTException e) {

e.printStackTrace();

return null;

  }

    }

}

 
This was an example on how to create video from image frames with Xuggler.

Related Article:

(No Ratings Yet)
Start the discussion Views Tweet it!

Do you want to know how to develop your skillset to become a Java Rockstar?

Subscribe to our newsletter to start Rocking right now!

To get you started we give you our best selling eBooks for FREE!

 

1. JPA Mini Book

2. JVM Troubleshooting Guide

3. JUnit Tutorial for Unit Testing

4. Java Annotations Tutorial

5. Java Interview Questions

6. Spring Interview Questions

7. Android UI Design

 

and many more ....

 

Receive Java & Developer job alerts in your Area

 

Leave a Reply

avatar
  Subscribe  
Notify of