What is JMF?!

Casper

What is (JMF) ?

The Java Media Framework API (JMF) enables audio, video and other time-based media to be added to applications and applets built on Java technology. This optional package, which can capture, playback, stream, and transcode multiple media formats, extends the Java 2 Platform, Standard Edition (J2SE) for multimedia developers by providing a powerful toolkit to develop scalable, cross-platform technology.

I used (JMF) because, i needed it in my graduation project, i used it for playing videos and graping frames or seeking for a specific frame in a video , i will post the classes that helped me to learn this very powerful package beside the API Guide, and documentation, first let me put sun urls to get this package with API Guide and documentation: -

JMF 2.1.1e:

Code:

http://java.sun.com/products/java-media/jmf/2.1.1/download.html

API Guide:

Code:

http://java.sun.com/products/java-media/jmf/2.1.1/specdownload.html

Documentation:

Code:

http://java.sun.com/products/java-media/jmf/2.1.1/documentation.html

Some Code examples i will start with easy one, and i will post the other classes in separate topics because they need quit explanation,

here its a simple class that show you the basics of jmf :

Code:

     import java.net.MalformedURLException;
     import java.net.URL;
     import javax.swing.JFileChooser;
     import javax.swing.JFrame;
    
     public class MediaTest
    {
       // launch the application
       public static void main( String args[] )
       {
          // create a file chooser
         JFileChooser fileChooser = new JFileChooser();
   
          // show open file dialog
         int result = fileChooser.showOpenDialog( null );
   
          if ( result == JFileChooser.APPROVE_OPTION ) // user chose a file
          {
             URL mediaURL = null;
   
             try
            {
               // get the file as URL
                mediaURL = fileChooser.getSelectedFile().toURL();
             } // end try
             catch ( MalformedURLException malformedURLException )
             {
               System.err.println( "Could not create URL for the file" );
             } // end catch
 
             if ( mediaURL != null ) // only display if there is a valid URL
             {
                JFrame mediaTest = new JFrame( "Media Tester" );
                mediaTest.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
   
                MediaPanel mediaPanel = new MediaPanel( mediaURL );
               mediaTest.add( mediaPanel );
   
                mediaTest.setSize( 300, 300 );
               mediaTest.setVisible( true );
             } // end inner if
          } // end outer if
       } // end main
   } // end class MediaTest  

Code:

 

import java.awt.BorderLayout;
import java.awt.Component;
import java.io.IOException;
import java.net.URL;
import javax.media.CannotRealizeException;
import javax.media.Manager;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.media.Time;
import javax.media.format.VideoFormat;
import javax.swing.JPanel;

public class MediaPanel extends JPanel {

    public MediaPanel(URL mediaURL) {
        setLayout(new BorderLayout()); // use a BorderLayout

        // Use lightweight components for Swing compatibility
        Manager.setHint(Manager.MAX_SECURITY, true);

        try {
            // create a player to play the media specified in the URL
            Player mediaPlayer = Manager.createRealizedPlayer(mediaURL);

            // get the components for the video and the playback controls
            Component video = mediaPlayer.getVisualComponent();
            Component controls = mediaPlayer.getControlPanelComponent();

            if (video != null) {
                add(video, BorderLayout.CENTER);
            } // add video component
            VideoFormat vf = new VideoFormat(mediaURL.toString());
            String ff= vf.MJPG;
            System.out.println(ff);
            if (controls != null) {
                add(controls, BorderLayout.SOUTH);
            } // add controls
            Time m=mediaPlayer.getMediaTime();
            System.out.println(m.getSeconds());
           
            mediaPlayer.start(); // start playing the media clip
        } // end try
        catch (NoPlayerException noPlayerException) {
            System.err.println("No media player found");
        } // end catch
        catch (CannotRealizeException cannotRealizeException) {
            System.err.println("Could not realize media player");
        } // end catch
        catch (IOException iOException) {
            System.err.println("Error reading from the source");
        } // end catch
    } // end MediaPanel constructor

    } // end class MediaPanel
 