package vlcj;

import com.sun.jna.Native;
import com.sun.jna.NativeLibrary;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class Camera {
  private final EmbeddedMediaPlayerComponent mediaPlayerComponent;
  public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {      
      public void run() {
        new Camera();
  private Camera() {
     //Membaca file Dll Vlc
     NativeLibrary.addSearchPath(RuntimeUtil.getLibVlcLibraryName(), "C:/Program Files/VideoLAN/VLC");
     Native.loadLibrary(RuntimeUtil.getLibVlcLibraryName(), LibVlc.class);
     System.out.println("JDK Version:  " + System.getProperty("") + " bits.");  
     JFrame frame = new JFrame("vlcj Tutorial");
     mediaPlayerComponent = new EmbeddedMediaPlayerComponent();    
     frame.setLocation(100, 100);       
     frame.setSize(1050, 600);
          //Save video
          File dir = new File(System.getProperty("user.home"), "Videos");
          DateFormat df = new SimpleDateFormat("yyyyMMdd-HHmmss");
          String fileName = dir.getAbsolutePath() + "/Capture-" + df.format(new Date()) + ".mpg";          
          //Tweak the options depending on your encoding requirements and audio       
          //capture device (ALSA is not likely to work on Windows of course)
          //String[] options = {":sout=#transcode{vcodec=mp4v,vb=4096,scale=1,acodec=mpga,ab=128,channels=2,samplerate=44100}:duplicate{dst=file{dst=" + fileName + "},dst=display}", ":input-slave=alsa://hw:0,0"};
          String [] options =  {":sout=#transcode{vcodec=mpgv,vb=4094,scale=1,acodec=mpg,ab=128,channels=2,samplerate=44100}:duplicate{dst=file{dst=" + fileName + "},dst=display}"};
why no sound after capture video?


11 years 3 months ago

Hey Dedy,

You have ALSA commented out, which is correct if your on Windows..

Now you need to :

  • make sure the ip camera really is streaming audio & video
  • determine the format - is it being packaged with the mpeg4 video? - is it a seperate stream? - what format is it? Ogg? or some other format?
  • change your transcode appropriately - here are some examples with audio -

post a video or at least a picture of what your doing so far....


do you think I should change the line :
acodec = mpg into acodec = mpga


11 years 3 months ago

In reply to by Dedy_hidayat

Sure, I think you've made great progress - but now, you know more about your system than I do.  
So, you will have to experiment and try to find the correct codec - documentation regarding your IPCamera should say something about it.

Good Luck


11 years 2 months ago

Hi, first of all, thanks for this amazing post! Currently im trying to only "see what my webcam sees". So i'm not considering the //Save Video part. When i run the code, it just shows a black window, no image. My webcam doesnt respond either (no "active green light").

What would you suggest?

Thanks in advance!

PS: im running this on Eclipse, Windows 7, the webcam is a Microsoft LifeCam VX-800. And all, besides Windows, is running in a x86 basis.