my code for stream ipcamera :

rtsp:// and save to test.asf

how record ipcamera using  *.*asf file...??? Please help me




11 years 3 months ago

You said you wanted it in Java so a quick search bring up this video :

Its an example of how to use VLCJ to play media,  The second "file" in the video would be your rtsp://...  url.

You will have to look up how to save the media using VLCJ.


11 years 3 months ago


package vlcj;
import com.sun.jna.Memory;
import com.sun.jna.NativeLibrary;
import java.nio.ByteBuffer;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class VLCTestPlayer implements RenderCallback, BufferFormatCallback {
protected MediaPlayerFactory mediaPlayerFactory;
protected DirectMediaPlayer mediaPlayer;
public static void main(final String[] args) {
    NativeLibrary.addSearchPath("libvlc","C:\\Program Files (x86)\\VideoLAN\\VLC");
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            VLCTestPlayer testplayer = new VLCTestPlayer(args);
private VLCTestPlayer(String[] args) {
    JFrame frame = new JFrame("vlcj Tutorial");
    mediaPlayerFactory = new MediaPlayerFactory("--no-video-title-show", "--verbose=3");
    mediaPlayer = mediaPlayerFactory.newDirectMediaPlayer(this, this);
    String videoFile = "myVideo.mp4";
    boolean started = mediaPlayer.prepareMedia(videoFile);
    if (started);
    System.out.println("Video started: " + started + " from: " + videoFile);
    frame.setLocation(100, 100);
    frame.setSize(1050, 600);
public BufferFormat getBufferFormat(int sourceWidth, int sourceHeight) {
    sourceWidth = sourceWidth / 1;
    sourceHeight = sourceHeight / 1;
    System.out.println("Got VideoFormat: " + sourceWidth + "x"
            + sourceHeight);
    BufferFormat format = new BufferFormat("RGBA", sourceWidth,
            sourceHeight, new int[] { sourceWidth * 4 },
            new int[] { sourceHeight });
    return format;
public void display(DirectMediaPlayer mediaPlayer, Memory[] nativeBuffers,
        BufferFormat bufferFormat) {
    ByteBuffer buffer = nativeBuffers[0].getByteBuffer(0,
            (int) bufferFormat.getWidth() * (int) bufferFormat.getHeight()
                    * 4);
    int pos = 4 * ((int) bufferFormat.getWidth()
            * (int) bufferFormat.getHeight() / 2 + (int) bufferFormat
            .getWidth() / 2) + 700;
    System.out.println("Got VideoFrame: " + buffer.get(pos) + ":"
            + buffer.get(pos + 1) + ":" + buffer.get(pos + 2) + ":"
            + buffer.get(pos + 3));

You need to add a command line parameter to java when it starts your class.  This tells where Java where it can look for required native files - such as libvlc.dll - find the file and add the path to this JVM argument.

java -Djava.library.path="C:\Program Files (x86)\VideoLAN\VLC;"

It would help to know if you are using Eclipse or some other IDE to debug.

Looking at the code you posted :

I see this line

NativeLibrary.addSearchPath("libvlc","C:\\Program Files (x86)\\VideoLAN\\VLC");

If libvlc.dll is not in "C:\\Program Files (x86)\\VideoLAN\\VLC" - then that is your first problem.

Another possible problem is you have Windows 64 operating system, but 32 bit Java, and a 64 bit VLC dll.  When you mix it like this it will not work.
Find the Java bitness this way

C:\>java -version
java version "1.6.0_33"

Java(TM) SE Runtime Environment (build 1.6.0_33-b03)
Java HotSpot(TM) 64-Bit Server VM (build 20.8-b03, mixed mode)
As you can see I have a 64 bit JVM - is this the same on your system?

my java version 64 Bit:


Java: 1.7.0_04; Java HotSpot(TM) 64-Bit Server VM 23.0-b21

System: Windows 7 version 6.1 running on amd64; Cp1252; en_US (nb)       


I think I did not mix the java version and Windows version.. 

am use java 64 bit and windows 64 bit.


i see libvlc.dll in my computer C:\\Program Files (x86)\\VideoLAN\\VLC


my error code :

Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'libvlc': The specified module could not be found.
at com.sun.jna.NativeLibrary.loadLibrary(
at com.sun.jna.NativeLibrary.getInstance(
at com.sun.jna.Library$Handler.<init>(
at com.sun.jna.Native.loadLibrary(
at com.sun.jna.Native.loadLibrary(
at rstp.VLCTestPlayer.main(
Java Result: 1
what should I do to resolve e this?


11 years 3 months ago


after am add vlcj-1.2.0.jar, jna.jar, platfrom.jar to netbeans the problem remains the same, 
       _       _
__   _| | ___ (_)
\ \ / / |/ __|| |
 \ V /| | (__ | |
  \_/ |_|\___|/ | 1.2.0
VLCJ is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
VLCJ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with VLCJ.  If not, see <;.
Copyright 2009, 2010, 2011 Caprica Software Limited.
Exception in thread "main" java.lang.RuntimeException: Failed to load the native library.
The error was "Unable to load library 'libvlc': The specified module could not be found.
The required native libraries are named "libvlc.dll" and "libvlccore.dll".
In the text below <libvlc-path> represents the name of the directory containing "libvlc.dll" and "libvlccore.dll".
There are a number of different ways to specify where to find the native libraries:
 1. Include NativeLibrary.addSearchPath("libvlc", "<libvlc-path>"); at the start of your application code.
 2. Include System.setProperty("jna.library.path", "<libvlc-path>"); at the start of your application code.
 3. Specify -Djna.library.path=<libvlc-path> on the command-line when starting your application.
 4. Add <libvlc-path> to the system search path (and reboot).
More information may be available in the log, specify -Dvlcj.log=DEBUG on the command-line when starting your application.
at vlcj.SaveStream.main(
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
I expect an answer from you please help me..



11 years 3 months ago

it's work..

the trouble at bit vlc version, this is my wrong..

your answer is true..

thanks grog