JMF Player Applet and NAT

Hi,
I have built an entire rtsp/rtp server to stream multimedia files and the webcam.
I can more or less succesfully stream video content on a LAN, but even if I make my server public on the internet, there remain NAT issues regarding the client.
What I wish to do, is to embedd an applet within the webserver so that the end-user doesn't require a third-party client to watch his content.
I've built an applet following the SimplePlayerApplet example, which works on a LAN.
Now what I would like to do, is to get informations from the RTSP session, particularly RTP source port, in order to send a single datagram, so that the firewall/router can bind the internal client port to its public port. This way the server can serve RTP/UDP packets that may able to cross the router. I read STUN server used this method to resolve UDP crossing of routers.
The thing is that with a Player object, I can't get any information regarding RTP session. I'd rather avoid to use an RTPManager because this way, I would have to redo all the RTSP(client-side) thing.
Can you please help ?
Thanks in advance.

If you need to play a real player file then see the Java Media Framework API, it's support many media file types, also you can play any media file from server side.
go to :
http://java.sun.com/products/java-media/jmf/index.html

Similar Messages

Typical Player Applet and Security

Hello,
When i use the Typical PlayerApplet in a webpage, it can connect to the rtsp server and play the video successfully.
However, I'm trying to build a new player applet, using the com.sun.media.content.rtsp.RtspUtil class (following the com.sun.media.content.rtsp.Handler example), but then I get security exception.
If I sign the applet, I still get that Security exception.
Please help.

Possibly. Any output in the Java console:
View > Java Console
As you're running in an Intranet environment why don't you go with the plugin as this would give you a lot more scope GUI wise? You can place it on your server and set your HTML so that it's downloaded automatically if the user does not already have it installed. The one problem with this is that if your users are running WIN2K/NT then they have to admin rights to do the install.
If not then you could try compiling with the -target switch:
javac -target <release> Generate class files for specific VM version

JMF Diagnostics applet - how to resolve "JMF Classes not found"

I am still having problems trying to get my USB camera to run in an applet.
I'm using Windows XP with IE 6.
I found the JMF Diagnostic Applet and when I run it, I get the following:
Java 1.1 compliant browser.....Maybe
JMF classes.....Not Found
The text below says that CLASSPATH needs to include jmf.jar
I have checked that and it does. I added all the jar files to the CLASSPATH as well and that did not help.
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I did that and still get the same error.
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Thanks,

I have exactly the same problem. Running XP pro and Java 5. Installed JMF2.1.1e and the diagnostic doesn't work. Don't know how to verify or set the CLASSPATH but assumed it was more plug and play.
I'm a student and am writing my final year project which is supposed to be a multi-client concurrency based video clip app. All the sample codes I've seen make it look quite easy. I was wanting to prototype my concepts before I continue (glad there are some nifty buffer controls) I've unistalled, reinstalled, restarted an no joy and the only help that seems might work includes loads more files than what my distribution has (just have jmf.jar, customizer.jar, multiplayer,jar, mediaplayer.jar and sound.jar and that's it.
I was a little worred about the need to have the API on my test client machines (aka housemates) now I'm really worried.

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Is it possible to load JMF player in html or php page without the help of applet or jsp or jsf?
I heared that flash can be handy for this purpose as java can be loaded in flash movie, can anyone give me better idea about this?

I don't know much about flash, but "loading java in flash movie" doesn't sound like something that makes sense. Flash does video, but you'll have to go to a Flash forum for more info on that :)
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JMF player and a selected file/mpg

Does anyone know how to change this piece of code so a JMF player can run when a file/mpg is selected.
final File directory = new File(".");
    File[] files = directory.listFiles();
    for(int x = 0; x < files.length; x++)
      if(files[x].isFile()) dim.addElement(files[x].getName());
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           public void actionPerformed(ActionEvent ae)
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               }}});

I don't understand?
On the program that I use it's works.
When I put a button, the video close, and the I open an another by launching this method:
public void openFile(String filename)
     String mediaFile = filename;
     // URL for our media file
     URL url = null;
if(player!=null)
player.stop();
player.deallocate();
desktop.removeAll();
repaint();
try
     // Create an url from the file name and the url to the
     // document containing this applet.
     if ((url = new URL(mediaFile)) == null)
          Fatal("Can't build URL for " + mediaFile);
          return;
     // Create an instance of a player for this media
     try
          player = Manager.createRealizedPlayer(url);
catch (NoPlayerException e)
          Fatal("Error: " + e);
catch (CannotRealizeException e)
catch (MalformedURLException e)
     Fatal("Error:" + e);
catch (IOException e)
     Fatal("Error:" + e);
     if (player != null)
     this.filename = filename;
     jmframe = new JMFrame2(player, filename);
//jmframe.setSize(200,100);
     desktop.add(jmframe);
I hope that It could Help you.
You can find an exemple quite similar on this site , the name of the file is: MDIApp.java
;)

Filelocking and JMF player

Hello,
I am making a JMF player. However it is my requirement that while the video is being played, the video file may not be copied (through windows explorer) to some other location. I understand there are filelocking capabilities in Java.However those require that the file be opened using a FileInputStream and then access is only permitted through that stream.However JMF player do not take the stream as input.So how do I go about doing this.Please Help
Thanks,
Mohit

Welcome to the Sun forums.
wizzo wrote:
..I am making a JMF player. However it is my requirement that while the video is being played, the video file may not be copied (through windows explorer) to some other location. .. That is a very odd requirement for a player. It seems you want to throw in abilities normally found in a file manager app. (or something of that nature).
..I understand there are filelocking capabilities in Java.However those require that the file be opened using a FileInputStream and then access is only permitted through that stream.Are you sure about that? I am not that experienced with FIS and file locking abilities, but it surprises me that a FIS would do that. And as an aside, ultimately the player would probably turn a File into a FIS, if that is the case, and FIS locks the File, the job is done automatically.
BTW - please put a couple of spaces between each and every sentence. Putting the spaces helps the reader to quickly scan the text, looking for questions(1) and ways to help. You would not want to make it harder to help, would you?
..However JMF player do not take the stream as input.Off the top of my head. How about this? Use the FIS to create a copy of the file in the java.io.tempdir, then run the player using the temporary file.
..So how do I go about doing this.1) Is that a question? If so, please don't forget to add a question mark, for the same reasons as putting spaces between sentences.
..Please HelpThere is not need to ask people to help. If they want to help and are capable of doing so, they will help. If not, then no amount of pleading will change that. Also, it makes you appear 'needy', which is something that discourages people from even trying to help in the first place.

JMF Newbie Help and Dual Webcam

Hi all,
I am a new user to JMF and am quite lost with the various examples found on the internet.
If there is a low-down, without the frills tutorial do point me to it.
This is the process of my program:
Selects a webcam
Saves image (I found solutions for this in omcgovern's post)
Reselect a webcam.
The thing is I need to be able to switch webcams as and when I like but the webcam select dialog only appears once.
And the capture device detection with null doesn't work, so I used a method that I found in another post.
My code that I'm posting is just a webcam app I modified, to have a start and stop button.
The start button is supposed to be able to select another web cam.
Do give me pointers!
Cheers.
import javax.media.Player;
import javax.media.CaptureDeviceInfo;
import javax.media.MediaLocator;
import javax.media.CaptureDeviceManager;
import javax.media.Manager;
import javax.media.format.*;
import java.util.Vector;
import java.awt.*;
import java.awt.event.*;
public class Test implements ActionListener {
CaptureDeviceInfo device;
MediaLocator ml;
Player player;
Component videoScreen;
public static void main(String args[]){
new Test();
Test(){
try
{ //gets a list of devices how support the given videoformat
//Vector deviceList = CaptureDeviceManager.getDeviceList();
// This works but its somewhat hard-coded (Nat)
// new CaptureDeviceInfo("vfw://0",new MediaLocator("vfw:Microsoft WDM Image Capture (Win32):0"),null);
// new CaptureDeviceInfo("vfw://1",new MediaLocator("vfw:Microsoft WDM Image Capture (Win32):1"),null);
// new CaptureDeviceInfo("vfw://2",new MediaLocator("vfw:Microsoft WDM Image Capture (Win32):2"),null);
device = new CaptureDeviceInfo("vfw://0",new MediaLocator("vfw:Microsoft WDM Image Capture (Win32):0"),null);
//device = (CaptureDeviceInfo) deviceList.firstElement();
ml = device.getLocator();
player = Manager.createRealizedPlayer(ml);
player.start();
videoScreen = player.getVisualComponent();
videoScreen.setBounds(10,10,300,300);
Button a = new Button("Stop");
a.setBounds(10,320,75,25);
a.addActionListener(this);
Button b = new Button("Start");
b.addActionListener(this);
b.setBounds(235,320,75,25);
Frame frm=new Frame();
frm.setLayout(null);
frm.setSize(360,360);
frm.add(a);
frm.add(b);
frm.add(videoScreen);
frm.setVisible(true);
catch(Exception e)
System.out.println(e);
// My findings on experiments so far.
// player.stop() and player.start() can be used continuously unless you call player.close();
// What is the code that pops up the webcam selector??
public void actionPerformed(ActionEvent e) {
     Button button = (Button)e.getSource();
     if(button.getLabel().equals("Start")) {
          try {
               device = new CaptureDeviceInfo("vfw://0",new MediaLocator("vfw:Microsoft WDM Image Capture (Win32):0"),null);
               System.out.println("Test1");
               ml = device.getLocator();
               System.out.println("Test2");
               player = Manager.createRealizedPlayer(ml);
               System.out.println("Test3");
               player.start();
               System.out.println("Test4");
               videoScreen = player.getVisualComponent();
               System.out.println("Test");
          } catch(Exception ex) {System.out.println("Start error!");}
     else {
          player.stop();
          player.close();
}

You're probably in deep trouble then.... but nothing an investment into a cheap modern web cam couldn't cure...
Have you checked the Web Cam web site for any updated drivers ?
Here's a list of supported devices...
http://java.sun.com/products/java-media/jmf/2.1.1/formats.html#Capturers
regards,
Owen

JMF-based applet can not detect audio devices on Vista (?)

Hi,
As many people reported, I encountered the same issue - CaptureDeviceManager.getDeviceList does not detect any audio device on IE/Vista.
Here is my testing environment:
HP XW4600, RealTek HD Audio onboard sound card,
Vista SP1 (Business, Home Premium, and Vista64)
JRE1.5.0_16, JMF2.1.1e
A recording Applet runs in IE7 (which works fine on XP and its Java application version always works fine on Vista)
I have tried a number of things without success:
1)Use different audio formats as the input parameter for getDeviceList
2)Try CaptureDeviceManager.getDevice(new String("DirectSoundCapture"))
3)CaptureDeviceInfo info = new CaptureDeviceInfo(com.sun.media.protocol.dsound.DataSource.NAME,new MediaLocator("dsound://"),null);
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5)Uncheck UAC(Vista User Access Control)
6)Set IE settings least restrictive
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8)Pack the recording Applet to a jar and deploy to JRE\lib\ext
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On a few occasions, audio devices can be detected. For examples,
10)Upgrading an HP XW4200 (XP machine with AC�97 codecs driver) to Vista,
11)1/5 chance on the machines with both Sun JRE and MS Java SDK installed.
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I am wondering if there is a way to let JMF-based applets detect audio devices on Vista or this is an inherent problem with JMF, IE and Vista.
I would appreciate it very much if you�d kindly offer any help and suggestions.
-Belfield

>
As many people reported, I encountered the same issue - CaptureDeviceManager.getDeviceList does not detect any audio device on IE/Vista.>(..in an applet)
>
I would appreciate it very much if you'd kindly offer any help and suggestions. >I suspect the basic problem here, is the installer that defaults to preventing the applet access to record sound (I am guessing that would 'spill over' into web-cam permissions). A quick test of that is to try the same code as an application.
If the application works, one possible fix is to launch the application using webstart. Webstart will work from a web page, and offers many other advantages over a standard applet.

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Question on deploying Applet and MySQL
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I have build a prototype and ran it in netbeans on my computer. It then successfully read data from a local MySQL base. HOWEVER; when I embed the applet in html code it no longer reads from the base. My method for connecting to the base is
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Statement stmt;
ResultSet rs;
Class.forName("com.mysql.jdbc.Driver");
String url=adress;
Connection con=DriverManager.getConnection(url, user, user);
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rs=stmt.executeQuery("SELECT * " +
"from "+table+" ORDER BY id");
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get data...
Town T=new Town(data...); //construct town object
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I think I do need an applet. The map I have written permits a lot of features that I dont know how to achieve in another way.
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I need java to do this and I need to run it in a webbrowser because there are som parts of the game that is made up of php. So I assume I have to build it as an applet?

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Hi all!
We are trying to make our SmartScript opens automatically when a user navigates to a particular view. We followed the following steps:
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1) Create a new view.
2) Add "Smart Script Player Applet (Player Only)" to it.
3) Add the view to an existed screen and other needed steps.
* Using Siebel web client:
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When we tried to invoke it, we couldn't see the questions :S and when we pressed "Finish" a message appeared indicating that there are a required fields that must be answered before.
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Kind regards,
Tamara.
Edited by: 952870 on Aug 27, 2012 7:36 AM

Hi Tamara,
You seem to have followed the steps as per bookshelf:
http://docs.oracle.com/cd/E16348_01/books/SmartScript/SmartScriptExeTestSS6.html#wp1008662
I guess you have added the new view to the user's responsibility etc?
I sometimes add a list applet to the same view just to test that the view is working and renders correctly. This just rules out any SS player issues
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Is it possible to record audio/ vedio from applet and store it on server

Pls tell me if it is possible to record audio/ vedio from applet and store it on server. I am using JMF. i am able to store audio on the same machine by making a java application but i am not able to understand how to use RTP with it to store it on server from an applet. pls help me i am in urgent need.

If u want to capture audio/video from the client machine these are the pre-requisites
1. u need to have JMF installed on the client :(
one way out of this is that u bundle the library files along ur applet to the client. I am still to figure out how
to fo that.
2. while installation uncheck the option 'copy DLLs to system folder....' and check the option 'Allow capture
from applets.
3. The Applets u create must be signed, for accessing the client resources such as hard drive.
You can then capture n save file on the client, open an inout stream out of it, open an outputstream to the server as already described above and start uploading......

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Hey all,
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Sunil, I just want to verify you are pointing me to the link under "Progress bar hangs during download / Unable to connect to server / Unable to download metafile."
If yes, then that is the file I originally downloaded based on a March post I saw here.
I just tried it again, and it (by "it" I mean the Flash Player Plug-in (All other browsers from download.macromedia.com) installed 11.6.
After the installation process completed, the dialog box notified me it was version 11.6, and when I went back to, the "find version" page, 11.6 was confirmed.
I did not download the exe for Internet Explorer, as I almost never use that browser.

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Host N2 (10.1.0.1/16) will communicate with host N1 192.168.1.5 with destination lets say 10.23.1.5 not 192.168.1.5 (Notice the last octet should be the same in this case .5)
The same translation for the rest of the communication (Host N2 pings host N3 destination ip 10.23.1.6 not 192.168.1.6. again last octet is the same)
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Hi,
Ok so were going with the older NAT configuration format
To me it seems you could do the following:
Configure the ASA1 with Static Policy NAT
access-list L2LVPN-POLICYNAT permit ip 192.168.1.0 255.255.255.0 10.1.0.0 255.255.0.0
static (inside,outside) 10.23.1.0 access-list L2LVPN-POLICYNAT
Because the above is a Static Policy NAT it means that the translation will only be done when the destination network is 10.1.0.0/16
If you for example have a basic PAT configuration for inside -> outside traffic, the above NAT configuration and the actual PAT configuration wont interfere with eachother
On ASA2 side you can normally configure NAT0 / NAT Exemption for the 10.1.0.0/16 network
access-list INSIDE-NONAT remark L2LVPN NONAT
access-list INSIDE-NONAT permit ip 10.1.0.0 255.255.0.0 10.23.1.0 255.255.255.0
nat (inside) 0 access-list INSIDE-NONAT
You will have to take into consideration that your access-list defining the L2L-VPN encrypted traffic must reflect the new NAT network
ASA1: access-list L2LVPN-ENCRYPTIONDOMAIN permit ip 10.23.1.0 255.255.255.0 10.1.0.0 255.255.0.0
ASA2: access-list L2LVPN-ENCRYPTIONDOMAIN permit ip 10.1.0.0 255.255.0.0 10.23.1.0 255.255.255.0
I could test this setup tomorrow at work but let me know if it works out.
Please rate if it was helpful
- Jouni

JMF Player Applet and NAT

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