JMF Video Capture within Applets

I would like to develop web conference..please helm me

venujakku wrote:
I would like to develop web conference..please helm meI just succesfully created a Java simple prototype application using JMF that can capture the webcam images in real time.
Just use the JMF and your set.
Edited by: deAppel on Oct 15, 2007 3:30 PM

Similar Messages

Jmf video capture in an Applet

Hello
I use netBeans 6.9.1 and would like to use JMF and the webcam capture JMF function in my applet
but Iget a no permission error see below
How can I get out of that?
Thank you
Fred
Public class SourceCam extends java.applet.Applet implements Runnable {
public int wmax,hmax,ix, x1, y1, x2, y2,y3,y4=0;
public double yc1=0.0,yc2=0.0, yc3=0.0,yc4=0.0,yc5=0.0,yc6=0.0;
Color colors[] = new Color[50];
int[] couleur=new int[50];
Thread runner;
Frame f=new Frame("Stimulated Polarized Light @FF ");
public static Player player = null;
public static MediaPlayer MediaPlayer1=null;
public CaptureDeviceInfo di = null;
public MediaLocator ml = null;
run:
java.lang.RuntimeException: No permission to capture from applets
java.lang.RuntimeException: No permission to capture from applets
javax.media.NoPlayerException: Error instantiating class: com.sun.media.protocol.vfw.DataSource : java.lang.RuntimeException: No permission to capture from applets
at javax.media.Manager.createPlayerForContent(Manager.java:1362)
at javax.media.Manager.createPlayer(Manager.java:417)
at javax.media.Manager.createRealizedPlayer(Manager.java:553)
at org.me.light.SourceCam.init(SourceCam.java:58)
at sun.applet.AppletPanel.run(AppletPanel.java:424)
at java.lang.Thread.run(Thread.java:662)

I did that already
i.e. what is written in
Q: Can I capture audio or video from within an Applet with JMF 2.1.1?
By default (for security reasons), JMF 2.1.1 does not allow capture from an applet. The user can turn this on by using JMFRegistry.
Run "java JMFRegistry", select the UserSettings tab and check "Allow Capture From Applets". If the browser's security permits loading native libraries, then you will now be able to capture audio/video from an applet.
but the program lines
try
player = Manager.createRealizedPlayer(ml);
FormatControl formatControl = (FormatControl)player.getControl("javax.media.control.FormatControl");
Component co = formatControl.getControlComponent();
Thread.sleep(2000);
player.start();
give always the same error
java.lang.RuntimeException: No permission to capture from applets
java.lang.RuntimeException: No permission to capture from applets
why?
I am working inside the netbeans 6.9.1 editor

JMF Video Capture in Vista

Hey all,
I have done a lot of searching on this matter, but most of the threads are old. I am wondering if there has been any updates or if this issue has been solved in any way.
I am trying to create an applet that captures an image from a webcam. I created the applet, using sample code found somewhere on these forums, and it works perfectly. I modified it to take 6 screenshots instead of 1 when the Capture button is pressed, and that works perfectly. However, when I developed this I was at work (Windows XP). When I got home and attempted to test my work further I got the following error:
java.lang.RuntimeException: No permission to capture from applets
java.lang.RuntimeException: No permission to capture from applets
javax.media.NoPlayerException: Error instantiating class: com.sun.media.protocol.vfw.DataSource : java.lang.RuntimeException: No permission to capture from applets
     at javax.media.Manager.createPlayerForContent(Manager.java:1362)
     at javax.media.Manager.createPlayer(Manager.java:417)
     at javax.media.Manager.createRealizedPlayer(Manager.java:553)
     at lib.snapshot.applet.Snapshot.init(Snapshot.java:68)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)I read, through these forums and searching google, that IE is in a sandbox in Vista, which makes signed applets only able to access java related data and certain temporary directories, rather than the whole system like other OS's. However, we have other signed applets that create directories in Program Files folders, download files from the server, etc that work fine in Vista, so that makes no sense. Also, I have disabled Protected Mode on my my machine and turned all security measures off, to no affect. Also the same thing happens in Firefox.
Has anyone found a way around this for Vista? Does anyone know of another easy to use java API for doing this that works in both Vista and XP? Has anyone who has encountered this problem ended up developing something similar in another language (flash, etc)?
I require this applet for taking snapshots for a project for my job. I had preferred Java, because our other applets are all Java and I didn't want to mix techonologies too much. But if there is no way to do this in a stable way for both Vista and XP, then I will have to look at other languages.
Thanks for the help.
Bryan

compbry, the fundamental problem is that Vista is 3 years old and the latest releast of JMF is like, 5 or 6 years old. So, there's nothing in the realm of "Vista compatibility" for JMF.
That said, to my knowledge no one has ever gotten JMF to capture video from inside an applet in Vista, JMF installed on the computer or not.
However, if you have JMF installed, you can easily run a JMF web-start app that will work just fine in Vista, that would allow you to do whatever it is you're needing to do.
But if you're going in a different direction, I'd suggest looking at the Adobe Flex API. It's free and from what I've researched about it, it makes webcam and microphone capture damn easy. If you've got a decent web server that will allow you to do ColdFusion or (can't remember the term for it, but you can write Java code that will run on-demand on the web host that your Flex application can talk to to do stuff like upload the images, etc...), it should be a relatively easy and short as far as LOC is concerned, minus of course the learning curve associated with learning something new (which is why I've only researched it, but I would've played with it too had I had a "decent webserver" ;-)

Finally.... Video captured from applet in Vista!!

Hello!
Hurray!! finally I can see myself smiling and waving back in browser in Vista.
I mentioned in another thread just a day earlier that I will post a new topic if I succeed in capturing from applets in Vista, so thats what I am doing.... This thread is all about how achieved it.
I have seen many posts mentioning problems in capturing from applets in vista. I was also one of the sufferer. And most people including me blamed that on restricted sandbox of Vista. But surprisingly it was all about classpath.
I think I mentioned in some earlier thread that the 'Java console' shows the classpath to be *"{JREHOME}/classes"* instead of the classpath specified in CLASSPATH environment variable. You can check that by pressing 's' which *'dumps system and deployment properties'* in the Java Console. You can check the classpath by noting the value of *"java.class.path"* field which for my case was"C:\\PROGRA~1\\Java\\jre6\\classes". This turned out to be the main problem. The applet was not accessing any classes from the real CLASSPATH instead it was considering the classpath to be jrehome/classes. So, now I had enough hint what to do next. I simply created a folder 'classes' in {JREHOME} and copied the jmf registry files to that folder. By registry files I mean *'jmf.properties'* and *'jmf.properties.orig'* files in *'{JMF Install}/lib'* folder (actually i don't which among them has got some thing to do with the registry but I copied them both). So, after doing this, all my capture applets, whether signed or unsigned started running. Earlier they all were throwing *"java.lang.RuntimeException: No permission to capture from applets"* exception even after I have allowed capture from applets in JMF registry. That was perhaps not taking affect because of classpath issues. So, thats the story.... if someone faces the same problem he can use this workaround or you can say hack ;-)
Some questions which can be asked from me would be:
1- Did you set your CLASSPATH environment variable correctly?
ans: Yes, infact all my jmf applications were running correctly, the problem was only with the applets.
2- What classpath other systems (e.g. XP) mention in the Java console ?
ans: surprisingly, the same classpath that Vista mentions i.e. {JREHOME}/classes. I tested on XP-SP3, but it supposedly had access to the real CLASSPATH also.
3- Is this problem really Vista specific?
ans: Can't say... but it can be. It maybe the case that Vista does not allow access to real CLASSPATH, but this problem can easily be my system specific, it would be called a general vista problem if this happens on all Vista systems, I need volunteers for this test. captfoss, can you please test this on your system? :)
4- Is this problem JMF specific?
ans: Chances are low. I am going to test this by making my own test library and adding it to classpath and then try to access it via applet. If this fails then this problem is not JMF specific.
Drawbacks of this work around:
1- This can be a pain for ordinary users , copying registry files from JMF/lib to JRE/classes.
2- Whatever you change in JMF registry would not be effective to the applets. As the old registry files are to be replaced with new registry files every time JMF registry is changed for changes to take effect in applets.
The real big question:
How can we force Vista to look in the real CLASSPATH? this is the real question, if this can be done just by changing some settings then all this workaround is useless :) I am looking forward to the answer of this question.....
captfoss, I would highly appreciate your comments.
Thanks for reading this rather long post.... :)
Thanks!

A couple of comments here...the answer is, in fact, no, you didn't set your classpath correctly. One, you're probably using a JAR file to run your applet from (I'm not an applet programmer but I do believe that a JAR is required) which do not use the environment's classpath, they use their manifest classpath. No, the applet was not jared.
Second, I believe that the browser itself specifies its own classpath, which you cannot modify. I believe this would be considered a security feature...Both IE7 and firefox3 fail.
"You have little control over the CLASSPATH used by a browser for an Applet"
[http://mindprod.com/jgloss/classpath.html]
Ok this maybe the reason, I will go through the link....
2- What classpath other systems (e.g. XP) mention in the Java console ?
ans: surprisingly, the same classpath that Vista mentions i.e. {JREHOME}/classes. I tested on XP-SP3, but it supposedly had access to the real CLASSPATH also. There isn't a "real" CLASSPATH, there is just the classpath stored as an environmental variable. It's no more or less real than the one in the browser.Thats what I thought.... but I think {JREHOME}/classes is the default class path used by the jre whether we set any CLASSPATH variable or not it would be there, something of that sort.....
Lots of possibilities, but my best guess is that Vista doesn't let code running in the browser read environmental variables.Yes, I fully agree with this. I think I should file a bug report.
4- Is this problem JMF specific?
ans: Chances are low. I am going to test this by making my own test library and adding it to classpath and then try to access it via applet. If this fails then this problem is not JMF specific. Definately not. It would apply to any code that wants to access something on the classpath. You are right... as I said I would test it, I tested by making a small library, added it to classpath, made an application and an applet. As expected, the aplication worked while the applet failed.
Any application with a custom classpath would be affected.I don't understand what you mean here, do you mean 'Class-path' header in jar manifest?
I like the "installation requirement" part. I'd suggest looking into that. Alternately, there may be something in the security settings to allow access to environmental variables.I will try to look into both.
I just tried this statement in applet:
System.out.println( System.getProperty( "java.class.path" ) );It threw this exception:
Exception: java.security.AccessControlException: access denied (java.util.PropertyPermission java.class.path read)
I don't know what conclusion should I draw from this... this does mean applet has no right to know what the classpath is.... but this doesn't mean even jre plugin responsible for running applet does not know what the classpath is :)
Finally, I want to say that due to some problems I could not post earlier, and I may not post for few more days. But I appreciate your comments and would appreciate more of them.
Thanks!

JMF video capture on OS X?

Hello,
is it possible to somehow do video capture under JMF? I use Mac OS X on Macbook Pro. I have found Quicktime for Java, but I would rather avoid using proprietary QuickTime APIs and work with portable JMF API. When I run JMF studio, I only see audio capture device.
Juraj.

You should take a look at the hardware requirements and supported formats for the cross platform version of JMF.
http://java.sun.com/products/java-media/jmf/2.1.1/formats.html
http://java.sun.com/products/java-media/jmf/2.1.1/requirements.html
Be aware that JMF does not have its own video format, but supports proprietary formats like Quicktime.
regards

JMF Video Capture, output not properly

hello,
i'm trying to capture Video using JMStudio. my webcam is Logitech QuickCam IM, and it's detected succesfully by jmregistry. but then when i run jmstudio and start video capturing from logitech webcam, the output is only black and green, and beeping.
i don't know if anyone has ever experienced this before. what should i do to make it work?
Thank you.

Sorry, that last post was misposted. It was supposed to go on a thread where the OP did resolve his problem. Sorry about that!
If your web cam isn't V4L compliant and only supports V4L2, then it won't work with JMF. Also, if you're using the cross-platform pack instead of the Solaris performance pack, it won't work with JMF.
Finally, if you're running it as a user with insufficent permissions to access the hardware, it won't work (try running as root just to check this).

JMF Video Capture: Force capture format

Hi all!
is there an issue to force video capture format? I know I can set the string format but could you tell me how to make this string (new YUVFormat(new Dimension(176...)...
player = Manager.createRealizedPlayer(ml);
        player.start();
        FormatControl formatControl = (FormatControl)player.getControl ( "javax.media.control.FormatControl" );
        Format mform = new Format(/*Here the requested string*/);
        formatControl.setFormat(mform);Thanks ;)

In fact i succeed to set format, i just want to know how to make a right sentence (String) for the Format(String) constructor, including capture resolutio, fps ....

Jmf video capture

Hi iam new in jmf. The jmf alredy detected the capturing device , but not capturing video. only showing a black screen.while setting its parameters(RGB..) getting the error message "could not inetialize capturiing device". i am using windos xp.

Interesting read on JMF on wikipedia here
http://en.wikipedia.org/wiki/Java_Media_Framework
The article states:
Many JMF developers have complained that it supports few codecs and formats in modern use. Its all-Java version, for example, cannot play
MPEG-2, MPEG-4, Windows Media, RealMedia, most QuickTime movies, Flash content newer than Flash 2, and needs a plug-in to play the
ubiquitous MP3 format. [3] While the performance packs offer the ability to use the native platform's media library, they're only offered for Windows and
Solaris, the latter rarely used as a desktop OS. Furthermore, Windows-based JMF developers can unwittingly think JMF provides support for more
formats than it does, and be surprised when their application is unable to play those formats on other platforms.
Another knock against JMF is Sun's seeming abandonment of it. The API has not been touched since 1999, and the last news item on JMF's home
page was posted in November 2004.
While JMF is built for extensibility, there are few such third-party extensions.
Furthermore, editing functionality in JMF is effectively non-existent, which makes a wide range of potential applications impractical.

IMovie Importing cuts off during video capture

Hi!
I am in the process of importing a video footage from my mini dv cam tape into iMovie. It seems that iMovie cuts off the video capture after 16 minutes into the duration. I have a 60-minute footage that needs to be captured for iMovie.
Is there a time limit for video captures within iMovie?
Any tips will be greatly appreciated.
Thanks.

Hi
Can it be
- Ken Burns effect
- Zoom in effect
- Image stabilization
All of them enlarhe the picture. Turn them off
- set Crop to ADJUST - and all will be there (letterboxed or columned)
Yours Bengt W

Error Msg Prompted when exit a Video Capture applet

I converted a sample Video Capture App to a applet, when i stoped capturing and exit, this massage prompted:
"The instruction at '0X05a82f30' referernced memory at '0x05aa20f8', The memory could not be 'read'. Click on OK to ternimate the program".
This app will write the captured video file onto local disk, but i've setted the security options in JMF Preference config.
I just wonder why this error message occur?
i'm now working on this applet for my JSP page, i want users can captrue pictures from the WebCam and then save as JPEG images.
I realy appreciate it if any guys can give me some suggestion?

I also writing a applet to do that. But I can work in application model. When I run it in browser . It throw out an error. Following is my code....
FrameGrabbingControl fgc = (FrameGrabbingControl) player.getControl("javax.media.control.FrameGrabbingControl");
tt.setText(fgc.toString()+"\r\n");
Buffer buf = fgc.grabFrame();
tt.append(buf.toString()+"\r\n");
BufferToImage btoi = new BufferToImage((VideoFormat)buf.getFormat());
tt.append(btoi.toString()+"\r\n");
java.awt.image.BufferedImage img = (java.awt.image.BufferedImage)btoi.createImage(buf);
tt.append(img.toString()+"\r\n");
try {
File file = new File("c:\\Testing.jpg");
FileOutputStream out = new FileOutputStream(file);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(img);
param.setQuality(0.7f, false);
encoder.setJPEGEncodeParam(param);
//encoder.encode(buffImg);
encoder.encode(img);
out.close();
} catch (Exception ex) {
ex.printStackTrace();

Detecting Video Capture Devices without Installing JMF

Hi All,
I want to detect the video capture devices, without installing the JMF.
I had included the jmf (windows version) in lib path in netbeans ide. I am able to detect the audio capture device. But unable to detect the video capture devices. But if I install the JMF, I am able to detect the Video Capture devices in My system. Can anyone help me?
Thanks,
Vinoth Kumar.

YES! Please take a look at SIP Communicator project. They have all what u want.
The main idea is copy all .dll files to System or System32 (Please check files which JMF will copy to ur computer and where).
U need to have jmf.jar and sound.jar too ( maybe more) in your computer.
Your program should have DirectSoundAuto.java, JavaSoundAuto.java, JavaSoundDetector.java, JMFInit.java. Those files are in JMStudio source code. They are used to detect all capture devices and register it to JMF, but wait !!! where they will be saved? In order to save information about capture devices which are detected, you should create "jmf.properties" file in the same location with jmf.jar.Therefore, u should modify the JMFInit.java so it can check if the "jmf.properties" exists. If it's not, you have to create it.
Check SIP Communicator at Folder "media" then "device". They have modified those files I mentioned above and created some new files to SC can detect more devices.
Edited by: tamngminh on Sep 16, 2008 9:50 AM

JMF and video capture card?

i wanna ask how can i usea video capture card with the jmf and record video
i try to detect my capture card but the jmf didnt detecte it please pleas help me

hi,
i use a tv-card with my camera through linking them with a composite cable. Also, my tv card has capturing capability and i use JMF to do a capture program with these tools and the result is good for me. The monitor.zip file wihich contains a sample of capturing and monitoring simultaneously exists on sun.com. I use it and it was very helpfull for me.
JMF detects cards through its 'CaptureDeviceManager' which is a controller type object. If you specify like Vector devices = CaptureDeviceManager.getDeviceList(null) -> You will be get the list of appropriate devices on your pc.
Regards,
Erohan

Synched Audio and Video Capture in JMF?

I am in the planning stages of developing a speaker's corner for our university television station. Essentially, a button pressed by the user and a JSamp will send serial data to the computer(PC) that will execute the capture program. Before I proceed further, will I be able to capture both audio and video so that they will be in synch so that I can later bring both into a commercial video editing platform? Also, does the JMF support capture by firwire or USB only? Most of the forums seem to indicate that it is USB. Thanks, and any other advice would be appreciated.
-Steve

bump, thx

JMF bundlejava.lang.RuntimeException: No permission to capture from applets

Hello!
I'm developing a SIP Softphone Applet which works with Java Media Framework 2.1 (uses RTP).
I want to make a jmf bundle for my applet, that is very important for me, because users will not install Java Media Framework.
I have done a jar which contains unpacked JMF, it works very nice when I lunch my applet (jar) as a simple Java application, but NOT IN BROWSER...
I have used JMFRegistry for generate a jmf.properties file that allows devices to be captured from applets...
When I try to run my application from browser one error appears : java.lang.RuntimeException: No permission to capture from applets, because the jmf.jar doesn't detect jmf.properties...
I don't need to use system variables (CLASSPATH), registry because it will require a restart of the system.
Sorry for my bad English and I wish that I have exposed my minds correctly.
Help me please!!!
Thanks!!!

Hi!
1.Are you getting this error in Vista or XP ?
Response:
I have this error on XP. (I've tried this on the Vista, but there are some problems with JMF...)
2. If XP,
a) Do you have any service packs installed in your system ?
Response:
Not, I haven't installed any Service Packs.
b) Which browsers you tried ? In all browsers are you getting this error ?
Response:
I'm tried on Internet Explore and on Firefox. The error is in both browsers.
3. For your Java Application requires JMF to be installed in client machine ?
Response:
Not, I don't need to install JMF on client machine, because I must to bundle JMF in my application...
4. How to create a jar with unpacked JMF ? (is it jmf installer from sun)
Response:
Yes, there is a installer from sun (for Windows is .exe, but on linux there are some problems: some packages are missed).
I use Intellij Idea to develop my Softphone and in this IDE there is a nice plugin "Jar Tool", which can help you to archive...
I have tried to unjar JMF with 7zip, after that I make a jar with Netbeans IDE and it works...
5. Did you singed your applet ?
Response:
Sure, I've signed my applet...
Good luck, friend... If you will resolve this problem (to include jmf.properties somewhere and applet will work from browser...) tell me please...

Including JMF libraries in an applet

I am trying to include JMF libraries in my applet, so anybody who opens a URL in his navigator can see me through my webcam.
To do this, I included customizer.jar, jmf.jar, mediaplayer.jar, multiplayer.jar and sound.jar in my jar distribution to make a test.
The clients run properly, however the just see the movie if they have JMF installed. If they have not JMF installed, no exception is throwed, but still they do not see anything.
Am I missing something? Does JMF uses native libraries?
Any help is welcome. Thanks!!!

I did that already
i.e. what is written in
Q: Can I capture audio or video from within an Applet with JMF 2.1.1?
By default (for security reasons), JMF 2.1.1 does not allow capture from an applet. The user can turn this on by using JMFRegistry.
Run "java JMFRegistry", select the UserSettings tab and check "Allow Capture From Applets". If the browser's security permits loading native libraries, then you will now be able to capture audio/video from an applet.
but the program lines
try
player = Manager.createRealizedPlayer(ml);
FormatControl formatControl = (FormatControl)player.getControl("javax.media.control.FormatControl");
Component co = formatControl.getControlComponent();
Thread.sleep(2000);
player.start();
give always the same error
java.lang.RuntimeException: No permission to capture from applets
java.lang.RuntimeException: No permission to capture from applets
why?
I am working inside the netbeans 6.9.1 editor

JMF Video Capture within Applets

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