Play .3gp-files with JMF (jffmpeg)

Question

Hello,
for a MMS-Application I'm trying to show 3gp-files with Java. I heard that it should work with jffmpeg but I still couldn't get it to work.
I added the Codec:
String JFFMPEG_VIDEO = "net.sourceforge.jffmpeg.VideoDecoder";
try {
    Codec video = (Codec) Class.forName(JFFMPEG_VIDEO).newInstance();
    PlugInManager.addPlugIn(JFFMPEG_VIDEO,
            video.getSupportedInputFormats(),
            video.getSupportedOutputFormats(null),
            PlugInManager.CODEC);
} catch (Exception e) {
    e.printStackTrace();
}and then started the player.
It already works for mpg-Videos, but if the file-extension is .3gp the player throws a javax.media.NoPlayerException: Cannot find a Player for : file://C:/test.3gp
When I change the file-name to test.mpg the player initializes but doen't show a picture.
How can I register the 3gp-extension? Or is anything else missing?
Thanks in advance for any hint :-)

Answer 1

I still didn't get it to work as I need it, but I made some progress so far:
Instead of jffmpeg I used the FOBS for JMF Package (http://fobs.sourceforge.net/index.html) in addition with the JMF.
Using this package allows you to play a 3gp-Video in Swing that is stored in your filesystem (!).
I'm still having two problems with this solution:
- I use a Java Webstart-framework and can't acces the user's harddisk, so I need to play the 3gp-Videos directly from memory (they are stored as byte[] in a database), but the current version of FOBS is limited to 3gp-Playback only from filesystem.
- Each user of the application has to download and install JMF and FOBS for their OS (system-specific libraries). Especially FOBS is not always very easy to install, because it needs to change some of the jmf.properites. This can not be done with the JAR-distribution-System of WebStart and I'm expecting problems, when the users try to install both packages on their own.
If you are developing a plain Swing-Application you might be satisfied with the possibilities of FOBS and JMF.
Good luck :-)