JMFSecurityManager -UnsatisfiedLinkError

[apur]

HI,
I am working on a program to transcode from one format to another, in which the files have to be encoded or decoded.
I am using Codecs to this.

While decoding:
the encoding string is "dvsd" , I want to change to uncompreed file.

If I use codec
com.sun.media.video.vcm.NativeDecoder();
The error I am getting is com.sun.JMFSecurityManager shows
UnSatisfiedLinkError and no jmvcm in java.library.path


While encoding
the encoding string is "RGB", & file has to be changed to
compressed one.
If I use com.sun.media.jpeg.NativeEncoder();
the error is Unable to realize the processor
cannot build a graph for the format
Unable to add customed codecs
Realization failed

//
Codec videoCodec[]=new com.sun.media.video.vcm.NativeDecoder();
trackControl.setCodecChain(videoCodec);
//


Can anyone help me in this regard.
Is there any method for calling native methods.
How to realize the processor.

Or is there any other way to Compress, & uncompress.

Can anyone please Help,

It is very urgent.

Please...

Thanks in advance