How to set dimension and another parameters of received dataSource to rec?

Question

I have a small problem with set the dimension of recording video from received dataSource.
It always have dimension of original dataSource :/
I have done something like this:
  FileTypeDescriptor ftd = new FileTypeDescriptor(FileTypeDescriptor.MSVIDEO);
  Format[] formats = new Format[] {new VideoFormat(VideoFormat.CINEPAK, new Dimension(1024,768), Integer.MAX_VALUE, Format.byteArray, (float)30)};
  ProcessorModel pm = new ProcessorModel(datasource, formats, ftd);
   processor = Manager.createRealizedProcessor(pm);
  DataSource outputDS = processor.getDataOutput();
   MediaLocator ml = new MediaLocator("file:capture.avi");
   datasink = Manager.createDataSink(outputDS, ml);
   datasink.open();
   datasink.start();
I see that Datasource is not changed.
But when I try to something like this:
FormatControl formCont=((CaptureDevice)ds).getFormatControls()[0];
   VideoFormat formatVideoNew = new VideoFormat(null,null,-1,null,(float)camFPS);
   formCont.setFormat(CapFormat.intersects(formatVideoNew));
I have an exception with casting Clonable dataSource to CaptureDevice:
java.lang.ClassCastException: com.ibm.media.protocol.SuperCloneableDataSource$PushBufferDataSourceSlave cannot be cast to javax.media.protocol.CaptureDeviceThis works only when I'm operating od datasource taken from capturedevice, not received from another computer.
The question is simple: How can I change dimension, frameRate etc. of record from received dataSource.

Answer 1

FormatControls are only available on capture devices that have the ability to capture in multiple formats. The FormatControl is used to control the device itself, not the stream. The concept of using a FormatControl on a DataSource that isn't reading from a capture device doesn't make sense, which is why you're having problems.
In order to change the resolution or other format characteristics of a video stream that isn't coming from a capture device directly, you'll need to transcode it from the existing format to the new format.
[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/Transcode.html]
Which is achieved by passing it through a Processor...