//a client side
    ParcelFileDescriptor pfd = ParcelFileDescriptor.fromSocket(clientSocket);
    pfd.getFileDescriptor().sync();
    mediaPlayer.setDataSource(pfd.getFileDescriptor());
    mediaPlayer.setDisplay(videoView.getHolder());
    mediaPlayer.prepare();
    mediaPlayer.start();


    //a server side:
    mediaRecorder = new MediaRecorder();
    ParcelFileDescriptor pfd = ParcelFileDescriptor.fromSocket(client);

    camera = getCameraInstance();
    camera.unlock();

    mediaRecorder.setCamera(camera);
    mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
    mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
    mediaRecorder.setOutputFile(pfd.getFileDescriptor());
    mediaRecorder.setPreviewDisplay(videoView.getHolder().getSurface());
    mediaRecorder.prepare();
    mediaRecorder.start();'