@Override
      public void onPreviewFrame(final byte[] data, android.hardware.Camera callbackCamera) {
        Camera.Parameters parameters = callbackCamera.getParameters();
       int imageFormat = parameters.getPreviewFormat();
          if (imageFormat == ImageFormat.NV21)
          {
          Rect rect = new Rect(0, 0, 320, 240);
          YuvImage img = new YuvImage(data, ImageFormat.NV21, 320, 240, null);
          OutputStream outStream = null;
          File file = new File(Environment.getExternalStorageDirectory().getPath() + File.separator +
                  "VID_local_image" +  ".jpg");
          try
          {
            outStream = new FileOutputStream(file);
            img.compressToJpeg(rect, 100, outStream);
            outStream.flush();
            outStream.close();
          }
          catch (FileNotFoundException e)
          {
            e.printStackTrace();
          }
          catch (IOException e)
          {
            e.printStackTrace();
          }
        }
}