setFrameProcessingFormat not applied

[openmotion]

hello
i i change the frame processing format (setFrameProcessingFormat) for example
mCameraView.setFrameProcessingFormat(ImageFormat.RGB_565);
the frame format doesn't change : 17

mCameraView.addFrameProcessor(new FrameProcessor() {

int getFormat = frame.getFormat(); --> 17

is it normal ?
thanks