Trying to set the render rectangle of the video sink

gistfile1.txt

        let video_sink = gstreamer::ElementFactory::make("d3d11videosink", None).unwrap_or_else(|err| {
            println!("{:?}", err);
            panic!();
        });

        let video_sink_cast = video_sink.clone().dynamic_cast::<gstreamer_video::VideoOverlay>().unwrap();

        unsafe {
            let rwh = display.gl_window().window().raw_window_handle();
            let hwnd = match rwh {
                raw_window_handle::RawWindowHandle::Windows(windows_handle) => Some(windows_handle.hwnd),
                _ => None
            };
            video_sink_cast.set_window_handle(hwnd.unwrap() as usize);
        }

        video_sink_cast.set_property("fullscreen", &false).unwrap();
        video_sink_cast.set_render_rectangle(0, 0, 200, 200).unwrap_or_else(|err| {
            println!("{:?}", err);
            panic!();
        });
        video_sink_cast.expose();


        playbin.set_property("video-sink", &video_sink).unwrap_or_else(|err| {
            println!("{:?}", err);
        });