C++：为什么我调用的OpenCV，提示我未定义标识符

Question

    int framecount=video.get(CAP_PROP_FRAME_COUNT);
    int fsp = video.get(CAP_PROP_FSP);
    int cols=video.get(CAP_PROP_FRAME_WIDTH);
    int rows = video.get(CAP_PROP_FRAM_HEIGHT);