class  nvrCameras
{
public:
    NetworkAVInput *cam;
    Detector *motion; // keeping two detectors as they can run in parallel
    Detector *face;
    Recorder *event; // will either store video or images
    RateLimiter *rate; // will modify rate of output
    LocalFileOutput *fileOut; // will store images to disk, and we'll feed in rate as its input, not cam

};