I have now set up my Contacam system on an old PC with the onvif feed, it’s Excellent I have set up mask’s to avoid the plants from setting of the motion detection and all motion detection events are represented by scrolling thumbnails so you can watch the event without having to watch the video.
Contacam is now ten bucks. You still get the full program but it’s watermarked. If you can track down an older version like 7.7 the latest being 9. Something there is no watermark.