Windows viewing
RTSP Viewer Windows
For an RTSP viewer Windows workflow, use VLC for quick playback, ONVIF Device Manager for discovery, and an NVR app if Windows must record continuously. SmartRTSP is the cleaner viewer for iPhone, iPad, and Mac once you know the URL.
Quick answer
If your goal is to find a camera URL on Windows, start with RTSP scanner Windows. If your goal is to view cameras daily on Apple devices, add the discovered RTSP URL to SmartRTSP.
VLC
Good for a one-stream test.
Agent DVR / Blue Iris
Good when Windows is the always-on recorder.
SmartRTSP
Best when you want native Apple viewing and alerts.