By default, Nx Witness automatically determines which RTP media streaming protocol to use for a camera: UDP (faster, but less reliable) or TCP (more reliable, but slower). However, sometimes a camera may have issues streaming via the automatically selected protocol. If that is the case, you can manually set the RTP protocol as follows.
IMPORTANT: Do not change these settings unless you are absolutely sure of their potential impact on your system performance.
1.Use the camera's context menu to open Camera Settings -> Expert.
2.In the RTP Transport menu select TCP or UDP.
3.Click Apply, OK or Cancel.