Nx Witness User Manual

By default, Nx Witness automatically determines the optimal settings that it will use to pull video streams from the camera. However, some cameras use their own proprietary settings that cannot be properly determined. In this case streaming may be unstable.

In this case it is possible to set them manually. To access those settings, use the camera's context menu to open Camera Settings > Expert > Media Streaming.

IMPORTANT: Do not change these settings unless you are absolutely sure of their potential impact on your system performance.

The following streaming settings can be manually specified:

•RTP Transport. By default, Nx Witness automatically determines the optimal protocol (Auto).

•Media Port. This is the port used for RTSP communication. By default, 554.

•Trust camera timestamp. By default (disabled), Server puts its own timestamps in the archive, overriding the data coming from cameras. However, if the stream is intermittent, Server may incorrectly put timestamps and this may affect the archive browsing. This option will make the Server trust timestamps coming from the camera, as long as the time difference between the Server and camera is less than 10 seconds. In this mode, network delay doesn’t affect the timestamp.

Also, Server may push time settings to cameras to make sure the timestamps are synchronized. This is especially important for Edge cameras. See "Time Synchronization between Servers and Cameras".