The media port is used to stream live video when you access the devices via Reolink Client or Reolink App.

Applies to: All Reolink cameras except battery-powered cameras and the cameras in the NVR kits 

The media port is turned on by default. The default value of the media port for Reolink cameras is 9000.

You may refer to How to Set up Reolink Ports Settings to gain more information.