: Often used in these strings as a shorthand for "update" or "updated," referring to the refresh frequency or a command to update the current frame of the camera feed. Context and Use
/multicameraframe?mode=motion&upd=1
This parameter often directs the interface to a view focused on motion-detection activities or specific camera frames triggered by movement. Google Groups Purpose and Risks Locating Cameras: inurl multicameraframe mode motion upd