: Often refers to "Advanced Digital Network" or a specific model line for digital video recorders (DVRs) or network video recorders (NVRs).

: Frequently stands for "Cloud Storage," "Customer Service," or "C-Series" hardware.

: Using "Deep Learning" or "Motion Detection" features often found in Hikvision or similar security systems to search for specific actions within the video.

: Likely represents the model number, resolution, or a specific channel/camera identifier.