Analog CCTV is the most established, and continues to be the most commonly used.   Security technology: specifically for smaller camera count, single-site applications. Analog systems include one or more analog cameras that transmit video via coaxial cabling, which connects directly to an analog DVR (digital video recorder). The DVR uses video capture cards to convert the analog signal to a digital signal for storage and network transmission.

Traditional analog systems offer resolutions ranging from CIF (352 x 240 pixels) to D1 (720 x 480 pixels) and recent analog technology offerings promote even higher resolutions of up to 960H (960 x 480 pixels).

However; while analog solutions are capable of capturing clean video evidence, these maximum resolutions limit the ability to digitally zoom in on live and recorded video without significant loss of image clarity and typically do not provide the level of detail required for applications such as facial recognition or license plate identification.