What does the term 'bandwidth' refer to in a CCTV context?

In the context of CCTV, 'bandwidth' specifically refers to the total amount of data transmitted within a given time frame. This is crucial because a CCTV system transmits video streams that can vary in resolution and quality. Higher resolution cameras generate more data and therefore require more bandwidth for transmission.

Understanding bandwidth is important for system design and infrastructure management, ensuring that there is enough capacity for the video data to travel without delay or loss of quality. Proper bandwidth allocation ensures that images are transmitted smoothly and efficiently, especially in systems with multiple cameras or in environments that require high-definition video.

The other options focus on different aspects of a CCTV system—physical space, installation costs, and power consumption—none of which pertain to the technical definition of bandwidth in this context.