What is the function of a video encoder in a CCTV system?

The function of a video encoder in a CCTV system is primarily to convert analog video signals into a digital format suitable for network transmission. This process is essential in modern surveillance networks, where digital video can be transmitted over IP networks, enabling remote access, storage, and management of video content. By converting the analog signals captured by traditional CCTV cameras into a digital format, video encoders facilitate easier integration with various network components, such as servers, storage devices, and remote viewing applications.

This transformation allows for improved compression, which helps reduce bandwidth usage while maintaining an acceptable video quality. Consequently, the digital stream can be efficiently handled for live viewing or recording.

The other options focus on different functions or additional features not directly associated with a video encoder. For instance, monitoring and recording audio is typically the role of an audio input device or system rather than the encoder itself. Enhancing video quality and analyzing footage are also functions that might be performed by other components like video management software or specialized hardware but not the encoder’s main function.