What is the function of a video server in a broadcast facility?

The function of a video server in a broadcast facility is primarily to store and play back video content on demand. This is essential for managing the large volumes of video material that broadcasters handle. Video servers allow for efficient storage and retrieval of video files, ensuring that programming can be accessed quickly when needed. They also facilitate the seamless playback of pre-recorded content during live broadcasts or scheduled shows.

Moreover, video servers support various video formats and resolutions, which is crucial for maintaining compatibility across different platforms and devices. This capability enables broadcasters to manage their content libraries effectively, delivering high-quality video to viewers without disruptions.

In contrast, while editing and creating graphics are important functions in video production, they are typically handled by dedicated editing software and graphic design tools rather than video servers. Similarly, live streaming is a function that may involve video servers, but it is not their primary purpose. The main role remains focused on on-demand playback and storage, making option C the correct answer in this context.