Video Recording and Playback
James C. Foust, Edward J. Fink, Phil Beskid, Jose A. Cardenas, Robert J. Gordon, James B. Lohrey · 2024
Chapter 11 addresses the basic control function of recording and playing back audio and video content. The ability to record and play back video signals is crucial to nearly any video production. The chapter begins with a technical discussion of how video is recorded, channeled and stored in digital form. It discusses the technical challenges involved with video due to its resource intensity, high bandwidth requirements, and need for precise synchronization. Ancillary equipment such as time code generators, sync generators, waveform monitors, vectorscopes, and frame synchronizers are also discussed. The next section of the chapter addresses video encoding, which is the process of putting video in digital form or changing format. This includes a discussion of compression, and specific compression formats used in the industry. The basic operation of video servers, which are used to save video information, is also addressed. The chapter concludes with a discussion of how to save video into different formats for different use scenarios, such as broadcast television or social media.