This module provides an introduction to the generation, distribution and transmission of both analogue and digital video signals. It examines the conceptual building blocks of video, and the respective strengths and weaknesses of analogue and digital variants. It covers issues such as video resolution and how it affects data rates. Data rate reduction techniques and technologies are examined in relation to the various perceptual coding domains. Finally various video file formats are introduced, with a focus on their interchangeability within the broadcast chain.