Goals and prerequisites

The lesson deals with video processing. Previous lesson as well as lessons concerning lossless and transform coding should be completed before reading this lesson.

Macroblock

Each sequence image is divided into macroblocks. A macroblock is a structure of 16•16 luminance samples block and two appropriate chrominance blocks (8•8 for 4:2:0 scheme, see the picture on the next page).

A macroblock is the basic compression structure.

Each macroblock is coded independently. Type and parameters of compression may be changed individually for each macroblock (but not inside a macroblock).