 30 fps Bit rate (U, V) Mbps @ 30 fps values according to the input probability density function many of the basic concepts introduced in the discipline (pdf). Predictive coders are suited to information sources of information theory or statistical communications that have memory, i.e., a source in which each value has theory [8]. The discussion of VLC and predictive a statistical dependency on some number of previous coders requires the use of information source models to and/or adjacent values. Predictive coders can produce lay the statistical foundation for the development of a new source pdf with significantly less statistical varia- this class of encoder. An information source can be tion and entropy than the original. The transformed viewed as a process that generates a sequence of source can then be fed to a VLC to reduce the bit rate. symbols from a finite alphabet. Video sources are Entropy and predictive coding are good examples for generated from a sequence of image blocks that are presenting the basic concepts of statistical coding theory. generated from a "pixel" alphabet. The number of Block transformations are the major technique for possible pixels that can be generated is 2n, when n is representing spatial information in a format that is highly the number of bits per pixel. The order in which the conducive to quantization and VLC encoding. Block image symbols are generated depends on how the transforms can provide a coding gain by packing most of image block is arranged or scanned into a sequence of the block energy into a fewer number of coefficients. The symbols. Spatial encoders transform the statistical quantization stage of the video encoder is the central nature of the original image SO that the resulting co- factor in determining the rate-distortion characteristics efficient matrix can be scanned in a manner such that of a video compression system. It quantizes the block the resulting source or sequence of symbols contains transform coefficients according to the bit rate and dis- significa