Comparative Study Of Huffman Coding, SBAC and CABAC Used In Various Video Coding Standars And Their Algorithm

This paper represents the Algorithm for various Coding standards such as Huffman coding, Syntax based arithmetic coding and Context Adaptive Binary Arithmetic Coding used in MPEG, H.263 and H.264 respectively and their analysis. We found that average bit per symbol (average code word length) for Huffman coding is nearly equal to Entropy which is the basic requirement, for different bit rate PSNR is calculated with and without SBAC and finally we discuss Block diagrams of CABAC codec of H.264/AVC and Modified parallel algorithm for CABAC. Experiments demonstrate that this SBAC provide the improvement of up to 1dB over conventional H.263. For a set of test sequences representing typical material used in broadcast applications and for a range of acceptable video quality of about 30 to 38 dB, average bit-rate savings of 9%-14% are achieved.