Researches On Key Issues Of Video Compression Based On H.264

In 2003, the Joint Video Team (JVT) formed by the ITU-T Video Coding Experts Group (VCEG) and the ISO Motion Picture Experts Group (MPEG) published a video compression coding international standard, which will be two identical standards: ISO MPEG4 Part 10 of MPEG4 and ITU-T H.264. The "official" title of the new standard is Advanced Video Coding (AVC); however, it is widely known by its old working title H.26L and by its ITU document number H.264.H.264 offers significantly better video compression efficiency than previous ITU-T standards and MPEG standards, but its computational complexity is too large for implementation. In this paper, some key issues in video coding and decoding based on H.264, including complexity for implementation, integer transform and error resiliency are studied. Finally a video coding and decoding system DEMO in software is implemented.The main work of this paper is just as below: Analyze the complexity for implementation of the key modules of H.264 encoder. Compare and analyze the DCT, the integer transforms and the binDCT, the experimental results show that the binDCT with right parameters in H.264 can not only reduce the complexity but also be more efficient. Introduce the usage of an ARQ scheme based on Continuous Error Detection (CED) technique, to improve error resiliency of arithmetic coding adopted by H.264. Tradeoff between added redundancy and error-detection performance is considered, achieving significant improvement in error resiliency ability of H.264.