视频编码标准H．263码流结构的分析  

Analysis Based on Code Stream Configuration of H.263

作　　者：敬伟[1,2] 高丽[1] 王鹏[1] 汤海[1] 

机构地区：[1]西安工业大学电信学院,陕西西安710032 [2]西北工业大学机电学院,陕西西安710072

出　　处：《现代电子技术》2008年第23期135-138,共4页Modern Electronics Technique

基　　金：陕西省教育厅专项科研计划项目资助(06JK273)

摘　　要：视频编码标准H.263视频复用规定为四层分级结构,从顶向下依次为:图像层、块组层、宏块层和块层。视频编码标准H.263关键技术包含有:图像的帧结构、运动补偿加DCT的混合编码方法以及宏块统一使用同样的量化步长进行量化等。视频编码标准H.263标准的比特流功能、大小和语法在其协议中做了详细的规定,但是产生这些必选码流分支和可选码流分支的条件却很复杂。重点对H.263码流结构中比特流语法里面必选码流分支和可选码流分支的条件进行全面详细的分析。The video multiplex is arranged in a hierarchical structure with four layers. From top to bottom the layers are： picture layer, group of blocks layer, macroblock layer, block layer. Four negotiable coding options are included：unrestricted motion vectors mode, advanced prediction mode, PB - frames mode and syntax- based arithmetic coding mode. Bit stream about function, size and syntax have been defined particularly in the protocol of H. 263 and they are not given unnecessary details in this paper. But it is complex that the condition on generating the unnecessary branches in this bit stream syntax. The condition on generating the necessary branches and unnecessary branches in the bit stream syntax of code stream configuration of H. 263 is researched in detail as follows.

关 键 词：视频编码 H.263 码流结构 PB帧 

分 类 号：TN919.81[电子电信—通信与信息系统]