摘要随着多媒体应用的发展，越来越多的场合要求视频数据能在不同格式、不同标准间进行交换。为了使得异构网络之间、不同种类的接入设备之间能够无缝连接，需要研究压缩视频流之间的转码。不同时期、不同用途的多媒体终端使用多种不同的视频编码标准，要实现它们之间的互连互通，也必须研究视频编码转换算法。
H.264是由ITU-T和ISO/IEC联合成立的小组JVT提出的新的视频编码国际标准。该标准采用了一系列先进的视频压缩编码算法，与以往标准相比，压缩性能有了很大提高，成为多媒体业务应用中广泛采用的视频编码标准。在综合比较了当前主流视频编码标准的特点之后，本毕业论文分析了H.264作为下一代视频编码国际标准在技术、性能以及产业发展方面的优势。在深入研究H.264关键技术的基础上，分析比较了H.264标准的若干开源参考模型的综合性能，最终选择了JM10.1来搭建转码平台。6495
关键词：H.264   视频转码   视频编码标准   视频转码平台   JM10.1  
毕业设计说明书（论文）外文摘要
Design and Implementation of H.264 video transcoding
Abstract
With the development of multimedia applications, more and more occasions require the video data can be exchanged between different formats and different standards. The sake of making heterogeneous network between the different types of access equipment to seamlessly connect, you need to study between the compressed video stream transcoding. Different times, different uses of multimedia terminals using a variety of different video coding standard, to achieve the interconnection between them must also be video transcoding algorithm.
H.264 is a new video coding JVT of the group set up jointly by the ITU-T and ISO / IEC international standard. The standard uses a series of advanced video compression algorithm, compared with the previous standard, the compression performance has been greatly improved and become widely used video coding standard multimedia business applications. After comprehensive comparison of the current mainstream video coding standard features, this paper analyzes the advantages of H.264 as the next generation of video coding international standards in technology, performance, and industrial development. Compared on the basis of the key technologies in-depth study of H.264, the H.264 standard open-source reference model performance, and ultimately chose JM10.1 to set up transcoding platform.
Keywords：H.264   Video transcoding   Video coding standard   Video transcoding platform   JM10.1
目录
1  引言    1
1.1  课题背景及研究意义    1
1.2  视频编码标准发展现状    2
1.3  本人工作及论文安排    4
2  H.264视频压缩编码标准介绍    5
2.1  H.264标准特点    5
2.2  H.264标准结构    6
2.3  H.264编解码器框架    8
2.4  帧内预测    9
2.5  帧间预测    11
2.6  整数变换技术    14
2.7  量化    15
2.8  环路滤波技术    15
2.9  熵编码技术    15
3  设计方案和JM代码分析    17
3.1  H.264开源编解码器分析与比较    17
3.2  JM编码器分析    18
3.3  JM解码器分析    20
4  转码平台搭建和实验结果分析    25
4.1  跳帧转码    25
4.2  降码率转码    28
5  界面转码程序设计与实现    30 H．264视频转码的设计与实现+文献综述:http://www.751com.cn/tongxin/lunwen_4076.html