CMMB（中国移动多媒体广播）目前提供CCTV-新闻、CCTV-1、CCTV-5、睛彩电影、睛彩天下5套全国节目和2套地方节目。随着CMMB用户数量的逐年增长，用户对节目质量和数量提出了新的要求。原有的节目数量已无法满足用户需求。为解决此问题，需要在现有节目的基础上增加多套节目。而根据目前带宽资源的使用情况，已无法增加更多节目，严重制约了CMMB行业的快速发展。所以要求将现有视频节目压缩，占用更少带宽资源，增加更多的视频节目，同时保持压缩后的视频节目呈现效果不降低，提高手机电视业务吸引力。 本文通过对视频压缩编码的理论进行分析，重点介绍了H.264/AVC编码的流程，在此基础上提出了快速帧内预测算法。通过直方图的方式，将帧内预测模式的种类由592种降低为了132种，大大降低了所需要进行的帧内预测的种类。本文提出的算法在几乎不降低峰值信噪比的前提下，极大的降低了编码的复杂度。同时使用自适应均值对dead-zone进行适当的调整，从而优化了自适应过程，提升了信噪比增益。将本文提出的算法实际的应用在编码器当中进行检验，证明其对视频编码质量有着正向提高作用。从而为优化CMMB系统的信道传输提供了一种切实有效的方法。

CMMB ( short for China Mobile Multimedia Broadcasting ) has currently been available such as CCTV- news, CCTV-1, CCTV-5, “colorful eyesight film”; “colorful world” etc. 5 set of national programs and 2 sets of local program. With the number of CMMB users increasing year by year, new requirements and demands has been aroused in the quality and quantity of the program. The numbers of the original programs have been unable to meet the needs of users. In order to solve this problem, it needs to increase several sets of programs based on the existing program before. According to the current use of bandwidth resources, it is hardly able to add more new programs, thus result in seriously restriction of the rapid development of CMMB industry. So video compression comes up and handles this issue. It occupies less bandwidth resources; meanwhile add more video programs with maintaining the high quality video presentation. It therefore caters to the needs of new market and also enhances attraction of the mobile phone television business. This article analyzed by video compression coding theory, focusing on the H.264/AVC coding process, puts forward a fast intra prediction algorithm. By way of histogram, the intra prediction mode from 592 down to 132, greatly reducing the types required for intra prediction. This algorithm in almost without lowering the peak signal-to-noise ratio, greatly reduces the coding complexity. At the same time, the use of adaptive mean to make the appropriate adjustments to the dead-zone, improve the SNR gain. Application of the proposed algorithm was tested at the encoder, proved to improve the video coding quality has positive effects. So as to optimize the channel transmission CMMB system provides an effective approach.