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随着计算机和网络技术的迅猛发展，多媒体技术开始越来越深刻地影响以致改变我们的生活、工作和受教育的方式。视频技术是多媒体技术的重要组成部分，高效优质的数字视频压缩技术对于多媒体技术的普及是不可少的。已有一些数字视频压缩标准被提出并被广泛应用，本文实现的是ITU最新提出的适用于目前话音线路的极低码率视频压缩和解压缩算法，该技术适合于电话线路上进行的视频电子会议及其它一些相关应用。
With the rapid development of computer and network technologies, multimedia technologies are beginning to have an increasingly profound effect on the way we change lives, work and education. Video technology is an important part of multimedia technology, efficient and high quality digital video compression technology is indispensable for the popularization of multimedia technology. Several digital video compression standards have been proposed and widely used. This paper implements the very latest algorithm of video compression and decompression for the current voice line proposed by ITU, which is suitable for video-electronic conference on telephone line And other related applications.