英语翻译There are many reasons media adaptation is necessary.Fir

英语翻译
There are many reasons media adaptation is necessary.First,the diversity of network types that IMS supports requires malleable media content to fit network pipes of different bandwidth.Second,the common use of portable terminals requires compalibility with the drastically different processing power and display screen sizes.Third,the existence of a large number of video compression standards and the lack of a common baseline standard mean terminals might support mutually incompatible video formats.Media adaptation is a technique that addresses these differences.Transcoding techniques for these conventional purposes are important and well researched.In addition to differences that require media adaptation,mobile applications also present three unique challenges.Mobile applications require increasing interactivity between the service provider and the end user.Mobile communication mostly occurs through error-prone and lossy channels .Mobile terminals often have power constraints.In the article,we discuss how the same transcoder can ,with dynamic feedback,achieve the conventional media adaptation goals as well as address these three important mobile communication challenges.

有很多理由媒体适应是必要的.首先,不同的网络类型IMS支持需要锻铸媒体内容,以适应不同的管道网络带宽.第二,共同使用便携式终端需要compalibility大大不同的处理能力和显示屏幕尺寸.第三,存在大量的视频压缩标准,以及缺乏一个共同的基线标准意味着终端可支持互不兼容的视频格式.媒体适应是一个技术,解决这些分歧.转码技术的这些常规的目的是重要的和深入研究.除了媒体的差异,需要适应,移动应用软件也存在三个独特的挑战.移动应用的需要不断增加之间的互动服务供应商和最终用户.移动通信主要是通过易错和损耗渠道.移动终端往往有权力的制约.在文章中,我们讨论如何同可转换,动态反馈,实现传统媒体适应目标以及解决这三个重要的移动通信的挑战.