若视频图像每帧的数据量为8.4 MB，帧速率为25帧/秒，则显示10 s的视频信息，其原始数据量为(67)MB。考虑存储和传输的要求，可使用(68)标准对原始视频进行有效的压缩。

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XP is (71) of interesting twists that encourage one to think--for example, how about "Test and then code"? I've worked with software companies and a few IT organizations in (72) programmer performance was measured on lines of code delivered and testing was measured on defects found-- (73) side was motivated to reduce the number of defects prior to testing. XP uses two types of testing: unit and functional. (74) , the practice for unit testing involves developing the test for the feature prior to writing the code and further states that the tests should be automated. Once the code is written, it is immediately (75) to the test suite bringing instant feedback.

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MPEG-4是(53)，MPEG-4主要由音频编码、视频编码、数据平面、(54)、缓冲区管理和实时识别等部分构成，其中数据平面包括(55)两部分。

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