第二章介绍了多媒体终端的相关技术，包括主流软硬件平台选择和音视频编解码技术。

Chapter 2 introduces relevant techniques of Multimedia Terminals, including the selection of mainstream hardware and software platform, video-audio codec techniques and etc.

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在园区网上我们采用了最新的MPEG - 4编解码技术对音视频进行压缩，较好的解决了有限成本前提下码流大小与媒体质量的平衡问题。

We compress the AV media with the MPEG-4 on the campus network and commendably solve the balance problem between bit rate size and media quality under the limited cost.

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