翻译一段文字，机翼勿入，谢谢。

在局域网的实验环境下，本系统实现了对现场环境的网络视频监控功能，包括编码后视频数据存储、录像、回放、抓拍、云台的控制和运动报警等。 Under the experimental environment of LAN, this system can be able to conduct the network viedo monitoring of the field environment including the viedo data storage, recording, replaying, capturing, the control of tripod head and moving(automatic) alarm after coding.

在对动态画面进行编码时，可以实现40：1的压缩比，解码出的视频文件分辨率为720×576，解码播放的速率为25.62fps，播放时画面流畅、没有出现失真和明显的块效应。
While coding for the dynamic pictures, the system can achieve the compression ration of 40:1, the resolution of the decoded viedo file is 720*576, the rate of decoding play is 25.62fps, and it has smooth picture without distortion and obvious blocking effect.

通过对系统的测试，表明了系统设计的正确性、稳定性和可行性。 Throught the test for the whole system, it shows the accuracy, stability and feasibility of the system disign.

Experimental in LAN environment, the system environment to achieve the on-site video surveillance network functions, including encoded video d