| In recent years the video communication of which main service is video conference develops quickly.We have done extensive investigation and needs analysis,and discovered that the kind of safe,efficient video communication system demand space is very big.This kind of video system mainly includes the video capturing, displaying, video coding, decoding, video encryption, decryption,network etc.It's special characters decides a higher request when we choose the encoding standard, security of transport,network performance.According to these condition ,we contrast the function of AVS with MPEG-2, H.264 etcTo discover that we can adopt AVS as the encoding standard, and a very important reason is that it have the completely independent intelligent property.The video usually has a amount of data, to guarantee the safety we can adopt source encryption After contrasting several kinds of encryptions methods,we discover that partial source encryption can effectively operate the function of protection.We also analyze the characters of IPv6, discover that it has the good function in the QoS guarantees.These can provide a good guarantee for the video communication.On the foundation of the above work,we choose the AVS video encoding standard,adopt the Selective video encryption Algorithm and combine the IPv6 to design a set of frame which faces to video application in the national key region. |