MPEG4的多媒体在网络传输中，为了提高网络的可靠性（QoS）等，需要传输的MPEG按照传输的内容分类，本为给出一种有效的分类方式-MPEG4 multimedia in network traffic, in order to improve network reliability (QoS) and so on, need to transfer in accordance with the MPEG transport the contents of the classification, this classification is given in an effective manner