JMF提供了对RTP／RTSP(实时传送协议和实时流转协议)的支持，通过协议时得出的反馈机制的方向。实现一种基于JMF的RTP／RTCP传输模型的整体设计。实现了一个动态的网络反馈机制，并利用其提供的动态的反馈信息实现了对发送端和接收端Buffer的控制，保证流媒体传输的QoS。以提高流媒体传输的效率。-JMF provides RTP/RTSP (Real-time Transport Protocol and real-time transfer protocol) support, through the agreement reached in the direction of the feedback mechanism. Implement a JMF-based RTP/RTCP transmission model' s overall design. Implements a dynamic network feedback mechanism, and the use of its dynamic feedback to achieve the sending and receiving ends Buffer control, to ensure media streaming QoS. In order to improve the efficiency of streaming media transmission.