清华大学课件流媒体网络传输特性.pdf

Outline Review Review Providing QoS in the Internet Providing QoS in the Internet 五道口生活网 五 道 论坛 Review HTTP GET Web Web Streaming Media browser presentation desc. server Streaming Media three types of MM app. three types of MM app. RTSP RTSP/RTCP/RTP RTSP/RTCP/RTP media RTCP media Application adaptations in player server Application adaptations in best-effort networks RTP best-effort networks  dealing with variable delay  dealing with variable delay - playout buffer client server - playout buffer  dealing with packet loss  dealing with packet loss - FEC MDC - FEC MDC … …  dealing with variable bandwidth  dealing with variable bandwidth - SVC like FGS - SVC like FGS … 五道口生活网 五 … 道 论坛 Real-time Streaming Challenges High bandwidth High bandwidth Audio and video must be played back at the Audio and video must be played back at the rate they were sampled (voice may be even rate they were sampled (voice may be even more difficult) more difficult) Multimedia data streams are bursty Multimedia data streams are bursty 五道口生活网 五 道 论坛 Real-time Streaming Challenges Multimedia data streams are bursty Multimedia dat