PCR-assist CBR for delivering pre-recorded MPEG-2 transport streams
ICMCS '97 Proceedings of the 1997 International Conference on Multimedia Computing and Systems
Adaptive media playout for low-delay video streaming over error-prone channels
IEEE Transactions on Circuits and Systems for Video Technology
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In this paper, we present a practical end-to-end video transmission system with refined rate allocation at the server and adaptive playback adjustment at the client that enables High Definition (HD) video streaming via bandwidth-constraint IP network. A transmission rate is determined by a rate control algorithm which employs the Program Clock References (PCR) embedded in the video streams to regulate the transmission rate in a refined way and thus reduce the client buffer requirement. An over-boundary playback adjustment mechanism based on Proportional-Integra (PI) controller is performed at the receiver to maximize the visual quality of the displayed video according to the receiver buffer occupancy. We test our system with Standard Definition Television (SDTV) and High Definition Television (HDTV) traces, and find that our proposed algorithm can reduce overflow and underflow of sender and receiver buffer, and achieve better video quality and quality smoothness than traditional rate control algorithms.