A Seamless Switching Method of Scalable Video Bitstream Based on UIB
Jian Zhang · Chinese Journal of Computers · 2007
A novel seamless switching method of scalable video stream is presented.Firstly,a mathematics model with unequal interval of bandwidth is established by the character of scalable video bitstreams.The video server processes the request of switching up and switching down differently based on seamless switching and this model,with different effect on network congestion.Then switching is judged according to the average variation and instantaneous variation of bandwidth.Simulation results show that this scheme can gain about 0.4dB in PSNR compared with the simple seamless switching method.Adapting to network are improved rapidly.