Analysis of video codec buffer and delay under time-varying channel
VCIP（2012）
摘要
In this paper, we analyze the effect of time-varying channels to video codec buffer specially for low-delay applications. We derive the sufficient conditions under which an encoder can design a bitstream for any time-varying channel without decoder buffer overflow and underflow. We then apply those conditions to design a bandwidth adaptive rate control in x264 and test it under LTE simulator. Our test results show significant improvement of delay and delay jitter over traditional leaky bucket models.
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关键词
video codec buffer analysis,delay,decoder buffer underflow,time-varying systems,vbv,leaky bucket model,hrd,jitter,lte simulator,h.264/mpeg-4 avc,time-varying channel,rate control,low-delay applications,long term evolution,decoder buffer overflow,lte,video codecs
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