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Today, when the content provider transmits a video, he usually uses forward error correcting to protect the packets which caused a lot of redundancy. If we know parts of the media stream are more important than others, we can uses bandwidth more efficiently. In this paper, we analyze the structure of the video stream, the frame types and the dependence among frames and propose an optimized scheme...
As the increasing requirement for securing and the development of communication technology, network technology and computer technology, the video surveillance based on CDMA1x has developed quickly in this few years. In order to adapt the characteristic of CDMAlx wireless network environment which is low bandwidth and high bit error rates, what kind of video coding to choose should taken into account...
In this paper, we propose an improved rate control scheme for low delay H.264 video coding. A fast and best selection of initial QP is first proposed in the GOP layer rate control. Then, an improved MAD prediction model and overhead bits prediction method is adopted in the MB layer rate control. The simulation results show that the proposed scheme gives an average PSNRY gain of about 0.55 dB when...
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