A stable buffer control strategy for MPEG coding

This paper presents a new buffer control strategy that regulates the coded bit stream generated by MPEG video codec so that it can be transmitted robustly. This buffer control strategy is regarded as regulating the compressed bit stream to transmit with (pseudo) constant bit rate (CBR) through a fix...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems for video technology 1997-12, Vol.7 (6), p.920-924
Main Authors: CHANG, C.-F, WANG, J.-S
Format: Article
Language:English
Subjects:
Applied sciences
Automatic control
Bandwidth
Bit rate
Coding, codes
Exact sciences and technology
Fluctuations
HDTV
Image processing
Information, signal and communications theory
Layout
Signal and communications theory
Signal processing
Streaming media
Telecommunications and information theory
Transform coding
Video compression
Video on demand
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Summary:This paper presents a new buffer control strategy that regulates the coded bit stream generated by MPEG video codec so that it can be transmitted robustly. This buffer control strategy is regarded as regulating the compressed bit stream to transmit with (pseudo) constant bit rate (CBR) through a fixed rate channel. It dynamically adjusts the quantizer scale for each frame under the consideration of the steady level of coding quality, the allocated bandwidth of transmission, the level of buffer occupancy, as well as the scene change. In the simulations, this strategy is implemented on MPEG coding algorithm and produces constant rate bit stream no matter what bandwidth is allocated or when the scene change occurs. Besides, the objective quality [in peak signal-to-noise ratio (PSNR)] of the proposed strategy is 1.5 dB more than that of TM5 and is almost the same as the results coded without buffer control. In addition, it always holds the smooth property.
ISSN:1051-8215
1558-2205
DOI:10.1109/76.644072