Real-time motion-based H.263+ frame rate control

Hwangjun Song; JongWon Kim; C.-C. Jay Kuo

doi:10.1117/12.334669

28 December 1998 Real-time motion-based H.263+ frame rate control

Hwangjun Song, JongWon Kim, C.-C. Jay Kuo

Author Affiliations +

Proceedings Volume 3653, Visual Communications and Image Processing '99; (1998) https://doi.org/10.1117/12.334669
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

Most existing H.263+ rate control algorithms, e.g. the one adopted in the test model of the near-term (TMN8), focus on the macroblock layer rate control and low latency under the assumptions of with a constant frame rate and through a constant bit rate (CBR) channel. These algorithms do not accommodate the transmission bandwidth fluctuation efficiently, and the resulting video quality can be degraded. In this work, we propose a new H.263+ rate control scheme which supports the variable bit rate (VBR) channel through the adjustment of the encoding frame rate and quantization parameter. A fast algorithm for the encoding frame rate control based on the inherent motion information within a sliding window in the underlying video is developed to efficiently pursue a good tradeoff between spatial and temporal quality. The proposed rate control algorithm also takes the time-varying bandwidth characteristic of the Internet into account and is able to accommodate the change accordingly. Experimental results are provided to demonstrate the superior performance of the proposed scheme.

Citation Download Citation

Hwangjun Song, JongWon Kim, and C.-C. Jay Kuo "Real-time motion-based H.263+ frame rate control", Proc. SPIE 3653, Visual Communications and Image Processing '99, (28 December 1998); https://doi.org/10.1117/12.334669

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