An Optimized Rate Control Algorithm for H.264

doi:10.13190/jbupt.200801.88.063

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (1): 88-91.doi: 10.13190/jbupt.200801.88.063

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An Optimized Rate Control Algorithm for H.264

WANG Li-feng1,2, MA Jian1,3, WANG Wen-dong1, FENG Hua-min2, WANG Kong-qiao3,XIAO Chen4

1. School of Computer Science and Technology, Beijing University of Posts and Telecommunications, Beijing 100876;
2.Department of Electronic and Information Engineering, Beijing Electronic Science and Technology Institute, Beijing 100070;
3. Nokia research center, Beijing 100013; 4. School of Computer Science and Technology, Beijing Hang University, Beijing 100083

Received:2007-02-06 Revised:1900-01-01 Online:2008-02-28 Published:2008-02-28
Contact: WANG Li-feng

Abstract

Abstract:

An initial quantity parameter (QP) prejudgment (IQPP) algorithm that can predict the initial QP precisely is proposed based on statistics of encoded frames and frame complexity eigenvalue of I frame. Experimental results show that IQPP algorithm will greatly enhance the performance of rate control and rate-distortion optimization (RDO). The average peak signal-to-noise ratio (PSNR) will be improved compared to traditional method and a constant picture quality has been achieved at low bit rates.

Key words: video encoder, rate control, H.264, quantity parameter, rate-distortion optimization

CLC Number:

TN919.8

WANG Li-feng1,2, MA Jian1,3, WANG Wen-dong1, FENG Hua-min2, WANG Kong-qiao3,XIAO Chen4. An Optimized Rate Control Algorithm for H.264[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(1): 88-91.

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An Optimized Rate Control Algorithm for H.264

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