An improved method for initializing quantization parameter in h.264 rate control

Authors:
Linghua Su;Ying Guo;Min Wang;Changzhou Fan;Wenjun Huo
Affiliations:
Telecommunication Engineering Inst., Air Force Engineering Univ., Xi'an, China,Air Force Dalian Communications Sergeant School, Dalian, China;Telecommunication Engineering Inst., Air Force Engineering Univ., Xi'an, China;Telecommunication Engineering Inst., Air Force Engineering Univ., Xi'an, China;Telecommunication Engineering Inst., Air Force Engineering Univ., Xi'an, China;Telecommunication Engineering Inst., Air Force Engineering Univ., Xi'an, China
Venue:
IScIDE'11 Proceedings of the Second Sino-foreign-interchange conference on Intelligent Science and Intelligent Data Engineering
Year:
2011

Citing 3
Cited 0

A novel rate control initialization algorithm for H.264

IEEE Transactions on Consumer Electronics
Improvement on Rate-Distortion Performance of H.264 Rate Control in Low Bit Rate

IEEE Transactions on Circuits and Systems for Video Technology
Rate-Distortion Optimization of Rate Control for H.264 With Adaptive Initial Quantization Parameter Determination

IEEE Transactions on Circuits and Systems for Video Technology

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Abstract

Rate control (RC) plays an important role in video coding and transmission. In this paper, we present a novel rate control initialization algorithm for H.264 by taking image complexity and buffer status into consideration. The first I frame and the first P frame of video sequence are encoded using the algorithm JVT-G012, and the number of target bits for the first frame is corrected. Based on the new R-Q model we propose, the initial quantization parameter is calculated. Experimental results show that the proposed algorithm can increase the average peak signal-to-noise(PSNR) ratio of reconstructed video by 0.86 dB and some skipped frames are avoided.