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.
This paper is supported by China Postdoctoral Science Foundation (No.20100471837 ) and Natural Science Basic Research Plan in ShaanXi Province (No.2010JM8037).
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Su, L., Guo, Y., Wang, M., Fan, C., Huo, W. (2012). An Improved Method for Initializing Quantization Parameter in H.264 Rate Control. In: Zhang, Y., Zhou, ZH., Zhang, C., Li, Y. (eds) Intelligent Science and Intelligent Data Engineering. IScIDE 2011. Lecture Notes in Computer Science, vol 7202. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31919-8_94
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DOI: https://doi.org/10.1007/978-3-642-31919-8_94
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-31918-1
Online ISBN: 978-3-642-31919-8
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