Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (2): 103-107.doi: 10.1016/S1005-8885(08)60212-5

• Wireless • Previous Articles     Next Articles

Efficient rate control scheme for low bit rate H.264/AVC video coding

LI Zhi-cheng, LIU Tao, ZHANG Yong-jun, GU Wan-yi   

  1. Key Laboratory of Optical Communication and Lightwave Technologies, Ministry of Education,
    Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-04-30
  • Contact: LI Zhi-cheng

Abstract:

This article presents an efficient rate control scheme for H.264/AVC video coding in low bit rate environment. In the proposed scheme, an improved rate-distortion (RD) model by both analytical and empirical approaches is developed. It involves an enhanced mean absolute difference estimating method and a more rate-robust distortion model. Based on this RD model, an efficient macroblock-layer rate control scheme for H.264/AVC video coding is proposed. Experimental results show that this model encodes video sequences with higher peak signal-to-noise ratio gains and generates bit stream closer to the target rate.

Key words:

H.264/AVC;rate control;RD optimization