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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.
This article presents an efficient rate control scheme for H.264 / AVC video coding in low bit rate environment. The proposed scheme, an improved rate-distortion (RD) model by both analytical and empirical approaches is developed. Titled 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 generated bit stream closer to the target rate.