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In this paper, a frame level rate control algorithm is proposed with a novel Rate-Quantization (R-Q) model for H.264/AVC. Firstly, a two-stage rate control scheme is adopted to decouple the inter-dependency between Rate Distortion Optimization (RDO) and rate control. Secondly, in order to predict the frame complexity accurately, instead of the Mean Absolute Difference (MAD) of the residual signal,...
This paper presents a novel rate-distortion (R-D) joint optimization rate control (RC) algorithm for H.264 encoding. For RC in H.264, one of the most important topics is to model the R-D characteristics accurately. To achieve this, an efficient linear model is proposed to model the distortion-quantization (D-Q) relation. With the proposed linear D-Q model, a closed-form solution is derived to calculate...
This paper presents a novel efficient algorithm to reduce redundant DCT and quantization computations for H.264 encoding. A theoretical analysis is performed to study the sufficient condition for DCT coefficients to be quantized to zeros in H.264. As a result, a more tight sufficient condition is derived to early detect all-zero 4x4 DCT blocks. Compared with other algorithms, the proposed algorithm...
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