Adaptive frame layer rate control for H.264
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 2
Low-delay rate control for real-time H.264/AVC video coding
IEEE Transactions on Multimedia
On enhancing H.264/AVC video rate control by PSNR-based frame complexity estimation
IEEE Transactions on Consumer Electronics
Rate control in DCT video coding for low-delay communications
IEEE Transactions on Circuits and Systems for Video Technology
Overview of the H.264/AVC video coding standard
IEEE Transactions on Circuits and Systems for Video Technology
Rate-constrained coder control and comparison of video coding standards
IEEE Transactions on Circuits and Systems for Video Technology
On Lagrange multiplier and quantizer adjustment for H.264 frame-layer video rate control
IEEE Transactions on Circuits and Systems for Video Technology
Switching frames for constant bit rate video streams
Proceedings of the 5th International ICST Mobile Multimedia Communications Conference
Journal of Signal Processing Systems
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We present an efficient rate control strategy for H.264 in order to maximize the video quality by appropriately determining the quantization parameter (QP) for each macroblock. To break the chicken-and-egg dilemma resulting from QP-dependent rate-distortion optimization (RDO) in H.264, a preanalysis phase is conducted to gain the necessary source information, and then the coarse QP is decided for rate-distortion (RD) estimation. After motion estimation, we further refine the QP of each mode using the obtained actual standard deviation of motion-compensated residues. In the encoding process, RDO only performs once for each macroblock, thus one-pass, while QP determination is conducted twice. Therefore, the increase of computational complexity is small compared to that of the JM 9.3 software. Experimental results indicate that our rate control scheme with two-step QP determination but single-pass encoding not only effectively improves the average PSNR but also controls the target bit rates well.