A rate control scheme for H.264 video under low bandwidth channel
YIN Ming, WANG Hong-yuan
Department of Electronics and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; College of Automation Engineering, Guangdong University of Technology, Guangzhou 510090, China
Abstract The dilemma of the quantization parameter (QP) being involved in both rate control and rate-distortion optimization (RDO) prevents using the traditional rate control scheme. Although some rate control schemes are proposed to circumvent the dilemma, the inaccurate prediction model and improper bit allocation deter H.264 application on low bandwidth channel. To resolve this issue, this paper proposes a novel rate control scheme by considering the macroblock (MB) encoding complexity variation and buffer variation and by exploiting the spatio-temporal correlation sufficiently well. Simulations showed that this scheme improves the perceptual quality of the pictures with similar or smaller PSNR deviations when compared to that of rate control in JVT-O016.
YIN Ming, WANG Hong-yuan. A rate control scheme for H.264 video under low bandwidth channel. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2006, 7(6 ): 9-.
