A novel R-Q model based rate control scheme in HEVC

High Efficiency Video Coding (HEVC) standard, which has been published as ITU-T H.265-ISO/IEC 23008-2, is the latest video coding standard of the ITU-T and the ISO/IEC. The main goal of the HEVC standardization is to improve the compression performance significantly, about 50% bit rate reduction for equal perceptual video quality, compared to the H.264/AVC standard. For any practically applied video coding standard, rate control is always an integral part. This paper proposed a novel rate-quantization (R-Q) model based rate control scheme to further reduce the bitrate error. The experimental results show that the proposed algorithm has better performance compared with the existing algorithm. The bitrate error of the proposed algorithm is much lower than the existing algorithms, while the Y-PSNR loss is less.