Low delay rate control for HEVC


This paper presents a rate control scheme for low delay video communication of the High Efficiency Video Coding (HEVC) standard. To prevent the buffer overflow and underflow under small buffer size constraint in low delay communication, the state-of-the-art R-λ algorithm is improved for more accurate bit allocation. A new bit allocation method based on the buffer status is proposed to control the buffer better, which is very important in low delay applications. Experimental results show that compared with the original R-λ algorithm, the proposed scheme has a smaller bit fluctuation and can avoid buffer overflow and underflow with a smaller buffer size, which often means a lower delay, and the PSNR degradation is negligible.

2014 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting
Li Song
Li Song
Professor, IEEE Senior Member

Professor, Doctoral Supervisor, the Deputy Director of the Institute of Image Communication and Network Engineering of Shanghai Jiao Tong University, the Double-Appointed Professor of the Institute of Artificial Intelligence and the Collaborative Innovation Center of Future Media Network, the Deputy Secretary-General of the China Video User Experience Alliance and head of the standards group.