A Segment Constraint ABR Algorithm for HEVC Encoder

In this paper, a segment constraint ABR algorithm for HEVC based on x265 platform is proposed for the practical situation when the video needs to be transmitted through network with bitrate stability for each segment. Default ABR algorithm in x265 and R-y model are integrated and a segment-based rate control scheme is developed. The proposed algorithm can achieve an average of 46 % segment bitrate fluctuation reduction with tolerable increase in encoding time and negligible changes in PSNR and QP.