A Frame-Level HEVC Rate Control Algorithm for Videos with Complex Scene over Wireless Network

In this paper, we propose a novel frame-level rate control algorithm for videos with complex scene in High Efficiency Video Coding(HEVC). To achieve a constant bitrate output and reduce the mismatch ratio of bitrate for time varying wireless links, the relationship of content complexity, QP and bitrate is utilized to adjust bit allocation for each GOP and frame via linear extrapolation. In addition, hierarchical frame structure is also considered to optimize QP selection. Experimental results show that compared with the latest rate control algorithm in JCTVC-K0103, our proposed algorithm can significantly improve the bitrate accurate at comparable coding performance in terms of constant quality and average PSNR, especially for videos with complex scene.