基于H.265的低延迟优化策略研究  

Research on Low Delay Optimization Strategy Based on H.265

作　　者：洪宇光 叶兴扬 潘丽浓 余维栋 

机构地区：[1]宁波海关技术中心,浙江 宁波 [2]杭州电子科技大学电子信息学院,浙江 杭州 [3]慈溪市质量技术监督检验检测服务中心,浙江 慈溪

出　　处：《计算机科学与应用》2022年第6期1641-1657,共17页Computer Science and Application

摘　　要：在有限的网络带宽下,传统的视频采集设备面临压缩率不足、帧率低、延迟高等技术瓶颈,这使得它们无法应用于超清图像的传输场景。因此,面对不断提升的视频质量,提高视频传输系统的编解码效率、降低传输延迟显得尤为重要。本文通过多种低延迟策略对视频传输系统整体延迟时间进行优化,测试结果表明:局域网内,在满足编码质量的前提下,对1080 P质量的视频进行传输,系统端到端的网络传输延迟时间为127 ms。与优化前的视频传输系统相比,优化后的视频传输系统总延迟时间减少了9.48%。Under the limited network bandwidth, the traditional video acquisition equipment is faced with the technical bottleneck of insufficient compression rate, low frame rate and high delay, which makes it impossible for them to be applied in the ultra HD image transmission scene. Therefore, in the face of constantly improving video quality, it is particularly important to improve the codec efficiency and reduce transmission delay of video transmission system. In this paper, the overall delay time of the video transmission system is optimized by a variety of low delay strategies. The test results show that the end-to-end delay time of the system is 127 ms when the 1080 P quality video is transmitted on the premise of satisfying the coding quality. Compared with the video transmission system before optimization, the total delay time of the video transmission system after optimization is reduced by 9.48%.

关 键 词：H.265 视频传输系统 低延时 拥塞控制 

分 类 号：TN919.8[电子电信—通信与信息系统]