网络环境的构建方式对信号传输的有效性和稳定性具有较大影响.为了准确监测和分析基于网际互连协议(Internet Protocol,IP)网络传输的 4K超高清视频质量,设计一个 4K超高清视频IP网络传输系统方案.该方案能够针对 4K超高清视频信号在IP网络传输中存在的丢包、延时等情况进行监测和分析,进而确定影响 4K超高清视频传输的网络服务质量(Quality of Service,QoS)参数.仿真实验结果显示,网络丢包现象会对视频信号的质量平均得分(Mean Opinion Score,MOS)数值产生显著影响,尤其当丢包发生在I帧时,4K超高清视频质量下降尤为严重.
Monitoring and Analysis of 4K Ultra High Definition Video Quality for IP Network Transmission
The construction mode of network environment has great influence on the effectiveness and stability of signal transmission.In order to accurately monitor and analyze 4K ultra high definition video quality based on Internet Protocol(IP)network transmission,a 4K ultra high definition video IP network transmission system scheme is designed.The solution can monitor and analyze the packet loss and delay of 4K ultra high definition video signal in IP network transmission,and then determine the Quality of Service(QoS)parameters affecting 4K ultra high definition video transmission.The simulation results show that network packet loss has a significant impact on the Mean Opinion Score(MOS)of the video signal,especially when packet loss occurs at I-frame,the quality of 4K ultra high definition video is particularly degraded.
4Ktransmission systemQuality of Service(QoS)Mean Opinion Score(MOS)
NETL
NSTL
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