基于RTP的机载网络视频实时监控系统设计  

Design of Real-time Monitoring System of Airborne Net Videos Based on RTP

作　　者：郝朝[1] 王灏 HAO Zhao;WANG Hao(Chinese Flight Test Establishment,Xi’an 710089,China)

机构地区：[1]中国飞行试验研究院,陕西西安710089

出　　处：《计算机技术与发展》2019年第5期131-134,共4页Computer Technology and Development

基　　金：国家国防科技工业局国防基础科研计划重点项目(JCKY2016205B006)

摘　　要：在飞行试验中,视频实时监控是保障试飞安全和提高试飞效率的重要环节。为了解决某型机机载网络视频的实时监控问题,提出了基于RTP/RTCP协议的机载网络视频实时解析系统设计方案。通过UDP组播协议接收网络电台发送的RTP/RTCP数据包,经过解包,拼成完整的一帧视频图像,采用FFmpeg进行视频解码并利用SDL进行显示。首先介绍了遥测网络视频实时监控系统架构,重点介绍了RTP/RTCP协议及解包方法,然后论述了视频解码与显示流程、YUV图像处理算法。软件采用模块化、多线程并发和多缓冲区设计思路,提高处理效率,保证网络视频监控的实时性和功能的可扩展性。目前该软件已成功应用于某型号任务视频实时监控中。实际应用效果表明,视频播放效果清晰流畅,该软件具有良好的实时性、可靠性和人机交互功能,有效保证了试飞安全。In flight test,video real-time monitoring is an important part to ensure flight safety and improve the efficiency of flight test.In order to solve the real-time monitoring problem of airborne network video of a certain type of aircraft,we propose a design scheme of airborne network video real-time resolution system based on RTP/RTCP.The RTP/RTCP packets sent by network radio are received by UDP multicast protocol,and the complete one frame video image is combined through unpacking,and the video is decoded with FFmpeg and SDL is used to display it.Firstly,the architecture of video real-time monitoring system for telemetry network video is introduced.The RTP/RTCP and the method of unwrapping are introduced.Then the video decoding and display process and the algorithm of YUV image processing are discussed.The software adopts the modular,multithread concurrent and multi buffer design to improve the processing efficiency and ensure the real-time and functional scalability of the network video monitoring.At present,the software has been successfully applied to real-time video monitoring of a certain type mission.The practical application results show that the video play is clear and fluent and the software has a better real-time,reliability and human-computer interaction which can ensure the safety of test flight effectively.

关 键 词：RTP/RTCP 机载网络视频 FFMPEG SDL 多线程 实时监控 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]