[1]郝朝,刘升护.基于FFMPEG和SDL的遥测视频解析技术[J].计算机技术与发展,2019,29(04):191-194.[doi:10. 3969 / j. issn. 1673-629X. 2019. 04. 038]
　HAO Zhao,LIU Sheng-hu.Analysis Technology of Telemetry Videos Based on FFMPEG and SDL[J].,2019,29(04):191-194.[doi:10. 3969 / j. issn. 1673-629X. 2019. 04. 038]
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基于FFMPEG和SDL的遥测视频解析技术()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
29
期数:
2019年04期
页码:
191-194
栏目:
应用开发研究
出版日期:
2019-04-10

文章信息/Info

Title:
Analysis Technology of Telemetry Videos Based on FFMPEG and SDL
文章编号:
1673-629X(2019)04-0191-04
作者:
郝朝; 刘升护
中国飞行试验研究院,陕西 西安 710089
Author(s):
HAO Zhao; LIU Sheng-hu
Chinese Flight Test Establishment,Xi’an 710089,China
关键词:
FFMPEG; SDL; 遥测视频; 实时监控
Keywords:
FFMPEG; SDL; telemetry videos; real-time monitoring
分类号:
TP311. 1
DOI:
10. 3969 / j. issn. 1673-629X. 2019. 04. 038
摘要:
在飞行试验中,视频数据是试飞测试数据中的重要组成部分。视频实时监控是保障试飞安全的重要环节。为解决机载多路遥测视频实时监控的问题,提出了基于FFMPEG和SDL的遥测视频实时解析方案。通过UDP组播协议接收PCM遥测视频数据包,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。首先介绍了遥测视频PCM帧格式,重点介绍视频数据包解析方法,然后论述了FFMPEG和SDL对视频流进行解码与显示的流程。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多个型号任务视频实时监控中,实际应用效果表明该软件工作稳定,实现了多路视频图像的解析与显示,能够满足型号试飞需求。
Abstract:
Video data is an important part of flight test data in flight test. Video real-time monitoring is an important part of ensuring flight safety. In order to solve the problem of real-time monitoring of airborne multi-channel telemetry videos,we propose a telemetryreal-time video resolution scheme based on FFMPEG and SDL. The PCM telemetry video packets are received through UDP multicast protocol. After unpacking and frame matching,video is decoded by FFMPEG and displayed by SDL. First the PCM frame format of telemetry video is introduced,focusing on the method of video packet analysis. Then the process of decoding and displaying the video stream by FFMPEG and SDL is discussed. Modularity,multithreading concurrency and multi buffer design are adopted to ensure the real-time performance and scalability of the video monitoring. At present,the software has been successfully applied to the video real-time monitoring of multi type mission. The actual application shows that the software works stably to realize the analysis and display of multichannel video images and meets the requirements of type test flight.

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更新日期/Last Update: 2019-04-10