基于B/S架构实时高清音视频监控系统
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摘要
高清视频监控画面范围广同时产生巨大数据使得在网络传输中造成时延,也存在音频数据有限的问题。针对上述问题,文中设计一种基于B/S架构的实时高清音视频监控系统。USB摄像头基于V4L2接口采集图像,基于ALSA声卡驱动采集音频,结合H.265视频编解码技术和FAAC音频编码技术,以RTP协议打包封装H.265视频码流和AAC音频码流经网络同步传输到Web服务器,利用CGI,JavaScrict技术实现多种智能终端登录浏览器显示监控画面。经测试该监控系统画面清晰无抖动,音视频吻合效果明显满足实验要求。
The high-definition video monitoring images have wide application range,but can simultaneously generate huge amount of data,which may cause the problems of network transmission delay and limited audio data. Therefore,a real-time highdefinition audio and video monitoring system based on the B/S architecture is designed in this paper. The USB camera is used to collect images by means of the V4 L2 interface and audios by means of the ALSA sound card driver. In combination with the H.265 video encoding and decoding technology and FAAC audio encoding technology,the H.265 video code stream and AAC audio code stream are packaged and encapsulated by using the RTP protocol,and then simultaneously transmitted to the Web server via network. The CGI and JavaScript technology are used to realize various intelligent terminals′ login into browser for monitoring image display. The test results show that the monitoring system can generate clear images without any jitter,and has an obvious audio and video synchronization effect,which can meet the experimental requirements.
The high-definition video monitoring images have wide application range,but can simultaneously generate huge amount of data,which may cause the problems of network transmission delay and limited audio data. Therefore,a real-time highdefinition audio and video monitoring system based on the B/S architecture is designed in this paper. The USB camera is used to collect images by means of the V4 L2 interface and audios by means of the ALSA sound card driver. In combination with the H.265 video encoding and decoding technology and FAAC audio encoding technology,the H.265 video code stream and AAC audio code stream are packaged and encapsulated by using the RTP protocol,and then simultaneously transmitted to the Web server via network. The CGI and JavaScript technology are used to realize various intelligent terminals′ login into browser for monitoring image display. The test results show that the monitoring system can generate clear images without any jitter,and has an obvious audio and video synchronization effect,which can meet the experimental requirements.
引文
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[2]陈晓伟,孟利民.基于B/S架构的视频监控音视频模块的设计[J].电声技术,2014,38(6):77-80.CHEN Xiaowei,MENG Limin. Design of client software of the video monitor based on B/S structure[J]. Audio engineering,2014,38(6):77-80.
[3]廖志川,俞子荣,陈黎娟.基于ARM的移动视频监控终端设计与实现[J].现代电子技术,2012,35(10):9-11.LIAO Zhichuan,YU Zirong,CHEN Lijuan. Design of mobile video monitoring terminal based on ARM[J]. Modern electronics technique,2012,35(10):9-11.
[4]史凯,雒江涛,张治中.基于RTP的H.264无线视频传输和QoS控制[J].微计算机信息,2009,25(6):162-164.SHI Kai,LUO Jiangtao,ZHANG Zhizhong. Transmission of H. 264 video over wireless networks based on RTP and QoS control[J]. Microcomputer information,2009,25(6):162-164.
[5]戎玲,游寒旭.数字视频对讲系统的全程唇音同步测试方法[J].电视技术,2017,41(6):143-146.RONG Ling,YOU Hanxu. Lip sync test method for IP video intercom system[J]. Video engineering,2017,41(6):143-146.
[6]王开宇.基于C#的数据与视频监控系统上位机软件设计[J].现代电子技术,2017,40(10):62-64.WANG Kaiyu. Design of C#-based PC software for data and video monitoring[J]. Modern electronics technique,2017,40(10):62-64.
[7]陈岚,鲍可进.基于S3C6410和3G的无线视频传输系统的设计与实现[J].无线通信技术,2014,23(2):42-46.CHEN Lan,BAO Kejin. Design and implementation of wireless video transmission system based on S3C6410 and 3G[J].Wireless communication technology,2014,23(2):42-46.
[8]王莉,周伟.基于ARM的嵌入式Web服务器设计[J].计算机工程与应用,2012,48(14):90-93.WANG Li,ZHOU Wei. Design of embedded Web server based on ARM[J]. Computer engineering and applications,2012,48(14):90-93.
[9]许刚.基于ARM11的嵌入式视频采集监控系统设计[J].测控技术,2013,32(12):37-40.XU Gang. Design of an embedded video capturing system based on ARM11[J]. Measurement&control technology,2013,32(12):37-40.
[10]胡江涛.安防工程中音视频监控系统的优势与应用[J].自动化与仪器仪表,2017(8):131-132.HU Jiangtao. Advantages and applications of audio video surveillance system in security engineering[J]. Automation&instrumentation,2017(8):131-132.