基于移动终端的视频实时传输关键技术研究  

Research on Key Technologies of real time video transmission based on mobile terminal

作　　者：曹鹏飞 崔永艳 

机构地区：[1]南京南瑞集团公司,江苏南京211000

出　　处：《自动化与仪器仪表》2016年第12期195-197,共3页Automation & Instrumentation

基　　金：基金项目:基于移动应用平台的设备状态数据流录入技术研究与试点应用

摘　　要：为了解决现有的移动终端视频实时传输上具有的问题,文中针对H.263以及H.264视频编码方式特点,分别提出了与其相适应的封装方法,减少了实时传输协议包的额外浪费,提高了视频的传输效率。实验测试显示,在帧率和分辨率最低时,H.263以及H.264视频编码方式下的峰值信噪比(PSNR)均在30 dB以上,已满足了视频传输的最低要求,而当帧率在24 Hz时,两种编码方式的PSNR均在40 dB以上,视频传输质量理想。此外,两种编码方式下丢包率最大在10%左右,延时最大在400 ms以内,均达到了视频实时传输的要求。In order to solve the problems existing in the real-time transmission of the mobile terminal video,a kind of packaging and packaging mode is proposed in this paper according to the characteristics of H.263 and H.264 video coding mode to adapt to the characteristics of H.263 and H. 264 video stream,which avoids the extra waste of the real time transmission protocol package and improves the transmission efficiency of the video.The experimental test shows that,in the case of the lowest resolution and frame rate,two kinds of encoding PSNR were more than 30 d B,has reached the standard of video transmission,and when the frame rate at 24 Hz,two kinds of two kinds of encoding PSNR were more than 40 d B,the quality of video transmission is ideal. In addition,under the two coding method,the packet loss rate is about 10%,the maximum delay time is less than 400 ms,which can achieve the requirements of real-time video transmission.

关 键 词：移动终端 视频实时传输 H.263 H.264 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]