西南科技大学硕士研究生学位论文 第l页
摘 要
随着网络技术和视频编解码技术的发展,实时视频已广泛应用于各个领域。, 为实时视频应用带来新的体验,该标准已广泛应用于媒体存储、网络传输等领域,但该标准实现复杂度较高,限制了其在低成本,嵌入式领域的应用。
论文针对网络直播教学需要,依托新的硬件编解码技术的发展,致力 。在对比常用带硬件编解码功能芯片基础上,考虑成本和性能,, 移植了嵌入式Linux操作系统,搭建了实时视频应用开发软件系统。该系统通过ov9650图像传感器实时采集数据,,在软件设计方面,开发了基于V4L2的视频采集模块,通过libVPU编解码库,开发了视频压缩模块,实现单路视频的 ,在传输方面,采用基于UDP协议的实时传输协议进行网络传输。在接收端PC机上,采用GStreamer进行解码和显示。
GStreamer作为优秀的开源多媒体框架,其基于管道和插件的机制简化了多媒体应用程序的开发和设计。在研究插件开发基础上,开发了视频采集插件和视频编码插件,方便了应用程序的开发和集成。
关键词: RTP实时视频GStreamer
西南科技大学硕士研究生学位论文 第1l页
Abstract
With the development work technology and video codec technology, video have been widely used in various latest video codec standard can further reduce the bitrate and enhanced video quality, bring a new experience for video applications,the standard has been widely used in the field of media work transmission, the high plexity of the standard limits its application in ,embedded field.
The thesis,based on the needs of webcast teaching and the development of new hardware codec technology,mitted to the research and development of general of monly used chips with hardware codec capabilities,taking into account the cost and performance,we choose the multimedia processor—based hardware platform,port
embedded Linux operating system,built a real—time video application software development system captures video stream through OV9650 image sensor,encoded the stream with hardware codec module in and transport
the through the Transport software design,we developed the video capturing module based on V4L2 framework,the codec module on the top of libVPU library and a simply implemented I盯P module for
a single channel real-time video stream system integreted pression and the
基于i.mx27的实时视频技术研究与开发based on i.m x27 real-time video technology research and development 来自淘豆网www.taodocs.com转载请标明出处.