基于ARM11的H.264硬编解码视频传输系统设计

Design of H.264 Hard Codec Video Transmission System Based on ARM11

摘要:

为了解决视频信息冗余、视频传输系统成本较高,视频编解码效率低等缺陷,研究了一种基于H.264硬编解码器的视频传输系统；该系统采用以ARM11为核心的,包含多媒体硬编解码器MFC的S3C6410作为处理器,使用CMOS摄像头采集实时视频数据；在嵌入式Linux操作系统上构建基于live555的RTSP服务器,监听客户端请求；重点阐述了多媒体硬编解码器MFC对视频数据进行的H.264硬件压缩编码,以及数据包的RTP封装,然后经由live555流媒体服务器转发至PC机；最后,在PC上对接收到的数据流进行解码播放,经实验测试证明,系统设计稳定可靠,具有可扩展性强、性能高、成本和功耗低等优点,图像质量和时延满足实际应用需求。

Abstract:

In order to solve the problems such as video information redundancy, high cost of video transmission system, low efficiency of video codec and other defects, a video transmission system based on H.264 hard codec is studied;The system adopts S3C6410 which based on the ARM11 core and includes a multimedia hard codec MFC as the processor, uses CMOS camera to collect real-time data, a live555 RTSP server is built on the embedded Linux operating system to listen to client requests;This paper focuses on the H.264 hardware compression coding of the multimedia hard codec MFC and the RTP encapsulation of the data packet, and then forwards it to the PC via the live555 streaming media server.Finally, the received data stream is decoded on the PC , after testing, the video transmission system is stable and reliable with strong scalability, high performance, low cost, low power consumption and other advantages.it can effectively achieve real-time video transmission, image quality and video delay can meet the application requirements.