基于嵌入式Linux的实时视频通信的实现  

Implementation of Real-time Video Communication Based on Embedded Linux

作　　者：赵宇峰 

机构地区：[1]郑州威科姆科技股份有限公司,河南郑州450001

出　　处：《电视技术》2012年第19期189-192,共4页Video Engineering

摘　　要：以海思HI3716C为硬件平台,提出了一种在此平台之上实现实时视频通信的方法。该平台以嵌入式Linux为操作系统,采用yaffs2文件系统。视频数据采集设备使用USB摄像头,从USB摄像头捕获视频数据的功能通过V4L2编程接口来实现。HI3716C平台支持H.264,H.263和MPEG-4编码格式,利用SDK中提供的视频编码API对捕获到的视频数据进行压缩编码。因实时视频传输对实时性要求高而对数据完整性要求低的特点,采用UDP协议作为传输协议。In this paper, a method realized real-time video communication on HI3716C is proposed. Embedded Linux is chosen as operating system, and choose yaffs2 as file system on this platform. USB camera, from which video data is captured by V4I_2 interface,is used as video data acquisition equipment. HI3716C supports three kinds of video compression method, such as H. 264, H. 263 and MPEG--4. The API of video coding, by which video data is compressed, is provided in SDK. Because its high requirement of real-time characteristic but low requirement of integrity characteristic for realtime video transmission, UDP is adopted as the transporting protocol.

关 键 词：嵌入式LINUX V4L2 视频通信 

分 类 号：TN919.8[电子电信—通信与信息系统]