基于嵌入式Linux系统的单个AVI文件视频循环录制的研究

根据某些特殊作业现场对视频监控的要求,对视频文件循环录制在监控中的重要性进行了分析和讨论.针对当前视频文件循环录制中一般所采用的多文件录制存在的问题,提出了一种在嵌入式Linux系统下采用单个AVI文件进行循环录制的方法.在研究中,重点解决了如何写入帧数据和关闭文件以保证数据完整等问题.实验结果表明,采用单个AVI文件进行视频循环录制方法可行,且能很好地解决采用多个文件时的繁琐和前后文件之间视频信息丢失等问题.

Research of Cyclic Recording of a Single AVI File Based on Embedded Linux System

Based on the demand of video surveillance in certain special workplaces,the importance of cyclic recording of video files in the monitoring operation is analyzed and discussed.In view of the serious problems with multi-file recording that is commonly used for the cyclic recording of video files currently,a cyclic recording method based on embedded Linux system,using a single AVI file,is presented.In the research,great importance has been attached to the solution to the problems about how to write frame data and how to close a file to ensure data integrity.The experiments show that ii is feasible to use a single AVI file for cyclic recording of video files and that it can avoid the complexity of multi-file method and the loss of video information in two consecutive files.