摘要： 提出一个基于DirectShow技术实时视频流捕捉及压缩的实现方案。该方案中视频捕捉采用WDM(视窗驱动模式)捕捉方式,提高了视频捕捉的效率和通用性;采用基于内容的MPEG-4视频编码标准对视频流进行压缩,得到了较高的压缩比和压缩质量。阐述了DirectShow的技术结构及基于DirectShow视频捕捉及压缩的实现过程。

关键词: DirectShow, 视窗驱动模式, MPEG-4

Abstract: An implementation of the video captures and encoding based on DirectShow technology is put forward in the paper. It adopts WDM ( Windows driver model) as the video capture method, which can enhance the efficiency and generality of the video capture. It utilizes MPEG-4, one of the video coding standards based on content, to encode the video stream, which can result in higher encoding rate and better encoding quality. This paper introduces the architecture of DirectShow technology, and shows the procedure of realization of the video captures and encoding based on DirectShow.

中图分类号: 

• TP391.4