本文以DirectShow技术为基础，通过对媒体文件或多媒体

流中的视频流的处理，从多媒体文件视频流中捕获视频帧图

像，提取出所需要的最好、最有价值的图像帧信息。利用

DirectShow技术从视频流中捕获帧图像，捕获精度可达到l帧。-In this paper, DirectShow technology-based, through the media file or multimedia stream video stream processing, multimedia files from the video stream captured video frame images extracted need the best, the most valuable information on the image frame. Use DirectShow technology to capture frames from the video stream image capture accuracy can reach l-frame.