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In the information age , network, and application of digital information is increasingly in - depth and wide range of multimedia technology in a very important position . Increasingly high demand of multimedia technology , not only to hear each other's voices , but also want to see the other side of the image , such as video telephony , video conferencing , real-time monitoring system , video capture technology has become an important part of a key precondition for such applications . Windows offers a variety of video capture technology , mainly in MCI ( Media Control Interface ) developed Video for Windows technology and DirectShow technology . In this paper , the first major study of Video for Windows technology architecture and implementation mechanism of the its functional modules AVICap class video capture , and the use of its technology gives video capture workflow and key steps . Based on the above-mentioned study , the analysis of the this capture technology advantages and disadvantages . Then focus on DirectShow technology of COM-based architecture , and a detailed analysis of the mechanism of WDM ( Windows DriverModel ) DirectShow video capture architecture to understand DirectShow DirectShow on the principle of hardware support , to analyze the technological advantages . Finally, in DirectShow filter connected between process based on the analysis , the use of VC development tools , a video capture tool for Windows operating system , designed to support different interfaces or different drive model video equipment to achieve a real - time video data capture , preview , and compressed storage capabilities .
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