实现摄像头的视频采集，声卡的声音采集，合成AVI文件，支持AGP/PCI/USB等各种接口的采集卡，支持数码摄像机输入，实现即时抓图，边预览边采集，支持热插拔等等。-achieve video camera collection, the voices sound card collection, synthesis AVI file, support AGP / PCI / USB interface such as the acquisition card to support the im