视频捕获是指由专用的视频采集卡捕获声频和视频信息，然后将其进行数据化处理，再经过软件的压缩进行处理，这时就可对这些数据进行保存、回放、传输等各种操作。 -Video capture, is defined as a dedicated video capture card to capture audio and video information, and then processing the data, another to deal with the compression soft