CapScreenAndAudio说明： 用C#实现的录屏软件，录制为AVI格式。获取文件大小及帧数，然后输入开始帧数和结束帧数，单击“分割”按钮，即可分割该视频文件。(CapScreenAndAudioDescr iption: C# implementation of the screen recording software, recorded as AVI format. Get the file size and the number of frames, and then ente