主题：这样的图标是如何实现的？

 呃，操作系统的预览功能，就是截取视频的某一图片

 mark 视频截图

 

 用下面的代码，加上一个ffmepg.exe即可截图，具体看网址介绍 http://www.ddooo.com/softdown/17938.htm

 

Dim vFileName As String = "d:\test.flv"
Dim flv_img As String = ProjectPath & "test.jpg"

Dim FlvImgSize As String = "240x180"
Dim ffmpeg As String = ProjectPath & "ffmpeg.exe"
Dim startInfo As new System.Diagnostics.ProcessStartInfo(ffmpeg)

startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden

startInfo.Arguments = " -i """ & vFileName & """ -r 1 -ss 00:00:15 -t 00:00:01 -s " & FlvImgSize & " """ & flv_img & """"

System.Diagnostics.Process.Start(startInfo)