DirectShow播放视频文件，DexterLib截取图像。

//引用

using DexterLib;
using Microsoft.DirectX.AudioVideoPlayback;

 

//声明

private Video videoPlay = null;
MediaDetClass mdc = new MediaDetClass();

 

//播放视频

videoPlay = new Video(this.txtFile.Text);

videoPlay.Owner = this.pnlVideo;

videoPlay.Play();

videoPlay.Pause();

...

 

 

//截图，GetBitmapBits()方法要在unsafe模式下调用。

mdc.GetBitmapBits(videoPlay.CurrentPosition, ref size, ref *buff, 328, 240);

mdc.WriteBitmapBits(videoPlay.CurrentPosition, 328, 240, i.ToString() + ".bmp");