第一步：dll引用
Microsoft.DirectX.dll
Microsoft.DirectX.AudioVideoPlayback.dll
如果没有的话，可能需要安装微软的DRECTX JDK
directx支持的视频文件格式： (*.avi; *.mov; *.mpg; *.mpeg; *.ts; *.wmv; *.vob; *.dat; *.rm; *.rmvb; *.flv)|*.avi; *.mov; *.mpg; *.mpeg; *.ts; *.wmv; *.vob; *.dat; *.rm; *.rmvb; *.flv";
第二步：开发代码
ourVideo = new Video(fileName);//视频文件路径
ourVideo.Ending += new EventHandler(ourVideo_Ending);//注册视频播放完成事件
ourVideo.Owner = this.picPlayWindow;//指定播放媒介pictureBox ourVideo.Play(); duration = ourVideo.Duration;
private Video ourVideo = null;
ourVideo.Stop();
ourVideo.Dispose();
ourVideo.Fullscreen = true;
第三步：设定屏幕拉伸和宽高比
这个的设定是，通过设定pictureBox的大小和位置实现的。
if (common.isFullScreen == true)
{
this.picPlayWindow.Width = players1.Width - ;
this.picPlayWindow.Height = players1.Height - ; this.picPlayWindow.Location = new Point(, );
this.picPlayWindow.Visible = true;
}
else
{
Size ds = ourVideo.DefaultSize; this.picPlayWindow.Width = players1.Width - ;
this.picPlayWindow.Height = players1.Width * ds.Height / ds.Width; int x = ;
int y = players1.Height / - this.picPlayWindow.Height / ;
this.picPlayWindow.Location = new Point(x, y);
this.picPlayWindow.Visible = true;
}