小货工作室

DirectoryInfo TheFolder = new DirectoryInfo(path_video); //只获取一层，子文件夹没处理
foreach (FileInfo item in TheFolder.GetFiles("*.*")) 
			{
				string name = item.Name;//处理目录下某一文件名
				string fullname = item.FullName;//处理目录下带路径文件名
System.Diagnostics.Process Process1 = new System.Diagnostics.Process();
				Process1.StartInfo.FileName = ffmpeg_address.Text;//调用外部程序名
				Process1.StartInfo.Arguments= @"-i "+fullname+" -ss 2 -offset_x 10 -offset_y 20  -f image2 \""+path_img+"\\"+Path.GetFileNameWithoutExtension(name)+".jpg\" ";//调用程序参数
	        	try
				{
					if (Process1.Start()) //开始进程
					{
						Process1.StandardOutput.ReadToEnd(); //读取输出流释放缓冲,  不加这一句，进程会一直无限等待
						//MessageBox.Show(Process1.StandardOutput.ReadToEnd());
						Process1.WaitForExit();
						//MessageBox.Show("Process finished.");
					}
				}
				catch (Exception ex)
				{
					Debug.Print("Exception !!!"+ex);//万一出错
				}

			}//end foreach

处理文件夹用下面的

DirectoryInfo TheFolder = new DirectoryInfo(path); //只获取一层，子文件夹没处理
		foreach (DirectoryInfo item in TheFolder.GetDirectories()) {
	string name = item.Name;//lv6下某一文件夹名
}