1 public void RunFFmpeg()
 2 
 3         {
 4 
 5             Process[] KillProcessArray = Process.GetProcessesByName("ffmpeg");
 6 
 7             Debug.WriteLine(KillProcessArray.Length.ToString());
 8 
 9             foreach (var KillProcess in KillProcessArray)
10 
11             {
12 
13                 KillProcess.Kill();
14 
15             }
16 
17             Process p = new Process();//建立外部调用线程
18 
19             p.StartInfo.FileName = @"E:\ffmpeg\ffmpeg.exe";   //ffmpeg.exe的绝对路径
20 
21             p.StartInfo.Arguments = @"-f dshow -i video=""screen-capture-recorder"" -r 15 -vcodec libx264 -preset:v ultrafast -tune:v zerolatency D:\MyDesktop.mkv";  //ffmpeg的参数
22 
23             p.StartInfo.UseShellExecute = false;           //是否使用操作系统shell启动
24 
25             p.StartInfo.RedirectStandardError = true;      //重定向标准错误输出
26 
27             p.StartInfo.CreateNoWindow = true;             //不显示程序窗口
28 
29             p.ErrorDataReceived += new DataReceivedEventHandler(Output);
30 
31             p.Start();
32 
33             myProcessId = p.Id;                            //获取关联进程的唯一标识符
34 
35             p.BeginErrorReadLine();
36 
37         }
38 
39         public void StopFFmpeg()
40 
41         {
42 
43             Process myProcess = Process.GetProcessById(myProcessId);  //通过ID关联进程
44 
45             myProcess.Kill();
46 
47         }
48 
49         private void Output(object sendProcess,DataReceivedEventArgs output)
50 
51         {
52 
53             if (!String.IsNullOrEmpty(output.Data))
54 
55                 Debug.WriteLine(output.Data.ToString());
56 
57         }
58 
59         static void Main(string[] args)
60 
61         {
62 
63             CmdHelper ch = new CmdHelper();
64 
65             ch.RunFFmpeg();
66 
67             Console.WriteLine("Hello");
68 
69             Thread.Sleep(10000);
70 
71             Console.WriteLine("10s passed");
72 
73             ch.StopFFmpeg();
74 
75         }