string path = AppDomain.CurrentDomain.BaseDirectory;
List<VideoModel> list = new List<VideoModel>();
List<VideoResultModel> VideoResultList = new List<VideoResultModel>();
string FFIP = ConfigurationManager.AppSettings["FFIP"].ToString();
string FFport = ConfigurationManager.AppSettings["FFport"].ToString();

private string Test1(VideoModel model)
        {
            try
            {

                Process p = new Process();
                p.StartInfo.FileName = path + "ffmpeg.exe";

                p.StartInfo.UseShellExecute = false;
                //string srcFileName = "";
                //string destFileName = "";
                //srcFileName = "D:\\" + "1.dav";
                //destFileName = "D:\\" + "2.mp4";

                p.StartInfo.Arguments = "-i " + model.OldVideo + " -y  -vcodec h264 -b 500000 " + model.NewVideo;    //執行引數
                p.StartInfo.UseShellExecute = false;  ////不使用系統外殼程式啟動程序
                p.StartInfo.CreateNoWindow = true;  //不顯示dos程式視窗
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.RedirectStandardOutput = true;
                p.StartInfo.RedirectStandardError = true;//把外部程式錯誤輸出寫到StandardError流中
                                                         // p.ErrorDataReceived += new DataReceivedEventHandler(p_ErrorDataReceived);
                                                         // p.OutputDataReceived += new DataReceivedEventHandler(p_OutputDataReceived);
                p.StartInfo.UseShellExecute = false;

                p.Start();

                // p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;

                p.BeginErrorReadLine();//開始非同步讀取
                p.WaitForExit();//阻塞等待程序結束

                p.Close();//關閉程序

                p.Dispose();//釋放資源
                return "";
            }
            catch (Exception ex)
            {
                RBILogs.WriteLog("error", ex.ToString());
                return ex.ToString();
            }
        }