ffmpeg视频转码

   
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;    //执行参数
                p.StartInfo.UseShellExecute = false;  ////不使用系统外壳程序启动进程
                p.StartInfo.CreateNoWindow = true;  //不显示dos程序窗口
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.RedirectStandardOutput = true;
                p.StartInfo.RedirectStandardError = true;//把外部程序错误输出写到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();//开始异步读取
                p.WaitForExit();//阻塞等待进程结束

                p.Close();//关闭进程

                p.Dispose();//释放资源
                return "";
            }
            catch (Exception ex)
            {
                RBILogs.WriteLog("error", ex.ToString());
                return ex.ToString();
            }
        }

或：建议用这种
Process procThumb = new Process();
procThumb.StartInfo.CreateNoWindow = true;//不显示dos程序窗口
procThumb.StartInfo.UseShellExecute = false;
procThumb.StartInfo.FileName = path + "ffmpeg.exe";
procThumb.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
procThumb.StartInfo.Arguments = "-rtsp_transport tcp -i \"" + model.RtspUri + "\" -c:a aac -c:v copy -acodec copy -f flv rtmp://" + "127.0.0.1" + ":1935/myapp/room" + model.CameraIp + "_" + model.CameraStream;
//procThumb.WaitForExit();
procThumb.Start();