C# WinApp ffmpeg ไม่ทราบว่าข้อมูลแบบนี้จะดึงมาใช้ใน progress bar ยังไง ครับ

private void ConvertffmpegItem(string f)
        {
            string file = f;
            string _file = Path.GetDirectoryName(file) + "\\" + Path.GetFileNameWithoutExtension(file) + ".mp4";
            txtStatus.Text = "ConvertffmpegItem:" + f;
            Process process = new Process
            {
                StartInfo =
               {
                   FileName = ffmpeg_file,
                   Arguments = string.Format(ffmpeg_query,file, _file,display),
                   CreateNoWindow = true,
                   WindowStyle =  ProcessWindowStyle.Normal


               },
                EnableRaisingEvents = true
            };

            process.OutputDataReceived += (object sender, DataReceivedEventArgs e) =>
            {
                string consoleLine = e.Data;
                if (!string.IsNullOrWhiteSpace(consoleLine))
                    ParseffmpegProgress(consoleLine);
            };

            process.ErrorDataReceived += (object sender, DataReceivedEventArgs e) =>
            {
                string consoleLine = e.Data;
                if (!string.IsNullOrWhiteSpace(consoleLine))
                    ParseffmpegProgress(consoleLine);

            };


            process.Exited += new EventHandler((object _s, EventArgs _e) =>
            {

                process.Dispose();
                backgroundWorker1.Invoke(new Action(() => backgroundWorker1.Value++));
              

                index++;
                if (index >= dataGridView1.Rows.Count)
                { MessageBox.Show("ConvertMKV All Complete"); return; }

                ConvertMKVItem();
            });
          
            process.Start();


        }


        private void ParseffmpegProgress(string consoleLine)
        {
            // Duration: 00:30:58.39, start: 0.023021, bitrate: 106 kb/s
            // size=     105kB time=00:00:06.69 bitrate= 128.7kbits/s speed=13.4x
            /*
             Past duration 0.995995 too large
            frame=  624 fps= 60 q=28.0 size=    4241kB time=00:00:26.11 bitrate=1330.7kbits/s dup=1 drop=0 speed=2.51x
             */
            Regex extractDuration = new Regex(@"Duration:\s*([0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{2}),\sstart:");

            double Duration=0d;
            Match match = extractDuration.Match(consoleLine);
            txtStatus.Text = "Duration:" + match.Groups[1].Value;
            if (match.Length > 0 && match.Groups.Count >= 1)
            {
                Duration = TimeSpan.Parse(match.Groups[1].Value).TotalSeconds;
                if (Duration == 0d)
                {
                    return;
                }

                Regex extractProgressDuration = new Regex(@"time=([0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{2})\s*bitrate=");
                match = extractProgressDuration.Match(consoleLine);
                if (match.Length > 0 && match.Groups.Count >= 1)
                {

                    dataGridView1.Invoke(new Action(() => dataGridView1[1, index].Value = (int)(70 + TimeSpan.Parse(match.Groups[1].Value).TotalSeconds / Duration * 60)));

                }
            }

          
        }
       

using System;
using System.Diagnostics;
using System.IO;
class Test {
  static void Main(string[] args) {
    Process proc = new Process();
    proc.StartInfo.FileName = "ffmpeg";
    proc.StartInfo.Arguments = "-i " + args[0] + " " + args[1];
    proc.StartInfo.RedirectStandardError = true;
    proc.StartInfo.UseShellExecute = false;
    if (!proc.Start()) {
      Console.WriteLine("Error starting");
      return;
    }
    StreamReader reader = proc.StandardError;
    string line;
    while ((line = reader.ReadLine()) != null) {
      Console.WriteLine(line);
    }
    proc.Close();
  }
}

  private void Form2_Load(object sender, EventArgs e)
        {
            MediaFile mediaFile = new MediaFile(@"j:\test.mkv");

            string strRegex = @"Output #0.*?\n\s{0,}.*?\n\s{0,}.*?\n\s{0,}.*?\n\s{0,}.*?\n\s{0,}.*?\n\s{0,}.*?\n\s{0,}NUMBER_OF_FRAMES.*?:\s{1,}(\d+)\n";
            Regex myRegex = new Regex(strRegex, RegexOptions.None);
            string strRegex_ = @"frame=\s{1,}(\d+)";
            Regex myRegex_ = new Regex(strRegex_, RegexOptions.None);
            long frameAll = 0;

            string ffmpeg_query = "   -i \"{0}\" -s {2}  \"{1}\"";
            string mkvmerge_file = Application.StartupPath + @"\MKVToolNix\mkvmerge.exe";
            string ffmpeg_file = Application.StartupPath + @"\ffmpeg\ffmpeg.exe";
            string str = "";
            Task.Run(() =>
            {

                Process proc = new Process();
                proc.StartInfo.FileName = ffmpeg_file;
                proc.StartInfo.Arguments = string.Format(ffmpeg_query, @"j:\test.mkv", @"j:\test.mp4", "1280x720");
                proc.StartInfo.RedirectStandardError = true;
                proc.StartInfo.UseShellExecute = false;
                proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
                if (!proc.Start())
                {

                    return;
                }
                StreamReader reader = proc.StandardError;
              //  richTextBox1.Invoke(new Action(() => richTextBox1.Text += "\n" + reader.ReadLine()));
                string line = "";
                
             
               while ((line = reader.ReadLine()) != null)
                 {
                    str +="\n"+ line;
                     richTextBox1.Invoke(new Action(() => 
                     { 
                         richTextBox1.Text = line;
                        
                         if (richTextBox1.Text.Contains("frame= "))
                         {
                             if (frameAll <= 0)
                             {
                                 Match match = myRegex.Match(str);
                                 if (match.Length > 0 && match.Groups.Count >= 1)
                                 {
                                     frameAll = long.Parse(match.Groups[1].Value);

                                 }

                             }
                             Match match_ = myRegex_.Match(richTextBox1.Text);
                             if (match_.Length > 0 && match_.Groups.Count >= 1)
                             {
                                 long frame = long.Parse(match_.Groups[1].Value);
                                 if (frame >= 0)
                                 {
                                     this.Invoke(new Action(() => this.Text = "Frame:" + frame + "/" + frameAll  + "  " + (Convert.ToDouble(frame )/ Convert.ToDouble( frameAll)*100d).ToString("0.000")+ " %"));
                                 }

                             }
                         }

                     }));
                   // System.Threading.Thread.Sleep(1000);
                 }
                proc.Close();



            });
           
        }