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• Running ffmpeg.exe through windows service fails to complete while dealing with large files

  28 avril 2013, par Harun

  I am using ffmpeg.exe to convert video files to flv format. For that purpose i use a windows service to run the conversion process in background. While trying to convert large files(i experienced it when the file size is >14MB) through windows service it gets stuck at the line which starts the process(ie, process.start();).

  But when i tried to execute ffmpeg.exe directly from command prompt it worked with out any problems.

  My code in windows service is as follows :

  private Thread WorkerThread; 
  
  protected override void OnStart(string[] args)
  
  { 
  
  
  
     WorkerThread = new Thread(new ThreadStart(StartHandlingVideo));
  
     WorkerThread.Start();
  
  }
  
  
  
  protected override void OnStop()
  
  { 
  
     WorkerThread.Abort();
  
  }
  
  
  
  private void StartHandlingVideo()
  
  {   
  
     FilArgs = string.Format("-i {0} -ar 22050 -qscale 1 {1}", InputFile, OutputFile);
  
     Process proc;
  
     proc = new Process();
  
  
  
     try
  
     {
  
  
  
       proc.StartInfo.FileName = spath + "\\ffmpeg\\ffmpeg.exe";
  
       proc.StartInfo.Arguments = FilArgs;
  
       proc.StartInfo.UseShellExecute = false;
  
       proc.StartInfo.CreateNoWindow = false;
  
       proc.StartInfo.RedirectStandardOutput = true;
  
       proc.StartInfo.RedirectStandardError = true;
  
  
  
       eventLog1.WriteEntry("Going to start process of convertion");
  
  
  
       proc.Start();
  
  
  
       string StdOutVideo = proc.StandardOutput.ReadToEnd();
  
       string StdErrVideo = proc.StandardError.ReadToEnd();
  
  
  
       eventLog1.WriteEntry("Convertion Successful");
  
       eventLog1.WriteEntry(StdErrVideo);               
  
   }
  
   catch (Exception ex)
  
   {
  
       eventLog1.WriteEntry("Convertion Failed");
  
       eventLog1.WriteEntry(ex.ToString());            
  
   }
  
   finally
  
   {
  
       proc.WaitForExit();
  
       proc.Close();
  
   }

  How can I get rid of this situation.

• How to run FFMPEG at my web host server

  26 avril 2013, par user1978421

  I want to perform some video process at my web host server. I don't think the web host server will allow me to execute an exe file for security reasons.

  Should I use SharpFFMpeg ?

  I have downloaded SharpFFMpeg. But it's lacking a proper documentation.

  Can someone give one example how to perform a conversion from one video format to another ?

  I have written my execution program, but the compiler says it cannot file the file specified. What's wrong with it ?

          string command = @"D:\Recorded TV\ffmpeg.exe -i ""Australia's Toughest Police_QUEST_2013_04_17_21_57_00.wtv"" -s 800x400 throughCS.mp4";
  
          try
  
          {
  
              ProcessStartInfo psi = new ProcessStartInfo("\"" + command + "\"");
  
              psi.RedirectStandardOutput = true;
  
              psi.UseShellExecute = false;
  
              psi.CreateNoWindow = true;
  
              Process proc = new Process();
  
              proc.StartInfo = psi;
  
              proc.Start();
  
              string result = proc.StandardOutput.ReadToEnd();
  
              tb1.Text = result;
  
              Debug.WriteLine(result);
  
          }

• video File conversion from any fromat to webm in windows using ffmpeg command line

  23 janvier 2014, par user3217695

  As i need to convert the video from any format which is uploaded to WEBM, since i am using video tag to play videos in browsers the code which i am using works fine for mp4 conversion but it doesn't for the WEBM format file. so please find me a solution

  ffmpeg -i INPUT_FILE -y -ar 22050 -ab 512 -b 800k -f webm -s 514*362 OUTPUT_FILE.WEBM

  Thanks.