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• Video streaming from file system

  20 novembre 2019, par shah ghani

  I am trying to make a video server, my scenario is users will upload there files and I have a screen that will play all the files of the day like advertisement that we usually watch in our televisions.

  So far I have achieved .hls and .flv streaming through node media server.

  I have found the best way to stream a file is through FFMPEG, but I am unable to stream multiple files on same output url for example localhost:8000/index.m3u8, Can any one suggest me the right way to stream the next file when FFMPEG ends streaming of a previous file.

  Thanks in advance. :)

  My node media service config

  {
  
    rtmp: {
  
      port: 1935,
  
      chunk_size: 60000,
  
      gop_cache: true,
  
      ping: 30,
  
      ping_timeout: 60
  
    },
  
    http: {
  
      port: 8000,
  
      mediaroot: './media',
  
      allow_origin: '*'
  
    },
  
    trans: {
  
      ffmpeg: 'E:/Red Matrix/node-stream-master/node-stream-master/usr/bin/ffmpeg.exe',
  
      tasks: [
  
        {
  
          app: 'live',
  
          hls: true,
  
          hlsFlags: '[hls_time=2:hls_list_size=3:hls_flags=delete_segments]',
  
          dash: true,
  
          dashFlags: '[f=dash:window_size=3:extra_window_size=5]'
  
        }
  
      ]
  
    }
  
  };

  FFMPEG stream function

  function ffmpegStream(stream){
  
  
  
    var proc = ffmpeg()
  
    .input('D:/Videos/1.MP4')
  
      .on('error', function (err) {
  
        console.log('An error occurred: ' + err.message);
  
      })
  
      .on('end', function (e) {
  
  
  
        console.log('Processing end !' + JSON.stringify(this));
  
  
  
         ffmpegStream('D:/Videos/2.MP4')
  
      })
  
      .on('done', function() {
  
        console.log('Processing finished !');
  
  
  
      })
  
      .save('./media/live/abc/index.m3u8');
  
  }

• The system cannot find the file specified error when trying to execute FFMpeg command with C# (same code works fine in a different app)

  5 mars 2023, par m_kr

  I know there are similar questions to this one. I have gone through every single one I could find and nothing worked for me. Here is my issue :

  


  I am trying to execute a FFMpeg command in command-line through .NET.

  


  Before anything I tried doing it with the following code :

  


  public static string executeCommand(string commandToBeExecuted)
    {
        Process cmd = new Process();
        cmd.StartInfo.FileName = "cmd.exe";
        cmd.StartInfo.RedirectStandardInput = true;
        cmd.StartInfo.RedirectStandardOutput = true;
        cmd.StartInfo.CreateNoWindow = true;
        cmd.StartInfo.UseShellExecute = false;
        cmd.Start();

        cmd.StandardInput.WriteLine(commandToBeExecuted);
        cmd.StandardInput.Flush();
        cmd.StandardInput.Close();
        cmd.WaitForExit();
        return cmd.StandardOutput.ReadToEnd();
    }


  


  Sending the "ffmpeg -h" command in commandToBeExecuted. This did not work.

  


  I next tried the following solution :

  


  public static string ffmpegCommand(string commandToBeExecuted)
    {
        ProcessStartInfo startInfo = new ProcessStartInfo();
        startInfo.CreateNoWindow = false;
        startInfo.UseShellExecute = false;
        startInfo.FileName = "c:\\ffmpeg\\bin\\ffmpeg.exe";
        startInfo.WindowStyle = ProcessWindowStyle.Hidden;
        startInfo.Arguments = "-h";

        startInfo.RedirectStandardOutput = true;
        startInfo.RedirectStandardError = true;


        Process exeProcess = Process.Start(startInfo);

        // string error = exeProcess.StandardError.ReadToEnd();
        string output = exeProcess.StandardOutput.ReadToEnd();
        exeProcess.WaitForExit();
        return output;
    }


  


  This returns the following error :

  


  


  The system cannot find the file specified

  


  


  I am assuming this is referring to this part of the code :

  


  startInfo.FileName = "c:\\ffmpeg\\bin\\ffmpeg.exe";


  


  However, I checked and this is the correct path to my ffmpeg.exe file. On an even weirder note, this code works correct when tested in a new .net console application. However, I am creating an extension for OutSystems in integration, and when testing this code there it no longer works. The long exception from the logs is the following :

  


  


  CssbobffmpegCommandTestFolder
System.ComponentModel.Win32Exception : The system cannot find the file specified
at Object.s [as getException] (https://personal-jwy0bfog.outsystemscloud.com/FFMpegCommandGeneratorFFProbeVisual/scripts/OutSystems.js?RnlDcii3Xz75iIHHERIZtA:2:10241)
at c.onSuccess (https://personal-jwy0bfog.outsystemscloud.com/FFMpegCommandGeneratorFFProbeVisual/scripts/OutSystems.js?RnlDcii3Xz75iIHHERIZtA:3:7232)
at XMLHttpRequest. (https://personal-jwy0bfog.outsystemscloud.com/FFMpegCommandGeneratorFFProbeVisual/scripts/OutSystems.js?RnlDcii3Xz75iIHHERIZtA:3:2648)

  


  


  I researched similar problems and tried the following solutions :

  


  In place of :

  


  startInfo.FileName = "c:\\ffmpeg\\bin\\ffmpeg.exe";


  


  I tried :

  


    startInfo.WorkingDirectory = "c:\\ffmpeg\\bin";
  startInfo.FileName = @"ffmpeg.exe";


  


  I also tried changing the :

  


  startInfo.Arguments = "-h";


  


  to :

  


  startInfo.Arguments = "/C -h";


  


  I tried to "add new item" to my solution : the ffmpeg.exe file, and I tried the following logic :

  


  public static string testingNewApproachTwoThree(string commandToBeExecuted)
    {
        string res;
        ProcessStartInfo startInfo = new ProcessStartInfo();

        startInfo.CreateNoWindow = false;
        startInfo.UseShellExecute = false;
        startInfo.FileName = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "ffmpeg\\ffmpeg.exe");
        startInfo.Arguments = "-h";
        startInfo.RedirectStandardOutput = true;
        //startInfo.RedirectStandardError = true;

        res = string.Format(
            "Executing \"{0}\" with arguments \"{1}\".\r\n",
            startInfo.FileName,
            startInfo.Arguments) + " NEXT: ";

        try
        {
            using (Process process = Process.Start(startInfo))
            {
                while (!process.StandardOutput.EndOfStream)
                {
                    res = res + process.StandardOutput.ReadLine();

                }

                process.WaitForExit();
            }
        }
        catch (Exception ex)
        {
            res = res + "exception:" + ex.Message;
        }

        return res;
    }


  


  as suggested in a different question.

  


  I tried changing the capitalization of letters in the specified filepath to make sure it matches the naming of my folders. Nothing worked.

  


  Any ideas ?

  


• fate : move a few simple pixfmts tests to the new system.

  29 avril 2013, par Clément Bœsch

  fate : move a few simple pixfmts tests to the new system.
  

  • [DH] tests/fate/avfilter.mak
  • [DH] tests/fate/filter-video.mak
  • [DH] tests/lavfi-regression.sh
  • [DH] tests/ref/fate/filter-pixfmts-field
  • [DH] tests/ref/fate/filter-pixfmts-histeq
  • [DH] tests/ref/fate/filter-pixfmts-il
  • [DH] tests/ref/fate/filter-pixfmts-super2xsai