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• How disable keyinput for ffplay/ffmpeg ? [on hold]

  21 juillet 2018, par Los Pollos Hermanos

  Code for open & play custom video (.mp4) file in new window without form border with audio using ffplay.exe

      ffplay = new Process();
  
      ffplay.StartInfo.FileName = @"ffmpeg\bin\ffplay.exe";
  
      ffplay.StartInfo.EnvironmentVariables.Add("SDL_AUDIODRIVER", "directsound");
  
      ffplay.StartInfo.Arguments = "-noborder -autoexit -i movie.mp4";
  
      ffplay.StartInfo.CreateNoWindow = true;
  
      ffplay.StartInfo.RedirectStandardOutput = true;
  
      ffplay.StartInfo.UseShellExecute = false;
  
      ffplay.EnableRaisingEvents = true;
  
      ffplay.Start();

  This code works ok, but I need disable or intercept any keycontrol of video player, it needs for implementing player into my form. I did not find anything about this on ffplay documentation.

  Here is documentation for using ffplay : While playing/keycontrol

• FFmpeg send multiple inputs through a stream

  18 janvier 2023, par Stiven Diplet

  I have the following code that passes data to the ffmpeg process through a thread.

  


  public void VideoToImages3()
{
    var inputFile = @"C:\testvideo.avi";
    var outputFile = @"C:\outputFile.mp4";

    var process = new Process
    {
        StartInfo = new ProcessStartInfo
        {
            RedirectStandardInput = true,
            UseShellExecute = false,
            CreateNoWindow = true,
            Arguments = $"-y -i - {outputFile}",
            FileName = _ffmpeg
        },
        EnableRaisingEvents = true
    };

    process.Start();

    //Write input data to input stream
    var inputTask = Task.Run(() =>
    {
        using (var input = new FileStream(inputFile, FileMode.Open))
        {
            input.CopyTo(process.StandardInput.BaseStream);
        }
    });

    Task.WaitAll(inputTask);

    process.WaitForExit();
}


  


  In this case, I only upload 1 file through the stream (-i -). What if I need to stream multiple input files (-i - -i -). For example, when adding an Audio File to a Video File ?

  


  "ffmpeg -y -i {audioFilePath} -i {videoFilePath} {outputFilePath}"


  


  How to transfer files via StandardInput if 2 input arguments are specified ???

  


  I can't find a solution

  


• Naudio produces wierd noise with ffmpeg

  7 décembre 2020, par Sfue

  Hi there I was trying to make a music player in c# using the windows form and I ended up something like this -

  


  var ffmpeg = Process.Start(new ProcessStartInfo
            {
                FileName = "ffmpeg",
                Arguments = $@"-loglevel panic -i ""path/to/my-music.mp3"" -ac 2 -f s16le -ar 44100 pipe:1",
                UseShellExecute = false,
                CreateNoWindow = true,
                RedirectStandardOutput = true
            }); 
            var p = new RawSourceWaveStream(ffmpeg.StandardOutput.BaseStream,new WaveFormat(44100 , 16, 1));
waveOutDevice.Init(p);
waveOutDevice.Play();


  


  But it seems to produce some weird cracking noises , I have been trying it out since 2 days but couldn't get a fix, Any help ?