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• FFMpegCore.Exceptions.FFMpegException : 'ffmpeg exited with non-zero exit-code'

  15 octobre 2024, par secretply

  I am looking to retrieve the loudnorm data in JSON format from FFmpeg (using FFMpegCore 5.1.0). This is the code I currently have :

  


  await FFMpegArguments
    .FromPipeInput(new StreamPipeSource(fileStream.OpenReadStream()))
    .OutputToPipe(new StreamPipeSink(outputStream), options => options.WithCustomArgument("-af loudnorm=print_format=json"))
    .ProcessAsynchronously();


  


  This is the exception I get, which is similar to this old GitHub issue.

  


  System.IO.IOException: 'Pipe is broken.'

This exception was originally thrown at this call stack:
    System.IO.Pipes.PipeStream.PipeValueTaskSource.GetResult(short)
    System.IO.Pipes.PipeStream.PipeValueTaskSource.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(short)
    System.IO.Stream.CopyToAsync.__Core|27_0(System.IO.Stream, System.IO.Stream, int, System.Threading.CancellationToken) in Stream.cs
    FFMpegCore.Arguments.InputPipeArgument.ProcessDataAsync(System.Threading.CancellationToken)
    FFMpegCore.Arguments.PipeArgument.During(System.Threading.CancellationToken)
    FFMpegCore.FFMpegArguments.During(System.Threading.CancellationToken)
    FFMpegCore.FFMpegArgumentProcessor.Process(Instances.ProcessArguments, System.Threading.CancellationTokenSource)
    FFMpegCore.FFMpegArgumentProcessor.ProcessAsynchronously(bool, FFMpegCore.FFOptions)


  


  I am trying to replicate the following FFmpeg command and JSON output :

  


  ffmpeg -i "file.flac" -af loudnorm=print_format=json -f null -


  


  {
        "input_i" : "-21.87",
        "input_tp" : "-7.13",
        "input_lra" : "5.00",
        "input_thresh" : "-32.04",
        "output_i" : "-24.76",
        "output_tp" : "-10.36",
        "output_lra" : "4.10",
        "output_thresh" : "-34.84",
        "normalization_type" : "dynamic",
        "target_offset" : "0.76"
}


  


  If I add .ForceFormat("null") to the OutputToPipe options, I do not get the exception but when I read the output stream, it returns an empty string. In the issue mentioned, I know they mentioned a way to get the FFMpegErrorOutput property but I do not know how that can be done. I could not find an example of outputting a stream as JSON. If anyone can point me in the right direction or can provide an alternative solution, I would greatly appreciate it.

  


  Update

  


  I made a change to the StreamPipeSource() method where I copied over the uploaded file to a MemoryStream. With this change, the following FFMpegException is thrown.

  


  FFMpegCore.Exceptions.FFMpegException: 'ffmpeg exited with non-zero exit-code (-22 - ffmpeg version 7.0.1-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 13.2.0 (Rev5, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      59.  8.100 / 59.  8.100
  libavcodec     61.  3.100 / 61.  3.100
  libavformat    61.  1.100 / 61.  1.100
  libavdevice    61.  1.100 / 61.  1.100
  libavfilter    10.  1.100 / 10.  1.100
  libswscale      8.  1.100 /  8.  1.100
  libswresample   5.  1.100 /  5.  1.100
  libpostproc    58.  1.100 / 58.  1.100
[in#0 @ 000001bda86c67c0] Error opening input: Invalid argument
Error opening input file \\.\pipe\FFMpegCore_c6e5c.
Error opening input files: Invalid argument)'


  


• ffmpeg command problem in python to remove silences at the beggining and end. error : returned non-zero exit status 4294967274

  2 septembre 2024, par Teko JR

  I have a problem regarding ffmpeg use in jupyter notebooks. I'm trying to use this funcion for an audio, but I get the below error, I have tried changing the file to wav and different specifications of the command code. But nothing works.

  


  def remove_silence(input_file):
    """
    Remove silence from the start and end of an audio file and overwrite the original file.

    Args:
    input_file (str): Path to the audio file.

    Returns:
    str: Path to the processed audio file (same as input path).
    """
    # Construir el comando FFmpeg en una lista
    ffmpeg_cmd = [
        "ffmpeg",
        "-y",  # Sobrescribir el archivo de salida sin preguntar
        "-i", input_file,  # Archivo de entrada
        "-af", "silenceremove=start_periods=1:stop_periods=-1:start_threshold=-50dB:stop_threshold=-50dB:start_silence=0.2:stop_silence=0.2",  # Filtros de audio
        input_file  # Archivo de salida (sobrescribiendo el archivo original)
    ]
    
    try:
        # Ejecutar el comando
        subprocess.run(ffmpeg_cmd, check=True)
        print("Silence successfully removed!")
        return input_file
    except subprocess.CalledProcessError as e:
        print(f"Error during silence removal: {e}")
        return None


  


  error message :

  


  Error during silence removal: Command '['ffmpeg', '-y', '-i', 'BNE.wav', '-af', 'silenceremove=start_periods=1:stop_periods=-1:start_threshold=-50dB:stop_threshold=-50dB:start_silence=0.2:stop_silence=0.2', 'BNE.wav']' returned non-zero exit status 4294967274.


  


• ffmpeg does not exit when pipe is closed ?

  9 juin 2024, par Thomas

  If this has already been brought up, I apologize. This is part of a software tuner package I am writing as a POC. It is used by Plex Media Server. For the most part, it works with good picture quality but leaves ffmpeg processes when the User clicks "Stop" or closes the browser, I assume plex is closing the socket and that ffmpeg is not erroring out, but I am not sure. this is part of a function where I pass in a TCP Client Network Stream.

  


  TCPListener waits for a call, when it accepts one, it passes the network stream off to this function below. When the TCP Client disconnects, ffmpeg never exits, waitforexit never returns.

  


  ffmpeg args :

  


  -hide_banner -loglevel error -i {0} -c copy -f mpegts pipe:1


  


  c#

  


   string Arguments = string.Format(ffmpegStreamOptions, URL,Overlay);
 Process p = new Process();
 p.StartInfo.UseShellExecute = false;
 p.StartInfo.RedirectStandardOutput = true;
 p.StartInfo.RedirectStandardError = true;
 p.StartInfo.CreateNoWindow = true;
 p.StartInfo.FileName = "ffmpeg.exe"; // Replace with your executable path
 p.StartInfo.Arguments = Arguments;
 
 p.Start();
 var errorMemoryStream = new MemoryStream();
 var programTask = Task.WhenAny(
     p.StandardOutput.BaseStream.CopyToAsync(client_stream


  


  ),
p.StandardError.BaseStream.CopyToAsync(errorMemoryStream)
) ;

  


   p.WaitForExit(); //stuck here after the connection is broken and never exits.


  


  Any help would be appreciated
Thanks !