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• input stream error _read() is not implemented : ffmpeg-fluent

  23 mai 2018, par Thomsheer Ahamed

  I have buffer object. I want to pass that buffer as readable stream to ffpmeg.

  var ffmpeg = require('fluent-ffmpeg');
  
      var ffmpegPath = require("ffmpeg-binaries").ffmpegPath()
  
      ffmpeg.setFfmpegPath(ffmpegPath);
  
      var command = new ffmpeg();
  
  
  
      command.input(my_buffer)
  
          .videoCodec('libx264')
  
          .size('520x?')
  
          .aspect('4:3')
  
          .inputFPS(8)
  
          .outputFPS(30)
  
          .output('new_video.mp4')
  
          .on('start', onStrat)
  
          .on('progress', onProgress)
  
          .on('end', onEnd)
  
          .on('error', onError)
  
          .run();

  If I pass buffer right away I will get "Error : Invalid input
  at FfmpegCommand.proto.mergeAdd.proto.addInput.proto.input"

  So I converted buffer into stream using

  function bufferToStream(buffer) {
  
      let Duplex = require('stream').Duplex;
  
      let stream = new Duplex();
  
      stream.push(new Buffer(buffer));
  
      stream.push(null);
  
      return stream;
  
  }
  
  var red = bufferToStream(finalResponse.file.buffer);

  and passed this steam to input

  command.input(red)

  Above Command throws "ffmpeg exited with code 1 : Error opening filters !" ;

  If I use my_buffer and save it in locally using fs.writeFile(’path’,my_buffer) and pass this path to input of ffmpeg then it works fine..

  But I dont want to store that file and then delete it after altering video.

  Can some one help me ?

  I Reffered this example

• apply spelling fixes

  10 novembre 2023, par Diederik de Haas via ffmpeg-devel

  apply spelling fixes
  Fix spelling issue as reported by Debian's lintian tool :
  
  accomodate -> accommodate
  
  addtional -> additional
  
  auxillary -> auxiliary
  
  bellow -> below
  
  betweeen -> between
  
  Calulate -> Calculate
  
  coefficents -> coefficients
  
  Defalt -> Default
  
  defaul -> default
  
  higer -> higher
  
  neccesary -> necessary
  
  orignal -> original
  
  ouput -> output
  
  precison -> precision
  
  processsing -> processing
  
  substract -> subtract
  
  Transfered -> Transferred
  
  upto -> up to
  Also add several of them to the 'common typos' check in patcheck.
  Signed-off-by : Diederik de Haas <didi.debian@cknow.org>
  

  • [DH] doc/demuxers.texi
  • [DH] doc/filters.texi
  • [DH] libavcodec/cbs_bsf.h
  • [DH] libavdevice/pulse_audio_enc.c
  • [DH] libavfilter/af_aiir.c
  • [DH] libavfilter/af_surround.c
  • [DH] libavfilter/cuda/load_helper.h
  • [DH] libavfilter/opencl/deshake.cl
  • [DH] libavfilter/vf_dedot.c
  • [DH] libavfilter/vf_transpose_npp.c
  • [DH] libavformat/dashenc.c
  • [DH] libavformat/demux.h
  • [DH] libavformat/scd.c
  • [DH] libavutil/eval.h
  • [DH] libavutil/hwcontext_vulkan.c
  • [DH] tools/enc_recon_frame_test.c
  • [DH] tools/patcheck

• C# on linux : FFmpeg (FFMediaToolkit) on linux System.IO.DirectoryNotFoundException : Cannot found the default FFmpeg directory

  6 mai 2021, par Jan Černý

  I have C# project in rider and FFMediaToolkit installed via NuGet. I made instance of MediaBuilder. When I hit run I get this error message :

  


  /home/john/Projects/Slimulator/bin/Debug/net5.0/Slimulator /home/john/Projects/Slimulator/test_mazes/small-maze-food2.png
Loading file /home/john/Projects/Slimulator/test_mazes/small-maze-food2.png
Unhandled exception. System.IO.DirectoryNotFoundException: Cannot found the default FFmpeg directory.
On Windows you have to set "FFmpegLoader.FFmpegPath" with full path to the directory containing FFmpeg shared build ".dll" files
For more informations please see https://github.com/radek-k/FFMediaToolkit#setup
   at FFMediaToolkit.FFmpegLoader.LoadFFmpeg()
   at FFMediaToolkit.Encoding.Internal.OutputContainer.Create(String extension)
   at FFMediaToolkit.Encoding.MediaBuilder..ctor(String path, Nullable`1 format)
   at FFMediaToolkit.Encoding.MediaBuilder.CreateContainer(String path)
   at Slimulator.AnimationBuffer..ctor(String videoPath, Int32 height, Int32 width, Int32 frameRate) in /home/john/Projects/Slimulator/AnimationBuffer.cs:line 11
   at Slimulator.Simulation..ctor(Space space, String seed, String outputVideoPath) in /home/john/Projects/Slimulator/Simulation.cs:line 12
   at Slimulator.Launcher.Main(String[] args) in /home/john/Projects/Slimulator/Launcher.cs:line 8

Process finished with exit code 134.


  


  When I go to https://github.com/radek-k/FFMediaToolkit#setup I find just this :

  


  


  Linux - Download FFmpeg using your package manager.

  


  You need to set FFmpegLoader.FFmpegPath with a full path to FFmpeg libraries.

  


  If you want to use 64-bit FFmpeg, you have to disable the Build -> Prefer 32-bit option in
Visual Studio project properties.

  


  


  I have already installed FFmpeg package via pacman and I am still getting these error.

  


  How can I fix this so I can use FFMediaToolkit without problem on linux ?
  
Thank you for help

  


  EDIT1 : I use Arch linux.
EDIT2 : There is related issue on github : https://github.com/radek-k/FFMediaToolkit/issues/80