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• VLC can read mp3 but FFMPEG "could not find codec parameters"

  9 septembre 2021, par Be Chiller Too

  I'm trying to process some audio with PyDub, but encountered an error, that seems to stem from ffmpeg, so I investigated, tried to process the audio file directly with ffmpeg and I reproduced the error :

  


  PS C:\Users\Me\AppData\Local\Temp\16311759704613> ffmpeg -i .\input.mp3 out.wav
ffmpeg version 2020-12-12-git-5148740e79-essentials_build-www.gyan.dev Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10.2.0 (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-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      56. 62.100 / 56. 62.100
  libavcodec     58.115.102 / 58.115.102
  libavformat    58. 65.100 / 58. 65.100
  libavdevice    58. 11.103 / 58. 11.103
  libavfilter     7. 93.100 /  7. 93.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
[mpegts @ 00000220e533d3c0] changing packet size to 188
[mpegts @ 00000220e533d3c0] changing packet size to 204
[mpegts @ 00000220e533d3c0] changing packet size to 192
[mpegts @ 00000220e533d3c0] changing packet size to 188
[mpegts @ 00000220e533d3c0] changing packet size to 204
[mpegts @ 00000220e533d3c0] changing packet size to 192
[mpegts @ 00000220e533d3c0] changing packet size to 188
[mpegts @ 00000220e533d3c0] changing packet size to 204
[mpegts @ 00000220e533d3c0] changing packet size to 192
.\input.mp3: could not find codec parameters
PS C:\Users\Me\AppData\Local\Temp\16311759704613>


  


  I tried to listen to the audio, VLC can open the file :

  


  

  


  And Audacity can too :

  


  

  


  What can I do to process this file with ffmpeg ?

  


• FFMPEG not recognising -crf or -qp

  23 avril 2021, par Benj

  I am trying to make a losslessly encoded mp4 video out of png images.

  


  I have a folder of images named frame-%d.png.

  


  ffmpeg -i frame-%d.png -framerate 30 -c:v libx264 -crf 0 output.mp4

  


  FFMPEG rejects crf and qp with the message :

  


  ffmpeg -i frame-%d.png -framerate 30 -c:v libx264 -crf 0 output.mp4
ffmpeg version N-97327-g05039c1334 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: 
  libavutil      56. 42.102 / 56. 42.102
  libavcodec     58. 78.102 / 58. 78.102
  libavformat    58. 42.100 / 58. 42.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 77.101 /  7. 77.101
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
Unrecognized option 'crf'.
Error splitting the argument list: Option not found


  


  Why is crf unavailable ?

  


• Unable to find a suitable output format for 'ffmpeg' I/flutter (29205) : ffmpeg : Invalid argument

  24 juillet 2020, par Abhijit Rajmane

  I'm trying to mix two audio files using flutter_ffmpeg : 0.2.10 but I get

  


  [NULL @ 0xd77d4400] Unable to find a suitable output format for 'ffmpeg'
I/flutter (29205): ffmpeg: Invalid argument

code : 
String file1= _localPath+"/file1.m4a";
String file2= _localPath+"/file2.mp3";
String output= _localPath+"/abhijit.wav";

String finalPath= "ffmpeg -i "+ file1 +" -i "+file2+" -filter_complex amix=inputs=2:duration=first:dropout_transition=0 "+output;

console ffmpeg's message...
I/flutter (29205):   libavutil      56. 38.100 / 56. 38.100
I/flutter (29205):   libavcodec     58. 65.102 / 58. 65.102
I/flutter (29205):   libavformat    58. 35.101 / 58. 35.101
I/flutter (29205):   libavdevice    58.  9.103 / 58.  9.103
I/flutter (29205):   libavfilter     7. 70.101 /  7. 70.101
I/flutter (29205):   libswscale      5.  6.100 /  5.  6.100
I/flutter (29205):   libswresample   3.  6.100 /  3.  6.100
I/flutter (29205): Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Android/data/com.arthenica.flutter.ffmpeg.FlutterFFmpegExample/files/Download/file1.m4a':
I/flutter (29205):   Metadata:
I/flutter (29205):     major_brand     : mp42
I/flutter (29205):     minor_version   : 1
I/flutter (29205):     compatible_brands: isommp41mp42
I/flutter (29205):     creation_time   : 2020-07-09T15:42:47.000000Z
I/flutter (29205):   Duration: 00:12:12.26, start: 0.000000, bitrate: 61 kb/s
I/flutter (29205):     Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 60 kb/s (default)
I/flutter (29205):     Metadata:
I/flutter (29205):       creation_time   : 2020-07-09T15:42:47.000000Z
I/flutter (29205):       handler_name    : Core Media Audio
I/flutter (29205): Input #1, mp3, from '/storage/emulated/0/Android/data/com.arthenica.flutter.ffmpeg.FlutterFFmpegExample/files/Download/file2.mp3':
I/flutter (29205):   Metadata:
I/flutter (29205):     artist          : SoundHelix
I/flutter (29205):     genre           : Techno
I/flutter (29205):     encoder         : Lavf58.20.100
I/flutter (29205):   Duration: 00:00:23.12, start: 0.011995, bitrate: 192 kb/s
I/flutter (29205):     Stream #1:0: Audio: mp3, 44100 Hz, stereo, fltp, 192 kb/s
I/flutter (29205):     Metadata:
I/flutter (29205):       encoder         : Lavf
I/flutter (29205): [NULL @ 0xd77d4400] Unable to find a suitable output format for 'ffmpeg'
I/flutter (29205): ffmpeg: Invalid argument
I/flutter (29205): "
I/flutter (29205): New FFmpeg pipe: /data/user/0/com.arthenica.flutter.ffmpeg.FlutterFFmpegExample/cache/mf_pipe_7
I/flutter (29205): FFmpeg process exited with rc 1


  


  Please check command of FFmpeg and suggest me if any correction occur, Unable to find a suitable output format for 'ffmpeg' I/flutter (29205) : ffmpeg : Invalid argument
I have no idea about this error please help me