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• Anomalie #2472 : Compagnon : un bug dans un des boutons de fermeture

  2 janvier 2012, par marcimat -

  C’est vrai qu’on avait mis ce define pour ça effectivement. C’est relou parce qu’on va l’avoir pour d’autres cas ça. Suhosin est assez présent. De mémoire Cédric tu disais qu’on pouvait difficilement activer le define d’office parce que

  si un navigateur à une url ajax et que le cache est vidé, on (...)

• Why is ffmpeg-python throwing a codec error here ?

  15 octobre 2019, par TwentyPenguins

  I’m trying out ffmpeg-python for the first time and I’m hitting what looks like a complex error surprisingly early on.

  Here’s my complete code as it stands :

  from tkinter import filedialog
  
  import ffmpeg
  
  
  
  sourceFile = filedialog.askopenfile()
  
  targetFile = filedialog.asksaveasfilename()
  
  
  
  stream = ffmpeg.input(sourceFile, ss=0, format='mov')
  
  stream = ffmpeg.output(stream, targetFile, format='mp4')
  
  ffmpeg.run(stream)

  In my head, this ought to be simple. The user browses to an existing MOV file (a standard h264 file which ’normal’ FFmpeg.exe can handle no problem on a Windows command line), then selects an output file for an MP4 to be saved, then FFmpeg is called and an MP4 file is converted from the MOV.

  However, regardless of what source file I choose, I am always hitting this error :

    File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\site-packages\ffmpeg\_ffmpeg.py", line 85, in output
  
    File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\site-packages\ffmpeg\_run.py", line 285, in run_async
  
      args, stdin=stdin_stream, stdout=stdout_stream, stderr=stderr_stream
  
    File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\subprocess.py", line 775, in __init__
  
      restore_signals, start_new_session)
  
    File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\subprocess.py", line 1119, in _execute_child
  
      args = list2cmdline(args)
  
    File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\subprocess.py", line 530, in list2cmdline
  
      needquote = (" " in arg) or ("\t" in arg) or not arg
  
    File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\lib\encodings\cp1252.py", line 23, in decode
  
      return codecs.charmap_decode(input,self.errors,decoding_table)[0]
  
  UnicodeDecodeError: 'charmap' codec can't decode byte 0x90 in position 41: character maps to <undefined>
  
  </undefined>

  The position number changes depending on the file but the error is always ’charmap’ codec can’t decode byte 0x90 in position [x] : character maps to < undefined >

  Please can somebody point me to where I may be going wrong on this one ? I feel the answer is staring me in the face but I’m not seeing it.

• FFmpeg version 4.0.1 cannot find h264 encoder

  3 juillet 2018, par Cristiano

  Today I updated FFmpeg to version 4.0.1 and my existing project cannot compile anymore. In particular avcodec_find_encoder(AV_CODEC_ID_H264) always returns null. I tried to reinstall the libx264 but nothing changed.
  I also tried to call avcodec_find_encoder_by_name("libx264") and it works, but avcodec_open2() returns error.