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• Ffmpeg on idle python Mac

  27 février 2020, par lllakkka

  I am trying to use FFMPEG on idle 3.7.4 python on macOS Catalina.

  I ran brew install ffmpeg and it successfully installed.

  However, when I go to IDLE and run my script (the script is to convert a .mp3 file to a .wav) :

  from os import path
  
  from pydub import AudioSegment    
  
  
  
  src = "transcript.mp3"
  
  dst = "test.wav"         
  
  
  
  sound = AudioSegment.from_mp3(src)
  
  sound.export(dst, format="wav")

  This is what I get in return :

  Warning (from warnings module):
  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pydub/utils.py", line 165
  
      warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)
  
  RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work
  
  
  
  Warning (from warnings module):
  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pydub/utils.py", line 193
  
      warn("Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work", RuntimeWarning)
  
  RuntimeWarning: Couldn't find ffprobe or avprobe - defaulting to ffprobe, but may not work
  
  Traceback (most recent call last):
  
    File "/Users/edenhikri/Desktop/transcript.py", line 9, in <module>
  
      sound = AudioSegment.from_mp3(src)
  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pydub/audio_segment.py", line 716, in from_mp3
  
      return cls.from_file(file, 'mp3', parameters=parameters)
  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pydub/audio_segment.py", line 665, in from_file
  
      info = mediainfo_json(orig_file)
  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pydub/utils.py", line 263, in mediainfo_json
  
      res = Popen(command, stdin=stdin_parameter, stdout=PIPE, stderr=PIPE)
  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 775, in __init__
  
      restore_signals, start_new_session)
  
    File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/subprocess.py", line 1522, in _execute_child
  
      raise child_exception_type(errno_num, err_msg, err_filename)
  
  FileNotFoundError: [Errno 2] No such file or directory: 'ffprobe': 'ffprobe'
  
  </module>

• Combining audio file and image with ffmpeg in python

  6 octobre 2018, par Liam

  tl ;dr : how to use a bash ffmpeg command in python

  So I’m trying to take one JPEG image and an audio file as input and generate a video file of the same duration as the audio file (by stretching the still image for the whole duration).

  So, I found these :
  https://superuser.com/questions/1041816/combine-one-image-one-audio-file-to-make-one-video-using-ffmpeg

  So, I now have the code for the merging :
  ffmpeg -loop 1 -i image.jpg -i audio.wav -c:v libx264 -tune stillimage -c:a aac -b:a 192k -pix_fmt yuv420p -shortest out.mp4

  Then I want to use that in python but unable to figure out how to port this to ffmpeg-python or ffpy.

  I found this : Combining an audio file with video file in python

  So, I tried the same thing as him :

  cmd = 'ffmpeg -loop 1 -i image.jpg -i message.mp3 -c:v libx264 -tune stillimage -c:a aac -b:a 192k -pix_fmt yuv420p -shortest out.mp4'
  
  subprocess.check_output(cmd, shell=True) 
  
  subprocess.call(cmd, shell=True)

  But I got "returned non-zero exit status 1". So what did I do wrong ?

• Redact parts of an audio file using python (FFMPEG)

  18 août 2020, par K3rn3l5

  I have a use case where I need to dynamically redact parts of an audio file using python. For example sometimes I may have to remove between timestamps 10 to 15 and other times between 5 to 7, 12 to 16 and 21 to 26 . I have tried looking at FFMPEG and think it may be possible with filters or chaining filters, but I am having trouble figuring out which ones to use and the combination. Any help or pointers will be highly appreciated. TIA !