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• How to convert audio files from mp4 to mp3 using applescript ?

  15 décembre 2017, par MBUST

  Can someone please help me understand how to convert audio files from mp4 to mp3 using AppleScript ?

  I have tried scripting VLC or Sound Studio but the commands don’t seem to come close to doing that. I downloaded and installed ffmpeg but I don’t know the syntax to use.

  I tried something like this with ffmpeg :

   tell application "Finder"
  
  set CurrentPath to container of (path to me) as alias
  
  set OriginalFile to CurrentPath & "ASProcessing:SoundToProcess.mp4" as string
  
  set NewFile to CurrentPath & "ASProcessing:NewFile.mp3" as string
  
  
  
  end tell
  
  
  
  
  
   set outputFile to POSIX path of OriginalFile
  
   set inputFile to POSIX path of NewFile
  
   do shell script ffmpeg something, something

  But clearly I’m missing most of the script syntax. Eventually, I would do a repeat loop to go through a set of files.

  Sorry that I can’t be more specific. I’m pretty lost with this. What I do know is that I do not want to use Automator. I need something like AppleScript.

  Thanks.

  mbust

• How to use ffmpeg in a python function

  18 février 2019, par Jamiewp

  I have tried to use a ffmpeg to extract an audio from a video file and this is my code

  import io
  
  import os
  
  import subprocess
  
  
  
  def extract_audio(video,output):
  
      command = "ffmpeg -i '{video}' -ac 1  -f flac -vn '{output}'"
  
      subprocess.call(command,shell=True)
  
  
  
  extract_audio('dm.MOV','dm-new.flac')

  And I got no error after compiled. By doing this I should get a new file which is ’dm-new.flac’. But there is no such a flac file created after I compile the script. I think there are something wrong with the syntax or something in the variable ’command’ which I have no idea to fix this. My question here is how can I use ffmpeg in a python function base on this code ?

  By the way, I knew that I could just use ffmpeg without writing a function. But I really need to write in in a function. Thank you

• Combining Audio and Video file in python [duplicate]

  8 juin 2020, par yso

  I'm trying to understand how to us ffmpeg to combine video and audio files in python. I want to combine a .avi file and a .wav file to create a final .avi file. Is this the right approach ? I'm confused by the ffmpeg syntax.
Any help would be great.

  



  I was looking through this for help :
https://wiki.libav.org/Snippets/avconv#Combine_audio_and_video_file

  



  import ffmpeg
import subprocess

cmd = 'ffmpeg -i inputvideo.avi -i inputaudio.wav -c:v copy -c:a aac output_video_and audio.avi'
subprocess.call(cmd, shell=True)                                     # "Muxing Done
print('Muxing Done')