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• What is the right command to convert an mp3 file to the required codec version (MPEG version 2) and bit rate (48 kbps) for Amazon Alexa SSML ?

  6 mai 2017, par Asimov4

  I am trying to convert an mp3 file to the format expected by the audio tag in the Amazon Alexa SSML markup language as described here : https://developer.amazon.com/public/solutions/alexa/alexa-skills-kit/docs/speech-synthesis-markup-language-ssml-reference

  The documentation recommends using https://www.ffmpeg.org/ffmpeg.html

  I tried this command but can’t find the right codec to use :
  ffmpeg -y -i input.mp3 -ar 44100 -ab 48k -codec:a mpeg2 -ac 1 output.mp3

  I know I need to convert the file because Alexa fails with the following error : The audio is not of a supported MPEG version

• What is the right command to convert an mp3 file to the required codec version (MPEG version 2) and bit rate (48 kbps) for Amazon Alexa SSML ?

  1er février 2019, par Asimov4

  I am trying to convert an mp3 file to the format expected by the audio tag in the Amazon Alexa SSML markup language as described here : https://developer.amazon.com/public/solutions/alexa/alexa-skills-kit/docs/speech-synthesis-markup-language-ssml-reference

  The documentation recommends using https://www.ffmpeg.org/ffmpeg.html

  I tried this command but can’t find the right codec to use :
  ffmpeg -y -i input.mp3 -ar 44100 -ab 48k -codec:a mpeg2 -ac 1 output.mp3

  I know I need to convert the file because Alexa fails with the following error : The audio is not of a supported MPEG version

• Save generated image to ImageField model Django

  7 janvier 2023, par MrLonely

  


  Detected path traversal attempt in '/home/mrlonely/Desktop/lumen/lumen/media/thumbnail/6.jpeg'

  


  


  When i run this in the views.py :

  


  def generate_thumbnail(instance):
   post = Post.objects.get(pk=instance.pk)
   output = 'media/thumbnail/' + post.title + '.jpeg'
   filename_thumbnail = Path.joinpath(filename, output)  
   try:
      (
            ffmpeg
            .input(str(filename)+post.video.url, ss='00:00:20')
            .output(output, vframes=1)
            .overwrite_output()
            .run(capture_stdout=True, capture_stderr=True)
        )
      with open(filename_thumbnail, 'rb') as file_handler:
         django_file = File(file_handler)
         post.thumbnail.save(filename_thumbnail, 'thumbnail/')
   except ffmpeg.Error as e:
        print(e.stderr.decode(), file=sys.stderr)
        sys.exit(1)


  


  I am trying to connect the ffmpeg generated thumbnail to the model ImageField on the Post model (instance is post)