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  • Extract WAV audio file from video after uploading on web, using FFMPEG in django

    26 mars 2019, par maryam mehboob

    Problem

    I am trying to find a way to extract an audio wav file from a mp4 video file that is uploaded by a web user using ffmpeg using Django.

    If I will find to extract audio, then where should I save it in my project ?

    1. I tried it with "Django-ffmpeg", but didn’t convert and was stuck in ’pending conversion’ message.

    2. Then I tried with :

      import subprocess
      

      
subprocess.call('ffmpeg -i filename.mp4 filename.wav')

    Error

    Error

    Script

    def validate_file_extension(value) :
    import os
    from django.core.exceptions import ValidationError
    ext = os.path.splitext(value.name)1 # [0] returns path+filename
    filename = os.path.splitext(value.name)1 # [0] returns path+filename
    valid_extensions = [’.mp4’]
    if not ext.lower() in valid_extensions :
    raise ValidationError(u’Unsupported file extension.’)
    else :
    import subprocess
    subprocess.call(’ffmpeg -i filename.mp4 filename.wav’)

  • how to modify movie filter in ffmpeg using zmq

    14 juin 2016, par ramon1604

    So far, we can modify overlay, scale and others but we do not find the proper syntax to modify movie filter in ffmpeg. We are using perl to send zmq command to ffmpeg and it returns 0 success when command is properly received. Please help. thanks

  • Revision a4e85a5f4f : Implementing right flushing for simple_encoder. simple_encoder : Flush encoder.

    11 août 2014, par Dmitry Kovalev

    Changed Paths :
     Modify /examples/simple_encoder.c



    Implementing right flushing for simple_encoder.

    simple_encoder : Flush encoder. According to the current API spec we need
    to call vpx_codec_encode() until vpx_codec_get_cx_data() returns NULL.

    Change-Id : Ibc37706e5257a3d51e5421ca17f77ab41249d9b5

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