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  1. Member
    Join Date
    Dec 2009
    Location
    United States
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    I have a mp4 that does not focus on the specific sound I want.

    Is there a free utility that would extract the sound where I can run it through a graphics equalizer then put the video back together again? what would be the general usage steps to do this?

    Currently the loudness of the higher pitched sound I want is drowned out by other lower pitched sounds and you can almost cant hear what I want to hear.

    Here is the format of the sound from my MP4 video

    ID : 2
    Format :
    AAC
    Format/Info :
    Advanced Audio Codec
    Format version : Version 4
    Format profile :
    LC
    Format settings, SBR :
    No
    Codec ID :
    40
    Duration :
    5mn 31s
    Bit rate mode :
    Variable
    Bit rate :
    128 Kbps
    Channel(s) :
    2 channels
    Channel positions :
    L R
    Sampling rate :
    48.0 KHz
    Resolution :
    16 bits
    Stream size :
    5.06 MiB (1%)
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  2. Import the audio into Audacity (with ffmpeg plugin). Filter. Export as AAC. Mux AAC along with the video from the original file with YAMB.
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  3. Member bat999's Avatar
    Join Date
    Feb 2008
    Location
    United Kingdom
    Search Comp PM
    .....
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  4. Member
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    Dec 2009
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    United States
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    Originally Posted by jagabo View Post
    Import the audio into Audacity (with ffmpeg plugin). Filter. Export as AAC. Mux AAC along with the video from the original file with YAMB.
    Do I have to anything special to get the ffmpeg plug-in into Audacity? I mean, have other utilities I use that utilize ffmpeg, like Super, that use it. I guess what Im asking is how to link ffmpeg into Audacity? When I do this, does this mean I dont need any other utility to separate the video/audio?
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  5. Originally Posted by ehunter View Post
    Originally Posted by jagabo View Post
    Import the audio into Audacity (with ffmpeg plugin). Filter. Export as AAC. Mux AAC along with the video from the original file with YAMB.
    Do I have to anything special to get the ffmpeg plug-in into Audacity?
    http://manual.audacityteam.org/man/FAQ:Installation_and_Plug-Ins#ffdown
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  6. Member
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    Dec 2009
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    United States
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    Got it figured out.

    Using Free Video to Audio converter I can write a WAV file

    Using a DAX Eq software (not free) I can adjust the frequency bands and re-write the WAV file

    Then Avidamux us able to convert and sub the WAV file to ACC format and then write out the MP4.

    Works good.

    Thanks for the ideas guys!
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