Changes between Version 2 and Version 3 of How to change audio volume up-down with FFmpeg


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Timestamp:
Aug 4, 2017, 2:04:49 PM (19 months ago)
Author:
slhck
Comment:

redirect to page with nicer URL

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  • How to change audio volume up-down with FFmpeg

    v2 v3  
    1 To turn the audio volume up or down, you may use FFmpeg's Audio Filter named [http://ffmpeg.org/ffmpeg.html#volume volume], like in the following example.
    2 If we want our volume to be half of the input volume:
    3 {{{
    4 ffmpeg -i input.wav -af "volume=0.5" output.wav
    5 }}}
    6 150% of current volume:
    7 {{{
    8 ffmpeg -i input.wav -af "volume=1.5" output.wav
    9 }}}
    10 
    11 If you are familiar with decibels you can also use '''dB:'''
    12 {{{
    13 ffmpeg -i input.wav -af "volume=10dB" output.wav
    14 }}}
    15 ----
    16 
    17 In older versions of FFmpeg, the option "-af" wasn't implemented, so we had to use this:
    18 {{{
    19 ffmpeg -f lavfi -i "amovie=input.wav,volume=0.5" output.wav
    20 }}}
    21 
    22 More info here: http://ffmpeg.org/trac/ffmpeg/ticket/720
     1See [[AudioVolume]]