[FFmpeg-trac] #9347(ffmpeg:closed): ... (was: volume=replaygain=track requires a + sign in front of positive values, but this is not standard replaygain spec)

FFmpeg trac at avcodec.org
Sun Jul 25 04:28:18 EEST 2021


#9347: ...
-------------------------------------+-------------------------------------
             Reporter:  simcc        |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  ffmpeg
              Version:  unspecified  |               Resolution:  duplicate
             Keywords:  ReplayGain   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by simcc):

 * summary:
     volume=replaygain=track requires a + sign  in front of positive
     values, but this is not standard replaygain spec
     => ...


Old description:

> Summary of the bug:
> The RGv2 specification clearly mentions the format of the tags, and it
> should not contain a '+' char. Try any files with replay_track_gain tags
> with positive values, i.e. 9.70 will not work, but if you adjust the
> metadata manually to +9.70, then it does work.
> How to reproduce:
> {{{
> % ffmpeg -i input.m4a -af volume=replaygain=track output.m4a
>
> ffmpeg -i input.mp4 -c:v copy -af volume=replaygain=track output.mp4
>
> etc.
>

> ffmpeg version 4.4
> built on OSX w/ homebrew
> }}}

New description:



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Ticket URL: <https://trac.ffmpeg.org/ticket/9347#comment:2>
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