[FFmpeg-trac] #720(avfilter:closed): Volume filter does not work

[FFmpeg]

#720: Volume filter does not work
--------------------------------------+------------------------------------
             Reporter:  jeremysalwen  |                    Owner:
                 Type:  defect        |                   Status:  closed
             Priority:  normal        |                Component:  avfilter
              Version:  git-master    |               Resolution:  invalid
             Keywords:                |               Blocked By:
             Blocking:                |  Reproduced by developer:  1
Analyzed by developer:  1             |
--------------------------------------+------------------------------------
Changes (by saste):

 * analyzed:  0 => 1
 * status:  new => closed
 * resolution:   => invalid
 * reproduced:  0 => 1


Comment:

 Replying to [comment:1 jeremysalwen]:
 > Also note that with -af I get
 >
 > ./ffmpeg -v 9 -loglevel 99 -i ~/write.wav -af volume=0.1 ~/lol.wav
 > ffmpeg version N-35540-g0cc9949, Copyright (c) 2000-2011 the FFmpeg
 developers
 >   built on Dec  7 2011 22:26:02 with gcc 4.6.1
 >   configuration: --enable-filter=earwax
 >   libavutil    51. 30. 0 / 51. 30. 0
 >   libavcodec   53. 41. 2 / 53. 41. 2
 >   libavformat  53. 24. 0 / 53. 24. 0
 >   libavdevice  53.  4. 0 / 53.  4. 0
 >   libavfilter   2. 51. 0 /  2. 51. 0
 >   libswscale    2.  1. 0 /  2.  1. 0
 [...]
 > Unrecognized option 'af'
 > Failed to set value 'volume=0.1' for option 'af'

 Hi, this is correct, -af was never integrated in the main repository, and
 using -vf for audio filters i evidently wrong, so the only way to use
 audio filtering is through the lavfi input device.

 You use it this way:
 {{{
 ffmpeg -f lavfi -i "amovie=INFILE,volume=0.1" OUTFILE
 }}}

 Closing the ticket as invalid, feel free to add a feature request for
 integrating -af into the main repository so you can track it.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/720#comment:2>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker