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

FFmpeg trac at avcodec.org
Thu Dec 8 06:08:24 CET 2011


#720: Volume filter does not work
--------------------------------------+------------------------------------
             Reporter:  jeremysalwen  |                    Owner:
                 Type:  defect        |                   Status:  new
             Priority:  normal        |                Component:  avfilter
              Version:  git-master    |               Resolution:
             Keywords:                |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
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Comment (by 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
 [wav @ 0x20e07e0] Format wav probed with size=2048 and score=99
 [pcm_s16le @ 0x20e6c00] err{or,}_recognition separate: 1; 1
 [pcm_s16le @ 0x20e6c00] err{or,}_recognition combined: 1; 65537
 [wav @ 0x20e07e0] parser not found for codec pcm_s16le, packets or times
 may be invalid.
 [wav @ 0x20e07e0] max_analyze_duration 5000000 reached at 5015510
 Input #0, wav, from '/home/jeremy/write.wav':
   Duration: 00:04:01.86, bitrate: 1411 kb/s
     Stream #0:0, 218, 1/44100: Audio: pcm_s16le ([1][0][0][0] / 0x0001),
 44100 Hz, 2 channels, s16, 1411 kb/s
 Unrecognized option 'af'
 Failed to set value 'volume=0.1' for option 'af'

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/720#comment:1>
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