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

[FFmpeg]

#720: Volume filter does not work
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  jeremysalwen                       |                 Priority:  normal
               Status:  new          |                  Version:  git-
            Component:  avfilter     |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 What you were trying to accomplish:

 Test a libavfilter filter in ffmpeg.

 The problem you encountered:

 the libavfilter filter "volume" had no effect on the audio.

 Console output:

 $ ./ffmpeg -v 9 -loglevel 99 -i ~/write.wav -vf 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 @ 0x2f857e0] Format wav probed with size=2048 and score=99
 [pcm_s16le @ 0x2f8bc00] err{or,}_recognition separate: 1; 1
 [pcm_s16le @ 0x2f8bc00] err{or,}_recognition combined: 1; 65537
 [wav @ 0x2f857e0] parser not found for codec pcm_s16le, packets or times
 may be invalid.
 [wav @ 0x2f857e0] 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
 [pcm_s16le @ 0x302d0e0] err{or,}_recognition separate: 1; 1
 [pcm_s16le @ 0x302d0e0] err{or,}_recognition combined: 1; 65537
 [pcm_s16le @ 0x2f8bc00] err{or,}_recognition separate: 1; 65537
 [pcm_s16le @ 0x2f8bc00] err{or,}_recognition combined: 1; 65537
 Output #0, wav, to '/home/jeremy/lol.wav':
   Metadata:
     encoder         : Lavf53.24.0
     Stream #0:0, 0, 1/44100: Audio: pcm_s16le ([1][0][0][0] / 0x0001),
 44100 Hz, 2 channels, s16, 1411 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16le)
 Press [q] to stop, [?] for help
 size=   41665kB time=00:04:01.86 bitrate=1411.2kbits/s
 video:0kB audio:41665kB global headers:0kB muxing overhead 0.000108%

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