[FFmpeg-trac] #1792(swresample:reopened): libswresample mono to stereo conversion is lowering the amplitude

FFmpeg trac at avcodec.org
Thu May 16 09:25:43 CEST 2013


#1792: libswresample mono to stereo conversion is lowering the amplitude
-------------------------------------+-------------------------------------
             Reporter:  albertzeyer  |                    Owner:  michael
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:
              Version:  unspecified  |  swresample
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by heleppkes):

 When you output one channel to two speakers, the perceived loudness
 increases and swresample compensates for this by reducing the loudness of
 the channels accordingly, so that the perceived loudness does not change.

 This behavior is expected.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1792#comment:5>
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