[FFmpeg-trac] #10276(undetermined:new): Reversed channel order with showspectrumpic mode=separate

FFmpeg trac at avcodec.org
Mon Mar 27 21:05:04 EEST 2023


#10276: Reversed channel order with showspectrumpic mode=separate
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:  (none)
  SomeHumanPerson                    |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
  showspectrumpic                    |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by SomeHumanPerson):

 I'm using the temporary workaround of remapping the channels before
 passing to "showspectrumpic" (again using a 5.1 channel input for my
 example):

 {{{
 % ffmpeg -hide_banner -i "F:\Test.wav" -filter_complex
 "channelmap=map=5|4|3|2|1|0[rev];[rev]showspectrumpic=mode=separate:fscale=log:size=1200x1536"
 -frames:v 1 -update 1 Spectrogram.png
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10276#comment:1>
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