[FFmpeg-trac] #8919(avfilter:reopened): Setting 'fscale=log' together w/ 'start>0' will mess up the scaling of the y-axis in showspectrum(pic)

[FFmpeg]

#8919: Setting 'fscale=log' together w/ 'start>0' will mess up the scaling of the
y-axis in showspectrum(pic)
-------------------------------------+-------------------------------------
             Reporter:  RKleinert    |                    Owner:  (none)
                 Type:  defect       |                   Status:  reopened
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
  showspectrum, showspectrumpic      |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by RKleinert):

 * status:  closed => reopened
 * resolution:  fixed =>

Comment:

 We've just revied the function in the current version of ffmpeg
 (2021-10-18-git-d04c005021-full) and I have to report that the issue is
 still nox fixed.

 Choosing frequencies from 500 to 20000 Hz in my example the ration between
 two steps on the y-axis starts at around 1.4 at max. values and steadyly
 decreases to round about 1 at the bottom of the axis.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/8919#comment:2>
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