[FFmpeg-trac] #9352(avfilter:new): loudnorm filter goofs loudness measurements in some cases

[FFmpeg]

#9352: loudnorm filter goofs loudness measurements in some cases
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             Reporter:  Gregory      |                    Owner:  (none)
  Beauregard                         |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
  loudnorm,ebur128                   |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by richardpl):

 You are definitely resampling twice causing some overclipped output with
 aresample=osr=48000:dither_method=shibata,aformat=r=192000

 Anyway dithering should be always last step in processing IIRC

 you can fix your command with using float sample format as output like
 this:

 ffmpeg -i loudnorm_samp.mkv -af
 aresample=ocl=stereo:dither_method=shibata:osr=48000:osf=flt,loudnorm=print_format=json
 -f null -
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Ticket URL: <https://trac.ffmpeg.org/ticket/9352#comment:15>
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