#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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