[FFmpeg-trac] #9392(avfilter:new): Wrong amplitude in showwavespic filter
FFmpeg
trac at avcodec.org
Thu Aug 26 08:28:53 EEST 2021
#9392: Wrong amplitude in showwavespic filter
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Reporter: Michael | Type: defect
Koch |
Status: new | Priority: normal
Component: avfilter | Version: git-
| master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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In the showwavespic filter, the option filter=average shows a larger
amplitude than filter=peak. That can't be right. The average can never be
larger than the peak.
Can be reproduced by comparing the output images:
ffmpeg -f lavfi -i sine=100:b=2 -t 0.2 -y sine.wav
ffmpeg -i sine.wav -lavfi "showwavespic=filter=average" -y average.png
ffmpeg -i sine.wav -lavfi "showwavespic=filter=peak" -y peak.png
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Ticket URL: <https://trac.ffmpeg.org/ticket/9392>
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