#9392 closed defect (fixed)
Wrong amplitude in showwavespic filter
| Reported by: | Michael Koch | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | avfilter |
| Version: | git-master | Keywords: | |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
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
Change History (4)
follow-up: 4 comment:1 by , 3 years ago
| Resolution: | → invalid |
|---|---|
| Status: | new → closed |
comment:2 by , 3 years ago
comment:3 by , 3 years ago
| Resolution: | invalid → fixed |
|---|
It seems it was fixed here:
http://ffmpeg.org/pipermail/ffmpeg-cvslog/2021-August/128581.html
comment:4 by , 3 years ago
Replying to richardpl.
It seems your closing of this ticket as “invalid” was very wrong. Please be more careful.
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please explain how the average can be larger than the peak