[FFmpeg-trac] #5931(avfilter:reopened): showwavespic, showspectrumpic innacurate length of resulting image
FFmpeg
trac at avcodec.org
Wed Jun 27 03:55:27 EEST 2018
#5931: showwavespic, showspectrumpic innacurate length of resulting image
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Reporter: jonata | Owner:
Type: defect | Status: reopened
Priority: minor | Component: avfilter
Version: git-master | Resolution:
Keywords: showwavespic | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Changes (by keymapper):
* cc: marcel@… (added)
* status: closed => reopened
* resolution: wontfix =>
Comment:
Why was this set to 'wontfix'? I have been running into this issue a bunch
recently on the latest build (ffmpeg-20180619-a990184) and it is a pretty
nasty bug, making features that are 95% complete basically useless due to
unreliability/inaccuracy. PNGs end up with anywhere from 1 to 20 empty
pixels on the right and there's no way to know which empty pixels are due
to the bug and which are due to actual silence in the input audio. Does
anyone know any way to work around this bug, like if there is some magic
number for the .png dimensions that makes ffmpeg happy, or some way to
calculate how many of the blank pixels are erroneous (is it a function of
the length of the audio)?
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Ticket URL: <https://trac.ffmpeg.org/ticket/5931#comment:4>
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