#8911: showspectrumpic innacurate zoom of resulting image with stop and size
options
-------------------------------------+-------------------------------------
Reporter: semiaddict | Type: defect
Status: new | Priority: normal
Component: avfilter | Version: git-
Keywords: | master
showspectrumpic stop zoom | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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'''Summary of the bug:'''
When using the [https://ffmpeg.org/ffmpeg-filters.html#showspectrumpic
showspectrumpic] filter with a value for the ''stop'' option along with a
''size'', the resulting image seems to always stop at a much lower
frequency than the one specified.
The legend on the top right corner (Zoom: ...) is, however, correct.
This doesn't seem to be the case if the ''size'' option is not specified,
and the issue seems to occur whether or not the ''legend'' option is
active.
'''
How to reproduce:'''
{{{
ffmpeg -i http://commondatastorage.googleapis.com/gtv-videos-
bucket/sample/BigBuckBunny.mp4 -filter_complex
showspectrumpic=stop=5000:size=1024x768:legend=1 output.png
}}}
ffmpeg version 4.3
built on commit a3a6b56
This was tested on multiple files including
http://commondatastorage.googleapis.com/gtv-videos-
bucket/sample/BigBuckBunny.mp4
--
Ticket URL: <https://trac.ffmpeg.org/ticket/8911>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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