[FFmpeg-user] Waveform turns out grey

[Alexander Bieliaev]

I'm using this command to create a waveform:
 -i "input.wav" -filter_complex
"compand,showwavespic=s=905x56:colors=white" -frames:v 1 "waveform.png" -y
Most of the time it works just fine, but sometimes (especially when the
audio is long) it turns out grey (like the one attached) and I don't know
why.
Any idea on how to fix it?
[image: a6e21543-3909-46be-9cc6-320cd188cdd6.png]

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