I am running these two command and getting surprising result on the second one.
The first command produce (fscale=lin):
ffmpeg -i stereo-test.mp3 -lavfi showspectrumpic=s=600x600:mode=separate:fscale=lin:scale=log spect_lin.bmp
but the second command produce (fscale=log):
ffmpeg -i stereo-test.mp3 -lavfi showspectrumpic=s=600x600:mode=separate:fscale=log:scale=log spect_log.bmp
Sadly on the second image, the right channel is missing and I cannot figure out why. Any idea or suggestion would be awesome :)
Thanks !
PS: You can find my test file here: stereo-test.mp3
I am using: ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
EDIT: does not work using ffmpeg version 4.3.1-4ubuntu1 Copyright (c) 2000-2020 the FFmpeg developers too.