Hello all, I am experimenting to the showspectrum filter. According to the example at http://www.ffmpeg.org/ffmpeg-filters.html#Examples-11:
> ffplay -f lavfi 'amovie=input.mp3, asplit [a][out1]; [a] > showspectrum=mode=separate:color=intensity:slide=1:scale=cbrt [out0]' but I cannot figure out how to output the showspectrum result to a saved video with ffmpeg command. When I adopt the ffplay command to ffmpeg: > ./ffmpeg -i Q-full-circle.mp3 -vf > showspectrum=mode=separate:color=intensity:slide=1:scale=cbrt -y > full-circle.avi the command executes without error, the video file gets generated, but no video is produced. Thanks in advance!
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