Created
April 18, 2020 23:37
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FFMPEG code for Spectral Frequency Display using showcqt (logarithmic frequency spectrum) + showspectrum (audio frequency spectrum) + showwaves
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| ffmpeg -i coltrane.wav -filter_complex "[0:a]showcqt=s=640x518:fps=30:axis=0,colorchannelmixer=.769:.393:.189:.349:0:.686:.168:0:.272:.534:.131,hue=n*2,pad=1280:720[vs]; [0:a]showspectrum=mode=separate:color=fiery:scale=log:orientation=vertical:overlap=1:slide=scroll:s=640x518[ss]; [0:a]showwaves=s=1280x202:mode=cline:scale=cbrt:colors=#FF8300[sw]; [vs][ss]overlay=w[bg]; [bg][sw]overlay=0:H-h[out]" -map "[out]" -map 0:a coltrane-output.mov |
Here's a couple of videos demonstrating what this produces:
https://twitter.com/kentbye/status/1251659988264574976
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This is a modified version of ffmpeg code that I originally found here: https://pastebin.com/uVNvLjKh