Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
get ffmpeg to generate an animation of the frequencies of an audio file on top of a static image, useful for podcasts and such
ffmpeg -i test.wav -y -loop 1 -i bg.jpg -filter_complex \
"[0:a]showfreqs=cmode=separate:mode=bar:ascale=cbrt:fscale=log:s=600x600:colors=#ffffff[tmp]; \
[tmp]alphaextract,format=yuv420p,split=3[box][up][down]; \
[up]crop=in_w:in_h/2:0:0[up]; \
[down]crop=in_w:in_h/2:0:in_h/2,vflip[down];[up][down]vstack[tmp]; \
[tmp]gblur=sigma=10,curves=master='0/0 0.49/0 0.51/1 1/1',format=rgba[tmp]; \
[box]drawbox=w=600:h=600:c=#ffffff:t=fill:replace=1,format=rgba[box]; \
[box][tmp]alphamerge[tmp]; \
[tmp]crop=in_w:in_h/2:0:in_h/4[tmp]; \
[1:v]scale=1280:-1,crop=in_w:720[bg]; \
[bg][tmp]overlay=x=50:y=50:shortest=1:format=auto,format=yuv420p[out]" \
-map "[out]" -map 0:a -c:v libx264 -preset fast test.mp4
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment