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FFmpeg Audio Spectrum
# Make sure you have ffmpeg installed (eg. brew install ffmpeg)
ffmpeg -i "your-audio-file.wav" -filter_complex "asplit[main][tmp]; [tmp]aformat=channel_layouts=mono,aresample=32000 [cut]; [cut]showfreqs=mode=bar:ascale=sqrt:win_size=2048:s=1920x240:colors=White[out]; [out]split[top][bottom]; [bottom]vflip[bottom]; [top][bottom]vstack=inputs=2[combined]" -map "[combined]" -pix_fmt yuv420p -map "[main]" -preset ultrafast output.mp4
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