.t ihtxcusf 10 0.36 -vf "curves=b=0/1 1/0","curves=all=0/0 0.5/0.875 1/1",negate -filter_complex "[0:a]rubberband=formant=712923000:pitch=2^(-5/12)[a1];[0:a]rubberband=formant=712923000:pitch=2^(0/12)[a2];[0:a]rubberband=formant=712923000:pitch=2^(4/12)[a3];[a1][a2][a3]amix=3,volume=3,atrim=0.02[outa]" -map 0:v -map "[outa]"
