CC4

function cc4(clip y, float "Weight")

{

Weight=Default (Weight,.33)

y=y.converttoyv12().greyscale()

y.linearresize(280,280,linear=true,noring=true)

cmb2()

a1=last

a1

converttorgb()

r=ShowRed(pixel_type="RGB32")

g=ShowGreen(pixel_type="RGB32")

b1=ShowBlue(pixel_type="RGB32")

a=overlay(g,r,mode="exclusion").converttoyv24()

b=overlay(g,b1,mode="exclusion").converttoyv24()

c=overlay(merge(a,b),g.converttoyv24(),mode="exclusion").converttoyv24()



mergergb(a,c,b)

converttoyv12()

subtract(a1,last)

coloryuv(autowhite=true)

merge(a1.cmb2(),last)

tweak(sat=2.5,interp=32)

tweak(sat=1.25,maxsat=59.5,interp=32)

linearresize(width(y),height(y),linear=true,noring=true)

mergechroma(y,last,Weight)

}