DFMDerainBow5

#
# Last updated 28/01/2015
# modified from http://avisynth.nl/index.php/DFMDeRainbow
#
###################
#
# By Scintilla, with the third line of themask's definition
# borrowed from Shodan's derainbower
#
###################
#
# Syntax:
# DFMDeRainbow(clip org, int "maskthresh", bool "mask")
#
# Requires YV12 input.  Is kinda slow.
# Suggestions for improvement welcome: scintilla@aquilinestudios.org
#
# Required plugins:
# MSharpen, MaskTools2, FluxSmooth, Deen
#
# Arguments:
# maskthresh (default=10) - This is MSharpen's threshold value.
#	Lower values will increase the area in which the blurred chroma
#	is allowed to come through, which catches more edges but may
#	cause desaturation and/or chroma bleeding.
#	Set this as high as you can while still catching all the edges
#	that need to be derainbowed.
# mask (default=false) - When true, this displays the mask instead of
#	the image.  Use this to find the optimal value of maskthresh.
#
###################

function DFMDeRainbow5(clip org, int "maskthresh", bool "mask", bool "interlaced")
{
Assert(org.IsYV12(),"DFMDeRainbow: YV12 input only")

maskthresh = default(maskthresh, 10)
mask       = default(mask, false)
interlaced = default(interlaced, false)

org = interlaced==true? org.separatefields() : org

org_u=org.UtoY()
org_v=org.VtoY()

first_u=org_u.Flux5framesT(17).Blur(1.5)
first_v=org_v.Flux5framesT(17).Blur(1.5)

themask=subtract(org,YtoUV(first_u,first_v,org)).Levels(108,1,148,0,255)
	\ .MSharpen(mask=true,threshold=maskthresh).Invert()
	\ .Blur(0.5).Levels(0,2,255,0,255).Blur(0.5)

fixed_u=org_u.FluxSmoothST(17,14).Flux5framesT(17).Deen("a2d",4,14,14).Blur(1.0)
fixed_v=org_v.FluxSmoothST(17,14).Flux5framesT(17).Deen("a2d",4,14,14).Blur(1.0)
fixed=YtoUV(fixed_u,fixed_v,org)

output=mt_Merge(fixed,org,themask,y=2,u=3,v=3)

show = mask==true? themask : interlaced==true? output.weave() : output

return show
}