VHSHaloremover

# VHSHaloremover http://forum.doom9.org/showpost.php?p=1758184&postcount=14
Function VHSHaloremover(clip input, int "xradius", int "yradius", int "darkthr", int "brightthr", float "blurmix")
{
input
h   = Height ()
w   = Width ()
xradius = Default(xradius, 8)
yradius = Default(yradius, 1)
darkthr = Default(darkthr, 122)
brightthr = Default(brightthr, 134)
blurmix = Default(blurmix, 0.8)
cy  = BicubicResize (w / xradius, h / yradius, 1, 0).BicubicResize (w, h, 1, 0)
cmd = mt_makediff (cy)
cm  = cmd.mt_lut ("x "+String(brightthr)+" > 255 x "+String(darkthr)+" < 255 0 ? ?")
cr  = last.Merge (cy, blurmix)
mt_merge (last, cr, cm, y=3, u=2, v=2)
}