hqdering based masktools2

function HQDering2(clip input, int "strength", int "overall", string "smoother", string "params") {
    strength = Default(strength, 255)#strength, 0 - 255
    overall = Default(overall, 0)#overall smoothing, 0 - 255
    smoother = Default(smoother, "Deen")#filter that smooths
    #params = default defined below # filter parameters - use Chr(34) for quotes

    defaultnull = Default(params, "")
    defaultdeen = Default(params, Chr(34) + "a3d" + Chr(34) + ", 4, 15, 15, 20")

    params = (smoother == "Deen") ? defaultdeen : defaultnull

    try {
        smoothedwparams = Eval(smoother + "(input, " + params + ")")
    } catch (err_msg) {
        smoothedwoparams = Eval(smoother + "(input)")
    }

    smoothed = (params == "") ? smoothedwoparams : smoothedwparams

    input.mt_edge("sobel",3, 255, 255, 255, Y = 3, V = 1, U = 1)  .mt_inflate
    normalmask = last

    normalmask.Levels(0, 3.3, 90, 0, 255).Blur(1.0)
    amplifiedmask = last

    normalmask.mt_Inflate().mt_Inflate().mt_Inflate().Levels(0, 3.3, 90, 0, 255).Blur(1.58).mt_Inflate().mt_Inflate().mt_Inflate().Levels(0, 3.3, 255, 0, 255).mt_Inflate().mt_Inflate()
    thickmask = last

    mt_logic(amplifiedmask.mt_Invert(),thickmask,mode="min")

    Levels(60, 3.0, 140, overall, strength).mt_deflate
    ringingmask = last
    mt_Merge(input, smoothed, ringingmask)
}