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  1. Hello,

    I have a video here which has some heavy ghosting:

    Image
    [Attachment 58577 - Click to enlarge]


    I already tried defreq in AviSynth but that didn't seem to improve anything.
    Also "Ghost remover" in VDub only improved it a little. Any ideas?

    Sample: Download
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  2. Member
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    Mar 2008
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    I don't think it's so much ghosting, it's just motion blur
    The main problem is those moire (or herringbone) diagonal interference lines.
    It might not look too bad if you can reduce those.

    Create an Avisynth script, deinterlace with QTGMC, use DeFreq Avisynth plugin for the interference, then some noise reduction
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  3. That's what I meant - those moiré lines. I already tried DeFreq but no matter what parameters I try out, it doesn't do anything noticeable at all.


    Image
    [Attachment 58584 - Click to enlarge]


    Code:
    FFVideoSource("example.mpg")
    AssumeTFF()
    ConvertToYV12(interlaced=true)
    SeparateFields()
    #Defreq(info=true)
    Defreq(fx=9.1,fy=-9.0, sharp=6.5)
    Weave()
    QTGMC(Preset="Fast", SourceMatch=3, Lossless=2, Sharpness=0.4)
    This is the code I was using for that frame.
    Last edited by phelissimo_; 26th Apr 2021 at 05:17.
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  4. defreq(fx=11.4, fy=-66.0, dx=2, dy=2, sharp=0, info=false, show=0)
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  5. Thanks, that works, but there is still some of that moiré pattern left.
    Image
    [Attachment 58594 - Click to enlarge]

    How can I remove that?
    NeatVideo v4 doesn't really work with it other than it destroys all the detail.
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  6. Following the first defreq with another, defreq(fx=11.4, fy=0.0, dx=1, dy=1, sharp=0, info=true, show=0), will reduce some of the vertical bars. But in some shots (with the cyan titles near the start of the clip) it makes them worse. You might be able to find a few more defreq settings to remove some more of the noise. Other noise reducers I tried obliterated too much detail when the settings were high enough to remove the noise.
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  7. I am not going to promise this, but I think trying santiag(nns=4) might help a bit with the leftover patterns you hate. I doubt it will 100% clean it, but I do think it will help a bit with visibility of it. Maybe give it a try at the bottom of your script.
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