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  1. Member
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    Aug 2013
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    I've encountered a few recordings with a very static picture due to the use of an indoor aerial, and would like to clean things up a bit. I've just attached a short random example.

    I've tried SMDegrain, and whilst it helps a little, there's still too much noise.
    Image Attached Files
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  2. Code:
    AVISource("Aerial Noise.avi")
    converttoYV12()
    knlmeansCL(d=10,s=8,h=10.0)
    smdegrain(tr=6,thsad=1000)
    knlmeansCL(d=10,s=8,h=10.0)
    Image
    [Attachment 68585 - Click to enlarge]


    But I would rather ditch this capture.
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  3. Member
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    Getting a 'There is no function named 'knlmeansCL' error, despite having put the 64-bit plugin in the correct folder.

    Impressive results. I will be ditching this capture, it's just a random snippet of no value.
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  4. Try the 32-bit plugin.
    Then, process it as interlaced or deinterlace it if the capture is interlaced . It didn't really matter for this poor source though.
    See here:
    https://forum.videohelp.com/threads/407943-Anyway-to-boost-contrast-without-clipping#post2675676
    Last edited by Sharc; 8th Jan 2023 at 03:17.
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  5. Neat was made for this kind of noise
    Image
    [Attachment 68587 - Click to enlarge]
    *** DIGITIZING VHS / ANALOG VIDEOS SINCE 2001**** GEAR: JVC HR-S7700MS, TOSHIBA V733EF AND MORE
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  6. Member
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    Originally Posted by Sharc View Post
    Try the 32-bit plugin.
    Then, process it as interlaced or deinterlace it if the capture is interlaced . It didn't really matter for this poor source though.
    See here:
    https://forum.videohelp.com/threads/407943-Anyway-to-boost-contrast-without-clipping#post2675676
    Thanks, i got the 64-bit plugin to work eventually. Yes i am deinterlacing all my clips anyway, so always apply after deinterlace for best results.

    Originally Posted by themaster1 View Post
    Neat was made for this kind of noise
    Image
    [Attachment 68587 - Click to enlarge]
    Wow that's even better. I wish i knew how to use Neat properly. So from what i gather, Neat works by fetching information from the previous and following 5 frames to reconstruct a better image? And can Neat do so whilst retaining detail and not let it be smeary? And does it work better on longer sources?
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  7. Neat looks nice. (Using HQ3D (or BM3D) with high strength + SMDegrain + DeSpot/Lossless + some sharpening returns similar results here)
    But I agree that proper recapturing would be the preferred approach.
    Last edited by Selur; 8th Jan 2023 at 06:25.
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  8. Member
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    May 2005
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    Australia-PAL Land
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    I wish i knew how to use Neat properly.
    I find the trick is to use an area of constant colour. In this case, I used the blue sky at frame 18 after deinterlacing with VDub's deinterlacer.

    You can also play around with the sliders to set the desired amount of NR; back it off if it's too plasticy.
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