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  1. Member
    Join Date
    Apr 2018
    Location
    San Antonio, TX
    Search Comp PM
    Quite common on VHS video (I took this snippet of from a BBC documentary), but anyway to reduce or remove these rainbow horizontal lines?

    Screenshot:
    [IMG]blob:https://mega.nz/5ab03a62-1935-4023-81ba-4d8f356b1853[/IMG]

    Sample:
    https://mega.nz/#!GtsjnKbD!V48juaE9HDsW_nfT6VSh3xPYy9ys_V73Hi5RaztHLOs
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  2. try something like this:
    LWLibavVideoSource("sample.mp4")
    # remove chroma fluctuations
    ConvertToYV16(matrix="Rec601",interlaced=false)
    U = UToY().ttempsmooth(maxr=1,lthresh=150, strength=8)
    V=VToY().ttempsmooth(maxr=1,lthresh=150, strength=8)
    YToUV(U,V,last)
    ConverttoRGB32(matrix="rec601",interlaced=false)
    #### CCD COLOR DENOISING :
    LoadVirtualDubPlugin("C:\Program Files (x86)\virtualdubmod1.5\plugins\Camcorder_Color_Den oise_sse2.vdf", "CCD", 0)
    CCD(30,1)
    converttoyv12(matrix="Rec601",interlaced=false)
    mergechroma(last)
    fft3dfilter(bt=3,sigma=19,plane=3,degrid=1,bw=16, bh=16, ow=8, oh=8)
    fft3dfilter(bt=3,sigma=19,plane=3,degrid=1,bw=16, bh=16, ow=8, oh=8)
    mergeluma(last)
    Image Attached Thumbnails Click image for larger version

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    Click image for larger version

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    *** DIGITIZING VHS / ANALOG VIDEOS SINCE 2001**** GEAR: JVC HR-S7700MS, TOSHIBA V733EF AND MORE
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  3. Member
    Join Date
    May 2014
    Location
    Memphis TN, US
    Search PM
    Horizontal rainbows is all you're worried about?

    That's the least of your problems. Doesn't look like a piece of BBC to me. That mp4 is one ugly piece of work. You don't have a sample of the original capture?
    - My sister Ann's brother
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