Black and White Video displays as All White with WinTV-Go Card

Discussion in 'Amateur Video Production' started by Don Enderton, Feb 22, 2004.

  1. Don Enderton

    Don Enderton Guest

    I'm trying to capture/view/record a black and white (no color) videotape,
    using the Hauppauge WinTV-Go 878 chip based card.

    The composite out of the VCR is connected to the composite in of the card,
    and the software is set to select the composite input of the card. The
    audio out of the VCR is connected to the line input of my sound card.
    Everything works, except...

    When the video signal from the VCR first is detected by the card, the image
    quickly becomes brighter all over, so that the picture is all white - that
    is, appears washed out. Adjusting the card's software to reduce brightness,
    saturation, or contrast is to no avail. No discernable picture detail is
    available, except enough noise near the borders to show the video is indeed
    received and detected by the card.

    I must add that this problem occurs only with one tape, one which is a dub
    from an old Sony portable black and white reel to reel video recorder used
    in the 1970s. The problem does not occur using any video recorded off the
    air from a TV broadcast signal, nor with video dubbed from newer camcorders.

    Sound is fine.

    I've noticed a similar effect with the Hauppauge card when its software is
    first started, while it is set to its own TV tuner, but in that case,
    although there at first is a rapid blooming to brightness, some sort of
    automatic adjustment kicks in and restores the TV picture to normal
    saturation and brightness and contrast and gamma or whatever - that is, the
    picture, within a second or less, is stabilized and normal.

    But, as I said, when the same "blooming" happens at the outset of viewing,
    or attempting to view, this particular videotape, what I call the blooming
    is permanent - it is not rectified as with the card's own tuner. Most of
    the picture is a very uniform, very bright, white.

    Other tapes, which were recorded off TV, whether color or B&W, work OK from
    the VCR to this card.

    Just not this one B&W tape, which is a dub from a recording made on an old
    portable Sony reel to reel recorder in the early 1970s. This dubbed B&W
    tape plays just fine when the VCR output is connected to a TV; it just won't
    display using the Hauppauge 878 chip card. It could be this one tape lacks
    some color signal or something the card is looking for and not finding.

    Is there a software setting, or are there different drivers, I can change
    or use that will make this material visible, so I can record it?

    Or do I need to try different hardware - i.e. a different capture card?

    Please don't tell me the problem is with the source tape - after all, it
    displays fine on any TV monitor.
     
    Don Enderton, Feb 22, 2004
    #1
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  2. It still might be the source tape, so I really can't obey your
    request :)

    But I can suggest this: make a VHS copy of the tape and try to
    capture that. It's a bit of a pain, but if it works you'll be
    smiling...

    My idea is that since it plays OK on TV, it just might record OK on
    a VCR.

    Gino
     
    Gene E. Bloch, Feb 22, 2004
    #2
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  3. Don Enderton

    Don Enderton Guest

    Thanks, Gino, but I already have a VHS copy of the tape. Same thing
    happens. I forgot to mention that.

    If it is the source tape, I wonder what about the source tape is the
    problem. If I knew that, maybe I could modify it in some way next time I
    make a copy.

    Thanks for reading this, Gino.

    Anyone else have any ideas?

    - Don
     
    Don Enderton, Feb 22, 2004
    #3
  4. Timebase Corrector (TBC) and particularly
    a video ProcAmp, a waveform monitor and
    an operator who knows how to use them.
     
    Richard Crowley, Feb 22, 2004
    #4
  5. Don Enderton

    Don Enderton Guest

    Thanks, Richard. Where would I find those things? I'm in Sacramento,
    California, USA.

    - Don
     
    Don Enderton, Feb 22, 2004
    #5
  6. "Don Enderton" wrote ...
    There's probably at least a dozen places in SAC that
    can do video dubs with TBC, ProcAmp, professional
    video signal adjustment for you. Likely not practical
    to buy (or even rent) >$1000 worth of equipment for
    just one or two dubs.
     
    Richard Crowley, Feb 22, 2004
    #6
  7. Don Enderton

    Bariloche Guest

    The DC10 card has an AGC setting. Does the Hauppage have the same?
     
    Bariloche, Feb 25, 2004
    #7
  8. Don Enderton

    Don Enderton Guest

    AGC is not manually adjustable on my Hauppauge card, according to Hauppauge
    tech support.

    - Don
     
    Don Enderton, Feb 26, 2004
    #8
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