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S-video Video Capture Problems

Discussion in 'Cables & Switches' started by sgbeattie, Jun 1, 2005.

  1. sgbeattie

    sgbeattie
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    Dear AVForum,

    Can someone help me?
    I used to capture video from my VCR to my PC using my TV-Card.
    I used a scart selector box with an s-video socket, an s-video lead connected to the s-video in on my pc.

    Everything worked well until now. I can only get a black and white picture, yet before it was in colour.

    I have reverted to using a composite out to s-video converter in on the pc.

    I don't notice any significant reduction in picture quality but I have read everywhere that s-video is FAR SUPERIOR to component.

    Does anyone have any advice.

    Thank you in advance
     
  2. DragonQ

    DragonQ
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    Correction: S-Video is FAR superior to Composite (I'll assume that was a mistake).

    I tried doing this once:

    VCR -> Scart/S-Video Adapter -> S-Video Socket on PC

    It gave me fuzzy lines. I used a Scart/Composite adapter instead, and the fuzzy lines were gone. I THINK it is only possible to do S-Video -> Scart (as long as the socket can accept S-Video through Scart), but it is not possible to go from RGB Scart -> S-Video.
     
  3. MarkE19

    MarkE19
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    A standard VHS VCR does not output an S-Video signal. therefore useing an S-Video lead will not give any picture improvements over composite. A VHS VCR only outputs composite video, but an SVHS VCR will output S-Video and composite.
    If you feed an S-Video input with a composite signal the colour information will be ignored on the composite pin and therefore give an B&W picture. A S-Video lead carries the luminence (B&W picture) on one pin and Chrominence (colour) on another. The S-Video input would not be able to use the combined luminence & chrominence, so as stated will only see the luminence and hence the fact that you get a B&W picture as all the colour information is ignored.


    Mark.
     

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