Help with skin shifting problem while watching DVD's

Discussion in 'Archived Threads 2001-2004' started by Andrew Beacom, Aug 7, 2001.

  1. Andrew Beacom

    Andrew Beacom Supporting Actor

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    Skin shifting is the best way I can use to describe what I have seen. The DVD's that I noticed it on were all rentals, Remember The Titans, The Green Mile and Save the Last Dance.
    It is most noticeable when watching african american actors like Denzel Washington. It almost seems like an after image and it looks like the actors skin isn't moving at the same ratio as their head.
    At first I wondered if it was watching the movies in the dark after calibrating my TV with natural light. But that theory was shot when my wife saw it on Save the Last Dance viewed during the day.
    I think that it is an issue with my TV's contrast and brightness controls. I calibrated with VE but the fact that it's mainly african american actors in dark scene's where light and shadow's around/on the face suggests this.
    The other possabilities that occur to me are dirt on the DVD's or my player. They were all rental's, but problems with all 3.
    The player is a new RP91 connected to my 32" direct view Panasonic with a cheap RS composite cable.
    Has anyone ever seen anything similar? Have I been able to explain my problem?
    TIA.
     
  2. John Miles

    John Miles Stunt Coordinator

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    Sounds like your sharpness control may be set a little too high.
     
  3. Andrew Beacom

    Andrew Beacom Supporting Actor

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    John,
    It's not sharpness as after calibrating with VE my sharpness is at 0. But thanks for reminding me to post my other settings.
    Color: 32/63
    Tint: 30/63
    Brightness : 38/63
    Contrast: 19/63
    Sharpness: 0
    My set has SVM on it which I can't disable but I don't think it's at the bottom of my skin shift problem.
     
  4. GregC

    GregC Stunt Coordinator

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    I think this is a "feature" of the Panasonic. I saw the RP-91 at a local HT B&M hooked up to two tvs, the new Panasonic 47" and the Pioneer 710. I noticed the same issue on both. The leaves on the background trees "broke up" as the camera panned. It looked "digital", not smooth and film-like at all. Very distracting and the reason I'm waiting for a better model to come along (DCDi?).
     
  5. Jeremy Anderson

    Jeremy Anderson Screenwriter

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  6. Michael Reuben

    Michael Reuben Studio Mogul

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  7. Andrew Beacom

    Andrew Beacom Supporting Actor

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    Someone I know suggested that I might be seeing motion artifacts and switching to a component cable was the way to go.
    I am looking at component cables but I was hoping to hold off until I have finished my RPTV shopping and know what distance I am working with.
    Getting back to motion artifacts. Being new to DVD I am not exactly sure what one is. Can anyone give me a good description or point out a DVD that exhibits them for me to watch?
     
  8. Michael Reuben

    Michael Reuben Studio Mogul

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  9. DanG

    DanG Stunt Coordinator

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  10. Eugene Hsieh

    Eugene Hsieh Supporting Actor

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    I dunno if this is your problem, but I find that MPEG artifacts in dark scenes/skin can be more obvious when the TV tint is pushed toward the green side.
    ------------------
    Eugene Hsieh, VisorCentral FAQ Editor
    1000 km on a tank of gas??? Check out the Prius and drive the future now!
     
  11. Andrew Beacom

    Andrew Beacom Supporting Actor

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    My TV does push Green by 5% which isn't a huge amount. I have an S-Video cable that I use for my SVHS VCR. I can swap this in for the composite cable and see if the problem still occurs.
    I guess I can't point at the DVD player until I have ruled out the cable as being the problem. The cable is the weakest link in the chain at the moment.
    It looks like I will need a 9ft component cable so I'll do something there soon. I really need to be watching in progressive mode to be able to judge the player and the shifting.
     
  12. Andrew Beacom

    Andrew Beacom Supporting Actor

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    Dan,
    I have an RS A/V cable that would work but it isn't one of the gold series. Would it be worth hooking it up as a component cable for a quick test? I'm assuming that even though it might give me a piss poor picture it shouldn't damage anything.
     
  13. DanG

    DanG Stunt Coordinator

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  14. Doug_B

    Doug_B Screenwriter

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  15. Andrew Beacom

    Andrew Beacom Supporting Actor

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    I'm planning on switching to the S-Video cable tonight. I actually notice the problem on several DVD's now I know what to look for.
    I haven't noticed it on animation/cartoon movies though.
     
  16. Andrew Beacom

    Andrew Beacom Supporting Actor

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    I swapped the S-video cable and watched a few movies and thought it looked much better. The cable I was using got swapped to my VCR and I can now see the skin shift problem on regular cable. It would appear that the cable is the culprit.
    What is interesting is that this composite cable was plugged into my VCR before I got the S-Video cable after joining this forum. When I put the S-Video cable in I didn't notice a huge difference but I left it in for the minor improvements I could detect. I now can't believe I watched TV like this at all.
    Either my eye has got better at detecting problems or with the addition of new equipment into my system there is some interference that wasn't present when I last used this cable.
    I never realised that interference showed up as a ghosting effect. I always thought interference was a signal related thing that led to picture noise (snow) or lines etc.
    If I need to change from S-Video back to composite on my VCR to use my new TV's line doubler a good quality (shielded) composite cable is obviously in order.
     

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