Screen size right for HDTV, wrong for DVD!

Discussion in 'Displays' started by EricThorsen, Jul 5, 2004.

  1. EricThorsen

    EricThorsen Auditioning

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    I installed a projector for my cable HD box and ran my DVD to it as well, via Component video. The problem I have is that the HD looks great, and fills up the entire screen. Any Non-HD signal through cable fills the middle of the screen, with two black boxes on the edges.
    So far, no problem.
    The problem is when I run a DVD-widescreen through the system. It has the 16:9 aspect ratio, but it is formatted to fit within the larger 4:3 ratio, which winds up on my screen with about 2 feet of space around the entire image.
    It appears to me that the HD signal is truly 1080, while the DVD signal is a subset of the 480 size.
    Can anybody help me with this?

    Here is an image - be sure you are looking in monotype font to appreciate:

    +--------------------------------+
    | HD image Size |
    | |===================| |
    | | | |
    | | DVD Image size | |
    | | | |
    | |===================| |
    | | Non-HD Cable Img | |
    +--------------------------------+

    THanks for any help!
    best regards,
    Eric
     
  2. NickSo

    NickSo Producer

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    use the [ code ] [/ code ] tags (no spaces) to display your ASCIi properly.

    Does this happen with some widescreen DVDs or ALL DVDs? It sounds like a typical problem with non-anamorphic DVDs (ie not 'enhaned for widescreen TV' DVDs)
     
  3. Michael TLV

    Michael TLV THX Video Instructor/Calibrator

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    Greetings

    Some projectors have a mode called natural ... where they show the DVD pixel for pixel and no scaling. A 720x480 pixel array fits into this image area you are drawing ...

    Regards
     
  4. EricThorsen

    EricThorsen Auditioning

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    This is for all DVDs. And I have checked the configuration settings on my DVD player (SONY dvp-s530d) and my projector (Viewsonic PJ551). I cannot find any setting to configure as 'Natural'
    I think I need to learn more about the pixel arrangments. So far I only know that the standard 4:3 TV signal is 480, and teh HD is 1080. I'm afraid that by setting the size of my screen around the HD 1080 size, I will have this problem until I can find a DVD player that can "enlarge" the image.
    What happens on a plasma screen? Do both the HD image AND a wide-screen DVD image fill the 16:9 size?
    Thanks again for any help!
    Best regards,
    eric
     
  5. Mort Corey

    Mort Corey Supporting Actor

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    On my plasma display, HD input (depending on the source as some is broadcast 4:3) fills the display completely and anomorphic widescreen DVD's show very small black bars on the top and bottom. (If I understand your question)

    Mort
     
  6. RandyMathis

    RandyMathis Stunt Coordinator

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    It sounds like your DVD player is set up for 4X3.
     

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