1080i vs 1080p

Discussion in 'Displays' started by Stefan_H, Sep 7, 2005.

  1. Stefan_H

    Stefan_H Auditioning

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    Hello how are you?
    I understand that HDTV is 1080i and the new HD DVDs or Blueray dvds will use a 1080p signal.
    Is it hard to find a projector that can play this signal, or is it worth worrying about having?
    Thanks
    Stefan
     
  2. John S

    John S Producer

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    To scale is to digital HDTV. I am sure even 720p displays will display 1080p content wonderfully.

    It is worth worring about though, more resolution on a digital panel is a darn good thing in my opinion, even though I am a firm believer that even 480p panels are quite good and respectable displays for any HD content.

    1080p projectors are still expensive even though the RP models are actually a little less expensive than I expected.
     
  3. John S

    John S Producer

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    PS: When talking digital displays there is no Interlaced, so your really talking about the difference between a 720p display and a 1080p display.
     
  4. Allan Jayne

    Allan Jayne Cinematographer

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    1080i versus 1080p may refer to the formatting of the source material as opposed to the formatting of the video signal.

    The existing ATSC HDTV standards already have [email protected](fps) and [email protected] I doubt that the new 1080p DVD will provide [email protected] which is twice the data rate as the preceding.

    If the player were to output a [email protected] video signal using [email protected] material the player would simply output each frame twice. For [email protected] source the player would generate 3-2 pulldown on [email protected] output as well as on 1080i(@30) output.

    We might notice that [email protected] consumes less storage space than 1080i.

    There are economy, good, better, and best ways of displaying 1080i on a 720p TV (or vice versa). Economy ways provide no more than 540 lines of vertical resolution on the screen. The best ways require motion adaptive de-interlacing with 3-2 pulldown recognition and retention.

    Video hints:
    http://members.aol.com/ajaynejr/video.htm
     

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