Why so few sets capable of 24p?

Discussion in 'Displays' started by Brian W., Nov 12, 2007.

  1. Brian W.

    Brian W. Screenwriter

    Jul 29, 1999
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    Los Angeles
    Real Name:
    Even the new batch of HDTVs, very few of them seem to have 24p capability, at least as I see listed in the specs. Sony seems to be an exception. Why is this?

    EDIT: I will say I see "24hz" on a lot of them. Is that the same thing?
  2. Patrick Sun

    Patrick Sun Moderator

    Jun 30, 1999
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    Yes. Same thing. You still need to mate that 24hz HDTV with a high-def player that is capable of outputting 1080p24hz, and choices in players with that capability are small at the moment, or require a firmware update for some of the players.
  3. Allan Jayne

    Allan Jayne Cinematographer

    Nov 1, 1998
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    24p (24 frames per second; 24 Hz) is a newcomer to the gamut of different video signal formats used to go between consumer video devices such as TV's and DVD players.

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

    Actually the TV still displays at 60 fps or thereabouts (e.g. 72 fps). Incoming 24 fps signals are converted using 3-2 pulldown etc. to match the display's frame rate.

    Also, 24 fps is not well suited for non-film sources and ideally the source device will switch back and forth as needed and the receiving device wil autoselect the frame rate each time it changes.

    In addition to the different "resolutions" 720p, 480p, etc. 24 fps comes in two distinct flavors, "psf" or "segmented frame" with assumable pre-matched interlacing fields, and "p" real progressive.

    24 fps progressive consumes less bandwidth and storage space than comparable 30 fps interlaced video. Since [email protected] won't be seen in HDTV broadcasts, [email protected] which is one of the ATSC HDTV formats, and which carries film source just as well as [email protected], will be seen more often in the future.
  4. ross ish

    ross ish Stunt Coordinator

    Nov 18, 2002
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    Although there seems to be an obvious advantage to not having to do the 3:2 pull down; there are a lot of good tvs out there that do an excellent job of 3:2 pull down making the 1080p24 moot; more of a marketing ploy like the 120mhz theme.

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