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  1. #1

    HDR vs HDR, and the old PS4 getting "HDR"

    "HDR" isn't just one cohesive thing, which is why this is confusing. Games as early as Half Life 2 Lost Coast showed HDR on standard CRT monitors. It would shift colour palates based on light and dark areas, though the monitor could not display more colours at once.

  2. #2
    Remember me?
    Nvidia summarizes the motivation for HDR in three points: bright things can be really bright, dark things can be really dark, and details can be seen in both.
    However, all the newfangled talk on HDR is about the new TV spec, which supports more onscreen colours in a single pass with the new Rec. 2020 color space
    So, not the same thing...A software effect to punctuate darks and lights vs an all new colour space which requires HDMI and GPU hardware support.
    So if Sonys claim is about software, it's...Cool? But not to be confused with an all new expanded colour space, as HDMI 1.4 just can't do that.

  3. #3
    How it works for the original PS4 is still a mystery, and so far there’s no media contents or games using HDR on it.

  4. #4
    HDMI 1.4 has enough bandwidth to transport the video-signal + additional metadata for 12 bit color depth and HDR at 1080p. Deep Color (10, 12 or 16 bit per channel) already came with HDMI 1.3 and the metadata channel they use for HDR10 in HDMI 2.0a was already introduced with HDMI 1.4.
    So it could be, that Sony just transmits HDMI 2.0a formatted data over a HDMI 1.4 hardware connection.

  5. #5
    If the developers were not total standard-Nazis most likely yes. Implementations are often way more relaxed than the standard definitions. In the end those devices negotiate many different aspects of a transmission step by step (resolution, frequency, bit depth, color space, HDCP level, audio stream capabilities and so on). There is no real reason to say no to a request to use for example the Rec. 2020 color space or to not use the HDR10 metadata if supported just because the connection is 1.4.

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