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Old 2nd November 2018, 11:12   #53537  |  Link
el Filou
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Quote:
Originally Posted by mclingo View Post
If I play an SDR movie which is native 2160p its fine so it seems to be the upscaling part which is confusing something in the driver / output chain. All 2160p HDR material is also unaffected.
What is the native colour space of SDR 2160p movies? BT.709 or DCI-P3/BT.2020?
Quote:
Originally Posted by huhn View Post
that's the core problem you are not supposed to need that.
Why not? Wouldn't UHDTV displays that conform to Rec.2020 expect the content to be in BT.2020 when the definition is 2160p SDR (Edit: https://en.wikipedia.org/wiki/Rec._2...em_colorimetry), just like HD displays expected BT.709 when being fed > 576p? Maybe the Radeon is enforcing the standard really hard? (Edit: i.e. indicating BT.2020 in the HDMI metadata when it's outputting 2160p even though madVR is sending BT.709?)
Just like 8-bit HDR or even 8-bit UHD, maybe BT.709 UHD is technically accepted by some displays but not following the standard and therefore not tested/considered by manufacturers?
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Last edited by el Filou; 2nd November 2018 at 11:15.
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