W3C home > Mailing lists > Public > www-style@w3.org > January 2015

Re: Wide Color Gamut and High Dynamic Range displays

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Wed, 28 Jan 2015 13:13:33 -0800
Message-ID: <CAAWBYDArmK_387i=UFJerM0T-QvGhkyVa--mk_t0wV5E9b27XA@mail.gmail.com>
To: Rik Cabanier <cabanier@gmail.com>
Cc: Mark Watson <watsonm@netflix.com>, "www-style@w3.org" <www-style@w3.org>
On Wed, Jan 28, 2015 at 12:26 PM, Rik Cabanier <cabanier@gmail.com> wrote:
> On Wed, Jan 28, 2015 at 9:02 AM, Mark Watson <watsonm@netflix.com> wrote:
>> It would be nice to be able to detect whether the display has the
>> capability of rendering Wide Color Gamut and High Dynamic Range video.
>>
>> This is independent of codec support: in fact the video codec itself may
>> be unaware of the colorspace and dynamic range of the encoded video. It may
>> also be the case that the media pipeline in a device supports these things
>> but the presently connected display does not.
>>
>> For WGC, the basic question is whether the display can interpret data
>> coded in the BT.2020 or DCI P3 colorspaces (I say "interpret" deliberately,
>> because I'm unaware of any displays that can render the full BT.2020 space
>> yet.)
>>
>> Would it make sense to add attributes for these properties to the CSS OM
>> View Module ? Other suggestions ? Questions ?
>
> What are you planning on doing with that information?
> AFAIK it is defined that pages are composited in sRGB and then mapped to the
> monitor profile.

sRGB supports wide gamuts (at least theoretically). It's just outside
the standard gamut, but still representable.

> Would you use this to change color handling of a full-screen video?

You can send different sources to <video> based on a media query.

~TJ
Received on Wednesday, 28 January 2015 21:14:20 UTC

This archive was generated by hypermail 2.4.0 : Friday, 25 March 2022 10:08:50 UTC