[x264-devel] [PATCH] Adding code points for latest transfer characteristics

BugMaster BugMaster at narod.ru
Thu Jun 9 08:22:32 CEST 2016


On Wed, 8 Jun 2016 17:31:40 -0400, Vittorio Giovara wrote:
> On Wed, Jun 8, 2016 at 4:01 PM, BugMaster <BugMaster at narod.ru> wrote:
>> On Mon, 6 Jun 2016 09:34:20 -0700, Neil Birkbeck wrote:
>>> I see the 2016-02 draft posted now:
>>> http://www.itu.int/rec/T-REC-H.264-201602-I
>>> The codes for smpte-st-2084:16 and smpte-st-428:17 are there. The
>>> arib-std/hlg (18) is the latest assignment (appears in latest hevc
>>> spec), so I expect we'll see that in the next revision.
>>
>> Hi. Pushed to sandbox alternative patch with all new color primaries,
>> transfer characteristics and matrix coefficients defined in 2016-02
>> edition:
>> http://git.videolan.org/?p=x264/x264-sandbox.git;a=commit;h=a073b863d51355e039aa4f0a6d3db06d2449ef48
>> I tried to use identifiers more consistent with ones we already have.

> Hi, would it be possible to use the names that libavutil functions
> return for the new values?
> In this way it would be possible to call
> av_color_{primaries,transfer,space}_name() and use the values
> directly, as well as use {ff,av}probe json values without a conversion
> map.

> https://github.com/libav/libav/blob/master/libavutil/pixdesc.c#L1602-L1619

I really don't like this names because "ST" prefix is meaningless as all
SMPTE standards now have it and part suffix ("-?") is no need because
this stardards usualy have only one part that relevant for this image
characteristics (iec61966-2-1/iec61966-2-4 was exception).



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