[FFmpeg-trac] #9271(avdevice:open): Get color information from source device

FFmpeg trac at avcodec.org
Tue Jun 1 16:59:57 EEST 2021


#9271: Get color information from source device
-------------------------------------+-------------------------------------
             Reporter:  Diederick    |                    Owner:  (none)
  Niehorster                         |
                 Type:  enhancement  |                   Status:  open
             Priority:  normal       |                Component:  avdevice
              Version:  git-master   |               Resolution:
             Keywords:  dshow        |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 "one unknown to me there, DV PAL, which is horizontally and vertically
 cosited"

 But that is what is used HDR too in HEVC spec for BT.2100 and is used on
 all HDR Blu-rays. It is signalled like this all over our codebase.
 https://github.com/FFmpeg/FFmpeg/blob/bc70684e74a185d7b80c8b80bdedda659cb581b8/libavutil/pixfmt.h#L599

 >But lets assume the docs are wrong on that point too, besides what you
 pointed out?

 Yes, the reference on that ITU-T H.273, or ISO/IEC 23091-2:2019 spec that
 is freely available from iso.com:
 https://standards.iso.org/ittf/PubliclyAvailableStandards/index.html
 Yes, looking into them they really mixed up those. Sigh. I will ipen pull
 request against Micro repo on github.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9271#comment:5>
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