[FFmpeg-trac] #10000(undetermined:open): PNG produced from BT.709 video should be tagged as gAMA 2.4

FFmpeg trac at avcodec.org
Sun Jun 25 03:21:12 EEST 2023


#10000: PNG produced from BT.709 video should be tagged as gAMA 2.4
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             Reporter:  Balling      |                    Owner:  (none)
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Balling):

 >I think I understand where the gamma 1.98 value is coming from.

 It is just BT.709 OETF.

 >I dont know what the right answer here is,

 EOTF for OETF BT.709 is 2.4 gamma only. It is clear as day, it should be
 2.4 gamma.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10000#comment:8>
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