[FFmpeg-trac] #11238(undetermined:new): -color_trc and -color_primaries flags don't work

FFmpeg trac at avcodec.org
Tue Nov 12 21:23:47 EET 2024


#11238: -color_trc and -color_primaries flags don't work
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             Reporter:  owztue       |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Aras Pranckevicius):

 This change (regression?) probably breaks many expectations and
 scripts/pipelines that people might have.

 E.g. ffmpeg's own wiki says "On ffmpeg command-line this is what options
 such as colorspace and color_trc do; you can also put them on the output
 side to modify what space the output is in"
 (https://trac.ffmpeg.org/wiki/colorspace), but apparently now on the
 "output side" they do nothing at all.

 Likewise, Academy Sofware Foundation "encoding guidelines" page
 (https://academysoftwarefoundation.github.io/EncodingGuidelines/Quickstart.html)
 in all the ffmpeg command line examples puts color_trc and color_primaries
 on the output side. I've spent quite some hours yesterday puzzled why
 examples there do not work properly, before thinking of "let's try ffmpeg
 6.0 instead of 7.1"
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11238#comment:4>
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