[FFmpeg-trac] #1279(swscale:closed): Transform X'Y'Z' to RGB via colormatrix
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trac at avcodec.org
Mon Apr 29 12:46:31 CEST 2013
#1279: Transform X'Y'Z' to RGB via colormatrix
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Reporter: wolfgangw | Owner:
Type: enhancement | Status: closed
Priority: wish | Component: swscale
Version: git-master | Resolution: fixed
Keywords: XYZ j2k | Blocked By:
colormatrix | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
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Comment (by Buxiness):
Replying to [comment:24 wolfgangw]:
> Hm, it not only seems to accept X'Y'Z' but apparently it assumes X'Y'Z.
Which will make DCinema people happy (me happy :) and everyone else using
JPEG 2000 rather unhappy. The latter will get a color transform they did
not and would not ask for.
>
> It is not at all safe to assume X'Y'Z' in JPEG 2000 in general. There
needs to be a switch.
X'Y'Z' is only set in case of JPEG2000 dcinema profiles
>
> Also with git HEAD -lowres n nags about highest possible value 0 and
Nicolas just posted a patch to suppress the option entirely in
libavcodec/jpeg2000dec.c. What's the reasoning behind this?
Actually its not suppressed all all. but activated for ffmpeg and ffplay
you can use ffplay -lowres 3 path/to/j2k/MXF
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1279#comment:27>
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