[FFmpeg-trac] #225(undetermined:open): Converting from YUVJ to YUV lose contrast
FFmpeg
trac at avcodec.org
Fri May 20 20:25:25 CEST 2011
#225: Converting from YUVJ to YUV lose contrast
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Reporter: sghpunk | Owner:
Type: defect | Status: open
Priority: normal | Component: undetermined
Version: git-master | Resolution:
Keywords: YUV/YUVJ contrast | Blocked By:
Blocking: | Reproduced: 0
Analyzed: 0 |
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Comment (by cehoyos):
I am unable to reproduce your problem:
I extracted the jpeg's from your input file (ffmpeg -i yuvj_input.mkv
-vcodec copy out%03d.jpg), converted the result to different formats
(ffmpeg -i out001.jpg -qscale 2 out.avi and ffmpeg -i out001.jpg out.png),
but the images all look very similar to me.
What software are you using to display the videos (or how do you know the
contrast is different?
Can you also reproduce the problem with ffplay out001.jpg (and with ffplay
yuvj_input.mkv)?
Concerning your compilation: I believe your extra-cflags affect the
performance of the resulting binary negatively, if this is wrong, please
report it, so we can fix the build process.
--
Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/225#comment:5>
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