[FFmpeg-trac] #9799(avfilter:open): Rotate filter to 16-bit per channel image causes false color

FFmpeg trac at avcodec.org
Fri Jun 3 18:09:07 EEST 2022


#9799: Rotate filter to 16-bit per channel image causes false color
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             Reporter:  hayamdk      |                    Owner:  (none)
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avfilter
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Changes (by Balling):

 * status:  new => open

Comment:

 Replying to [comment:5 Elon Musk]:
 > I get none of this, does this happens on windows only?
 > What you use to render tiff?

 In fact this happens on linux too and in fact the tiff file is bitperfect
 with windows :) sha256sum of the file itself is
 D0755FDC28347A1BF7354CFF1276227B82458F5D0B319A1E92784B9331D4D578
 and md5 of decoding raw rgb48le is b97e3124afd8ee85202af35833289d63.

 Same happens with debian default veiwer.

 May be a bug in gcc 11.2.0 and 11.3, that is a buggy piece of 💩💩:
 https://github.com/Beep6581/RawTherapee/issues/6384

 Try 12.1 gcc and -fno-tree-loop-vectorize.

 All tested on https://github.com/BtbN/FFmpeg-Builds
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9799#comment:7>
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