[FFmpeg-trac] #7115(undetermined:new): Image BECOMES darker unexpectedly

FFmpeg trac at avcodec.org
Fri Mar 30 18:32:08 EEST 2018

#7115: Image BECOMES darker unexpectedly
             Reporter:  testh001     |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  png mp4 raw  |               Blocked By:
  yuv420p rgb24 rgb32                |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
 Here is very simple demonstration of the bug:

 >> ffmpeg -hide_banner -i 1.png -y 1.mp4

 Input image "1.png":

 Output video "1.mp4" (has only one frame):

 Do you see what I am talking about? Image is darker, colors were changed.
 I tried to set different pixel formats, to set different presets, to
 change quality, bitrate, etc, but no matter what I try, the output is the

 When will this bug be fixed? Thanks.

Ticket URL: <https://trac.ffmpeg.org/ticket/7115>
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