[FFmpeg-trac] #4363(undetermined:new): boxblur and png

[FFmpeg]

#4363: boxblur and png
-------------------------------------+-------------------------------------
             Reporter:  echo123      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  boxblur,     |               Blocked By:
  png                                |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug: boxblur filter and png input makes picture gray and
 colors half of the image black.
 How to reproduce:
 {{{
 % ffmpeg -i input.png -vf boxblur output
 ffmpeg version 2.6
 }}}
 The log looks as usual. There are [http://a.pomf.se/tkltkx.png original
 image] and [http://a.pomf.se/ygumme.png boxblurred image].

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Ticket URL: <https://trac.ffmpeg.org/ticket/4363>
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