[FFmpeg-trac] #6640(avformat:new): Assertion failed when stream copying gif

[FFmpeg]

#6640: Assertion failed when stream copying gif
-------------------------------------+-------------------------------------
               Reporter:  llogan     |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  important  |              Component:  avformat
                Version:  git-       |               Keywords:  crash abort
  master                             |  gif
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 {{{
 $ ./ffmpeg -f lavfi -i testsrc=d=1:r=10 out.gif
 $ ./ffmpeg -i out.gif -c copy out2.gif
 ffmpeg version N-87209-gf4e593f7b5 Copyright (c) 2000-2017 the FFmpeg
 developers
   built with gcc 7.1.1 (GCC) 20170630
   configuration:
   libavutil      55. 74.100 / 55. 74.100
   libavcodec     57.105.100 / 57.105.100
   libavformat    57. 81.100 / 57. 81.100
   libavdevice    57.  8.100 / 57.  8.100
   libavfilter     6.102.100 /  6.102.100
   libswscale      4.  7.103 /  4.  7.103
   libswresample   2.  8.100 /  2.  8.100
 Input #0, gif, from 'out.gif':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: gif, bgra, 320x240, 10 fps, 10 tbr, 100 tbn, 100
 tbc
 Assertion video_par->format == AV_PIX_FMT_PAL8 failed at
 libavformat/gif.c:130
 Aborted (core dumped)
 }}}

 Unknown if it is a regression.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6640>
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