[FFmpeg-trac] #8298(avfilter:open): Palette not propagated by vf_shuffleplanes (was: Segmentation fault in av_crc at libavutil/crc.c:403)

FFmpeg trac at avcodec.org
Fri Oct 18 23:48:38 EEST 2019

#8298: Palette not propagated by vf_shuffleplanes
             Reporter:  Suhwan      |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  important   |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
Changes (by jamrial):

 * status:  new => open
 * component:  undetermined => avfilter


 The problem is not in av_crc, but in shuffleplanes. It's not propagating
 the palette plane despite being a pal8 stream.

 ./ffmpeg -i PoC_seg_crc_403.tga -vf shuffleplanes,showpalette -f null -
 ./ffmpeg -i PoC_seg_crc_403.tga -vf shuffleplanes -f apng -y /dev/null

 All fail the same way, trying to access AVFrame->data[1], which is NULL.

Ticket URL: <https://trac.ffmpeg.org/ticket/8298#comment:1>
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