[FFmpeg-trac] #8843(undetermined:open): concat Segmentation fault filter_complex

[FFmpeg]

#8843: concat Segmentation fault filter_complex
-------------------------------------+-------------------------------------
             Reporter:  dirvann      |                    Owner:  dirvann
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  crash        |               Blocked By:
  concat                             |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by Cigaes):

 Simplified command-line:

 {{{
 ./ffmpeg_g -loglevel verbose -i /tmp/vid1.mp4 -filter_complex "
 testsrc2=s=16x16:r=25:d=0.062 [v1] ;
 testsrc2=s=16x16:r=24:d=0.040 [v2] ;
 anullsrc , atrim=0:0.062 [a2] ;
 anullsrc , atrim=0:0.040 [a3] ;
 [0:a]atrim=9.960:10.022 , asetpts=PTS-STARTPTS[a1] ;
 [a1][a2]amix=inputs=2[Seq1_out_a] ;
 [v1][Seq1_out_a][v2][a3]concat=n=2:v=1:a=1[vid][aud]" -map "[vid]" -map
 "[aud]
 " -f null -
 }}}

 Removing input from the file or amix make the bug disappear.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8843#comment:11>
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