[FFmpeg-trac] #2139(avformat:open): Crash on invalid command-line

[FFmpeg]

#2139: Crash on invalid command-line
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             Reporter:  cehoyos      |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  crash        |               Blocked By:
  SIGSEGV                            |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
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Comment (by pk_hariprasad):

 I have attached a file 2139.patch. Basic idea of the fix is since "concat"
 protocol operates only on input files, any output filename having
 "concat:" will be modified to replace ':' with '_'. Tested and verified to
 be working fine for the command ./ffmpeg_g -i tests/lena.pnm
 concat:out.bmp

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2139#comment:4>
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