[FFmpeg-trac] #7937(ffmpeg:new): no explanation of return value of ffmpeg

[FFmpeg]

#7937: no explanation of return value of ffmpeg
-------------------------------------+-------------------------------------
             Reporter:  sgerwk       |                     Type:  defect
               Status:  new          |                 Priority:  minor
            Component:  ffmpeg       |                  Version:  git-
             Keywords:  return       |  master
  value, kill, sigterm, sigint       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 I cannot find a description of the return value of ffmpeg in the man pages
 ffmpeg.1 and ffmpeg-all.1. As far as I can see, this may be 0=everything
 fine, 1=error of some kind, 255=killed (SIGINT or SIGTERM). Maybe there
 are other possible return values.

 How to reproduce:
 {{{
 % ffmpeg -i input output
 % killall ffmpeg
 ffmpeg version 4.1.git Copyright (c) 2000-2019 the FFmpeg developers
 built with gcc 8.3.0 (GCC)
 configuration: --enable-shared --enable-libdrm --enable-libopencore-amrnb
 --enable-version3 --enable-libvpx --enable-libcaca --enable-libvorbis
 --enable-gpl --enable-libxcb --enable-openssl --enable-nonfree --enable-
 libmp3lame --enable-libxml2
 libavutil      56. 28.100 / 56. 22.100
 libavcodec     58. 52.102 / 58. 35.100
 libavformat    58. 27.103 / 58. 20.100
 libavdevice    58.  7.100 / 58.  5.100
 libavfilter     7. 55.100 /  7. 40.101
 libswscale      5.  4.101 /  5.  3.100
 libswresample   3.  4.100 /  3.  3.100
 libpostproc    55.  4.100 / 55.  3.100

 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7937>
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