[FFmpeg-trac] #947(build system:new): In-progress builds should list their specific version when run

[FFmpeg]

#947: In-progress builds should list their specific version when run
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             Reporter:  dg1727       |                     Type:
               Status:  new          |  enhancement
            Component:  build        |                 Priority:  minor
  system                             |                  Version:  git-
             Keywords:               |  master
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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 Presently, if a development snapshot of the FFmpeg project is compiled by
 a user, the startup banner of ffmpeg and the other command-line tools
 lists a generic version such as "0.9.0.git".

 Is it possible to have this version automatically updated to show the
 exact location of the source code in Git?  This would apply not just for
 snapshots, but for any version that is compiled from Git without having an
 official version number.  For example, this might help in comparing the
 operation of 2 different builds of FFmpeg, such as in tracking down a
 regression window.

 The version string could indicate the date and time of the snapshot, and a
 further identifying code in case of multiple snapshots at the same date
 and time, similar to
 0.9.0.gitmaster20120101_140000.001
 (where 20120101 is the date, 140000 is the time, and 001 is a further
 identifying code).

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/947>
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