[MacPorts] #57580: mpv @0.29.1_0: revbump needed for ffmpeg update

[MacPorts]

#57580: mpv @0.29.1_0: revbump needed for ffmpeg update
----------------------+--------------------
 Reporter:  mopihopi  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  mpv
----------------------+--------------------
 After upgrading ffmpeg, running mpv displays the following error and
 refuses to run:
 {{{
 ffmpeg library versions:
    libavutil       56.14.100 (runtime 56.22.100)
    libavcodec      58.18.100 (runtime 58.35.100)
    libavformat     58.12.100 (runtime 58.20.100)
    libswscale      5.1.100 (runtime 5.3.100)
    libavfilter     7.16.100 (runtime 7.40.101)
    libswresample   3.1.100 (runtime 3.3.100)
 ffmpeg version: 4.1

 mpv was compiled against a different version of FFmpeg/Libav than the
 shared
 library it is linked against. This is most likely a broken build and could
 result in misbehavior and crashes.

 mpv does not support this configuration and will not run - rebuild mpv
 instead.
 }}}

 This occurs with the latest mpv binary from MacPorts.  After forcing mpv
 to be rebuilt from source it works.

 macOS 10.12.6 16G1510
 Xcode 9.2 9C40b

-- 
Ticket URL: <https://trac.macports.org/ticket/57580>
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