[MacPorts] #53443: ffmpeg 3.2.x changed compatibility version?

[MacPorts]

#53443: ffmpeg 3.2.x changed compatibility version?
--------------------+--------------------
 Reporter:  RJVB    |      Owner:
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  ffmpeg
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 Apologies if this has already been reported/discussed:

 FFMpeg 3.2.2 is supposed to be ABI-compatible with earlier versions at
 least down to 3.1.4, but there's a caveat (seen on 10.9.5):

 {{{
 Incompatible library version: /opt/local/lib/mlt/libmltavformat.dylib
 requires version 6.0.0 or later, but /opt/local/lib/libavfilter.6.dylib
 provides version 0.0.0
 Incompatible library version: /opt/local/lib/mlt/libmltavformat.dylib
 requires version 57.0.0 or later, but /opt/local/lib/libavdevice.57.dylib
 provides version 0.0.0
 Incompatible library version: /opt/local/lib/mlt/libmltavformat.dylib
 requires version 4.0.0 or later, but /opt/local/lib/libswscale.4.dylib
 provides version 0.0.0
 Incompatible library version: /opt/local/lib/mlt/libmltavformat.dylib
 requires version 57.0.0 or later, but /opt/local/lib/libavformat.57.dylib
 provides version 0.0.0
 Incompatible library version: /opt/local/lib/mlt/libmltavformat.dylib
 requires version 55.0.0 or later, but /opt/local/lib/libavutil.55.dylib
 provides version 0.0.0
 Incompatible library version: /opt/local/lib/mlt/libmltavformat.dylib
 requires version 57.0.0 or later, but /opt/local/lib/libavcodec.57.dylib
 provides version 0.0.0
 }}}

 Not sure if that's really a "defect" but it does seem weird that the
 compatibility version regresses to 0.0.0 like that.

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Ticket URL: <https://trac.macports.org/ticket/53443>
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