[MacPorts] #36849: ffmpeg: fix dependencies, add dc1394 variant

[MacPorts]

#36849: ffmpeg: fix dependencies, add dc1394 variant
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  Reporter:  frederic.devernay@…  |      Owner:  devans@…
      Type:  enhancement          |     Status:  assigned
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:  2.1.2
Resolution:                       |   Keywords:
      Port:  ffmpeg               |
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Comment (by devans@…):

 r116084 ffmpeg, ffmpeg-devel

  * added dependency on libiconv (conversion of arbitrary charsets to UTF-8
 in subtitles, subtitle enabled codecs only)
  * added dependency on and enabled fontconfig (allows specifying fonts by
 name rather than by absolute file path in filter drawtext)
  * added +libdc1394 variant (allows IIDC-1394 frame grabbing from FireWire
 cameras)

 This final item is not well tested so I have marked it experimental. It is
 also completely [http://www.ffmpeg.org/ffmpeg-devices.html#libdc1394
 undocumented]. However, by analogy with other indevs, something like this
 should work:
 {{{
 # Grab and show video from FireWire Device

 ffplay -f libdc1394 -i auto

 # Grab and save to MPEG file

 ffmpeg -f libdc1394 -i auto firewire.mpg
 }}}

 I'll give a try this weekend and would be interested in your experience
 good or bad.

 However, I suggest we take that discussion to the
 [https://lists.macosforge.org/mailman/listinfo/macports-users macports-
 users email list] rather continue here.

-- 
Ticket URL: <https://trac.macports.org/ticket/36849#comment:6>
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