[MacPorts] #14234: ffmpeg 0.4.9-pre1 R5 vhook variant

[MacPorts]

#14234: ffmpeg 0.4.9-pre1 R5 vhook variant
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 Reporter:  dersh at alum.mit.edu  |       Owner:  macports-tickets at lists.macosforge.org
     Type:  enhancement         |      Status:  new                                  
 Priority:  Normal              |   Milestone:  Port Enhancements                    
Component:  ports               |     Version:  1.6.0                                
 Keywords:  ffmpeg              |  
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 ffmpeg has an option to be built with vhooks that allow a video filter to
 be put in the video path between the input and the output.  I believe that
 by default it is enabled when the source is downloaded directly from the
 web.
 The macport version adds the flag: --disable-vhook so that this option is
 not included.
 My suggestion is to add a variant so that the user has the option of
 building +vhook which would disable this flag and additionally would build
 the few example files that are included in the basic download from the
 website in the folder vhooks.

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Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/14234>
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