[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:  acho at macports.org
      Type:  enhancement         |      Status:  new              
  Priority:  Normal              |   Milestone:  Port Enhancements
 Component:  ports               |     Version:  1.6.0            
Resolution:                      |    Keywords:  ffmpeg           
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Comment (by dersh at alum.mit.edu):

 On my local copy I made a change to the port to get rid of --disable-
 vhook.  It now does build with vhooks, and it also builds the vhook
 examples (it may have been doing this already, but I had not looked in the
 right place?).
 I tested a few of the examples and they do work.  Except for ppm, which is
 the one that would be most useful.  I did install netpbm.  I did dig into
 the ppm.c example code enough to see that it just forks and opens pipes to
 another application.  But it seems that the return data never arrives.  So
 ffmpeg with -vhook '/opt/local/lib/vhook/ppm.dylib just hangs.  I even
 tried a trivial example:
 -vhook '/opt/local/lib/vhook/ppm.dylib cat' and it just hangs.
 So it seems that there is a bug in ppm.c on the mac.
 I do realize that vhook is not listed as deprecated for ffmpeg, but at the
 same time the new libavfilter that is supposed to replace it seems not yet
 to be working either.  So vhook is probably the best thing for now.

-- 
Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/14234#comment:2>
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