[MacPorts] #68747: ffmpeg @4.4.4_3 fails to build

[MacPorts]

#68747: ffmpeg @4.4.4_3 fails to build
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  Reporter:  gwright83  |      Owner:  mascguy
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  ffmpeg     |
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Comment (by astroboylrx):

 Replying to [comment:4 maxcrees]:
 > The upstream diff linked in the original description does not apply
 cleanly to 4.4.4_3 sources. I've attached a backported patch which allows
 the port to build.

 Do you mind explaining how one may use this patch to build a port? Or
 giving a link to an example? Thank you very much in advance!!

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Ticket URL: <https://trac.macports.org/ticket/68747#comment:7>
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