[MacPorts] #36705: youtube-dl should have ffmpeg as dependency

[MacPorts]

#36705: youtube-dl should have ffmpeg as dependency
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 Reporter:  kyounger@…  |      Owner:  macports-tickets@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.1.2
 Keywords:              |       Port:  youtube-dl
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 The --extract-audio option in youtube-dl requires ffmpeg.

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Ticket URL: <https://trac.macports.org/ticket/36705>
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