[MacPorts] #69924: opencv3: update to 3.4.20

[MacPorts]

#69924: opencv3: update to 3.4.20
-------------------------------------+---------------------
  Reporter:  mohd-akram              |      Owner:  mascguy
      Type:  update                  |     Status:  closed
  Priority:  Normal                  |  Milestone:
 Component:  ports                   |    Version:
Resolution:  fixed                   |   Keywords:
      Port:  opencv3, opencv3-devel  |
-------------------------------------+---------------------
Changes (by mohd-akram):

 * status:  assigned => closed
 * resolution:   => fixed


Comment:

 In [changeset:"dab38f96e148a4b32ada175e9dc639b10cc4e8fc/macports-ports"
 dab38f96e148a4b32ada175e9dc639b10cc4e8fc/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="dab38f96e148a4b32ada175e9dc639b10cc4e8fc"
 opencv3: update to 3.4.20

 - use ffmpeg4

 Closes: https://trac.macports.org/ticket/69924
 }}}

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Ticket URL: <https://trac.macports.org/ticket/69924#comment:3>
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