[MacPorts] #46700: ffmpeg: add openssl variant

[MacPorts]

#46700: ffmpeg: add openssl variant
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  Reporter:  eirnym@…     |      Owner:  devans@…
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  ffmpeg       |
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Comment (by devans@…):

 I'm not sure why you want to do this.  OpenSSL is considered a second
 choice for a couple of features due to its (nonfree) license restrictions.
 Because of this any +openssl variant would require the +nonfree variant as
 well (enforced in ffmpeg's configure).

 Features involved are
  * tls protocol -- ffmpeg can use either gnutls or openssl for this,
 currently configured using gnutls.
  * rtmpe protocol -- ffmpeg has two versions of this, one using openssl
 (ffrtmpcrypt) and one using librtmp (rtmp*).  Currently the openssl
 version is disabled and the librtmp version can be activated using
 existing variant +librtmp.

 So I don't see that using openssl would add any functionality and it
 definitely adds licensing restrictions that do not
 come into play if gnutls and librtmp are used instead.

 But maybe I'm wrong. What advantage do you see?

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Ticket URL: <https://trac.macports.org/ticket/46700#comment:4>
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