The mplex multiplexes MPEG audio and video streams into system layers.

From INSTRUCT (in the mplex source):
>
> Please note that I do not have a comprehensive instruction manual for this
> release. I suggest you try the program out with some default values and
> learn something more about ISO/IEC 11172-1 (aka MPEG1/Systems).
>
>
> Christoph.
> moar@heaven.zfe.siemens.de
> +---------------------------------------+--------------------------------+
> | http://www.informatik.tu-muenchen.de/ |                 Christoph Moar |
> | cgi-bin/nph-gateway/hphalle6/~moar/   |                Kaulbachstr.29a |
> | index.html                            |                   80539 Munich |
> | email:moar@informatik.tu-muenchen.de  |   voice: ++49 - 89 -  23862874 |
> +---------------------------------------+--------------------------------+

eric.
erich@FreeBSD.org
 no longer manified into a README.3, as the README.pod is
installed and can be read with perldoc, remove the README.3 files that
may be generated.

With hat:	perl@
Sponsored by:	Absolight
</pre>
</div>
</content>
</entry>
<entry>
<title>Remove ${PORTSDIR}/ from dependencies, categories d, e, f, and g.</title>
<updated>2016-04-01T14:00:51+00:00</updated>
<author>
<name>mat</name>
<email>mat@FreeBSD.org</email>
</author>
<published>2016-04-01T14:00:51+00:00</published>
<link rel='alternate' type='text/html' href='http://tfcis.org/~lantw44/cgit/cgit.cgi/freebsd-ports-gnome/commit/?id=148314483d3098c0d6a33944f1190842e671502f'/>
<id>148314483d3098c0d6a33944f1190842e671502f</id>
<content type='text'>
With hat:	portmgr
Sponsored by:	Absolight
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
With hat:	portmgr
Sponsored by:	Absolight
</pre>
</div>
</content>
</entry>