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Re: [webrtc-pc] How to truncate simulcast layers? (#2537)

From: Harald Alvestrand via GitHub <sysbot+gh@w3.org>
Date: Thu, 11 Jun 2020 14:16:13 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-642685221-1591884972-sysbot+gh@w3.org>
https://tools.ietf.org/html/draft-ietf-mmusic-sdp-simulcast-14#section-5.2

   The listed number of simulcast streams for a direction sets a limit
   to the number of supported simulcast streams in that direction.  The
   order of the listed simulcast streams in the "send" direction
   suggests a proposed order of preference, in decreasing order: the
   rid-id listed first is the most preferred and subsequent streams have
   progressively lower preference.  The order of the listed rid-id in
   the "recv" direction expresses which simulcast streams that are
   preferred, with the leftmost being most preferred.  This can be of
   importance if the number of actually sent simulcast streams have to
   be reduced for some reason.


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