RA/RV Feeds from RBN

Tue Feb 10 21:07:38 UTC 1998

On Tue, 10 Feb 1998, Jeffrey Payne wrote:

==>I heard lots of questions on multicast today...here's how it works with
==>RealMedia.  If you have decent MBONE connectivity, you'll negotiate
==>multicast when you connect to the audio or video stream.  If you don't, the
==>client falls back to unicast UDP mode.  If even that fails (say you're
==>behind a firewall), it rolls to TCP mode, and will ultimately resort to HTTP
==>"cloaking" if nothing else works.  Users can override the automated
==>fall-back through the preferences dialog if there's a strong preference for
==>a particular mode.

The goal here would be to allow other clients to see the session via
traditional multicast tools (i.e., h.261 video and some form of RTP
audio).

/cah