nanog mailing list archives
RA/RV Feeds from RBN
From: "Jeffrey Payne" <jpayne () real com>
Date: Tue, 10 Feb 1998 00:31:41 -0800
Time to take a moment and describe today's feed from the encoding perspective. We do lots of on-site coverage, and usually bring in a dedicated ISDN for the encoder feed back to the server(s) and out to the network. In UDP mode, our encoder and server can buffer quite deeply (say, 300 seconds) to accommodate some pretty significant network outages. Until today, we couldn't imagine a scenario where this wasn't good enough, but as luck would have it, we were wrong. Fortunately today's net problem was resolved by the end of the general session and Tuesday *should* be much cleaner. On the subject of camera positioning and exposure, we know, it was not good. I think we can pull together a somewhat more coherent set of post-produced presentations with what we have on tape -- we'll find out when we get a look at them. But we should have better cameras, a video switcher, and somewhat better lighting to do this virtual conference thing right. Next meeting? 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. Jeffrey Payne, GM Broadcast Operations RealNetworks, Inc.
Current thread:
- RA/RV Feeds from RBN Jeffrey Payne (Feb 10)
- Re: RA/RV Feeds from RBN Craig A. Huegen (Feb 10)
- Re: RA/RV Feeds from RBN Matthew Petach (Feb 10)
- Real Networks and NANOG Geoff White (Feb 11)
- Re: RA/RV Feeds from RBN Mark Hernandez (Feb 11)
- Re: RA/RV Feeds from RBN Jake Khuon (Feb 12)
- Message not available
- Re: RA/RV Feeds from RBN Jay R. Ashworth (Feb 12)
- Re: RA/RV Feeds from RBN Pete Ashdown (Feb 12)
- Re: RA/RV Feeds from RBN Jared Mauch (Feb 12)
- Message not available
- Re: RA/RV Feeds from RBN Jay R. Ashworth (Feb 13)
- <Possible follow-ups>
- Re: RA/RV Feeds from RBN Dax Kelson (Feb 11)