North American Network Operators Group

Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical

Re: is this like a peering war somehow?

  • From: Peter Corlett
  • Date: Fri Jan 20 09:32:59 2006
  • Newsgroups: newsgate.nanog

<[email protected]> wrote:
[...]
> But it's no magic bullet. Streaming live media also requires low
> jitter, especially if you are selling it as TV because viewers will
> join and leave channels often, as they change channels on their
> remote controls. This means you can't have big local buffers to hide
> jitter, therefore you have to build a network with enough capacity
> so that packets are all cut-through switched.

I observe about 3-4 seconds of latency on the UK DVB-T and DAB
broadcasts anyway compared to analogue. Cost-cutting on CPU grunt in
decoder boxes can mean it takes up to ten seconds to change channel.

In contrast, streaming video and audio from iTMS starts to play a lot
quicker. It sounds like the problems with jitter and latency over
private IP networks is overstated if it still works fine over the
Internet.

(FWIW, this is on 1Mb/s ADSL that is 170ms from www.apple.com.)

-- 
My mother protected me from the world and my father threatened me with it.
								- Quentin Crisp