<Michael.Dillon@btradianz.com> 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