Re: [nznog] NZ Multicast

If memory serves me correctly I was using RTP. The problem was the machines decoding it. A long time ago, and it was not the point, just the postscript :-) jamie On Wed, 2008-12-17 at 00:16 +1300, Cameron Kerr wrote:

I believe this is what RTP is for, no?

-- Cameron Kerr Sent from my iPod

On 17/12/2008, at 12:01 AM, Nathan Ward wrote:

...

On 16/12/2008, at 11:24 PM, jamie baddeley wrote:

...

[p.s back in 2000 I played around with multicast. the biggest problem was I couldn't synchronise CPU processing such that the audio/video spat out on distributed heterogeneous systems at almost exactly the same time over a wide geographic area. At that point I gave up. But it was fun playing with it.]

Could you do it with unicast any better?

I would say that regardless of the -cast, you would have to have accurate timing at all the receivers, and buffer ever so slightly to keep stuff in sync. Does MPEG have a standard for that - ie. "play this keyframe at time x" metadata? or is there some other way it's done?

-- Nathan Ward

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