[Icecast] Are there any success stories streaming to an icecast2 server using Asterisk or OpenMCU?

Karl Heyes karl at xiph.org
Sat May 21 07:33:13 PDT 2005

On Sat, 2005-05-21 at 14:16, Geoff Shang wrote:
> Flash Love wrote:
> > I have read more about asterisk and have succeeded in using it's app_ices
> > function and a sample conference .  I would like to learn more about lowering
> > the latency between the Speaker on the SIPphone->Meetme
> > Conference->ICES->Listener stream.
> Vorbis is always going to have some latency, but you could try the 
> following:

any format is going to have some latency. Vorbis is no different in this

> * Disable the burst options in Icecast
> * Lower the listener's buffer size to the smallest possible value

These 2 are related, so both have to be done to reduce the latency.

> * I think there's a setting in Ices which you could also reduce

ices already flushes audio out every second. In 2.0.1 you can state in


to change the default (which is samplerate). icecast 2.2 also rebuilds
vorbis only streams, but that isn't changeable from the half-second
flush currently.  Most of the lag is in the icecast->listener buffering


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