Icecast - Oct 2008 - hardware / bandwidth requirements

Hi there!!

Any body can drop me some information about the hardware and bandwidth
requirements  to setup an icecast server to stream real time video
using OGG/Theora? I'll  setup an production server, and need to
calculate an estimate number of  maximum clients connections to the
server.

thanks in advance,

zea



-- 
Gabriel Zea
mailTo <zeaATrandomlabDOTnet>
http://zea.randomlab.net
http://twitter.com/z3a

Hi zea,

Gabriel Zea schrieb:
> Hi there!!
>
> Any body can drop me some information about the hardware and bandwidth
> requirements  to setup an icecast server to stream real time video
> using OGG/Theora? 
For icecast itself the hardware requirements are very low. Especially if 
you are streaming video there won't be so many listeners as would be if 
you'd stream audio only.
> I'll  setup an production server, and need to
> calculate an estimate number of  maximum clients connections to the
> server.
>   
$upstream_bandwith / ( $stream_bitrate + $TCP-overhead ) = absolute maximum

The real maximum will be a tad lower.

Cheers

Thomas

PS: If you want to use the server also to real-time encode the stream by 
running an source client on it this will require a lot more horsepower. 
But that's not icecast scope.

My rule of thumbs is look at the bitrate,  Multiply it by the number
of users and ad 10% as a rule. Then you migth have to tweek it around
alittle. For example we tdo lot of of mono audio brodcasts. at 24k,
and have found out using decated servers we can eastly handle 80 to 90
listeners on a 1M bandwith connection(a cable modem).

I found is the slow listeners start to climb up your reaching the max
you setup can handle. Or there is somehting wrong with the internet
connection.

But this is one kind of bandwidth, The other kind of bandwidth is base
on a month scale,   Then you need to use there caulating tools to
figure out what bandwidth you will use. I have found deferent companys
calculate it deferently. And there is not real rule to go by other
then check htere tools.

WE have managed to squeeze 4 256k videops on out 1M lines but it was a
tight squeeze on a good day, we usely out source to couple of places
that have beter coonectiosn to the internet.

When they finialy install FIOS here we will be elimating lot of our
oursourcing with luck. :)


On Sun, Oct 5, 2008 at 10:00 PM, Gabriel Zea <z3a at randomlab.net>
wrote:
> Hi there!!
>
> Any body can drop me some information about the hardware and bandwidth
> requirements  to setup an icecast server to stream real time video
> using OGG/Theora? I'll  setup an production server, and need to
> calculate an estimate number of  maximum clients connections to the
> server.
>
> thanks in advance,
>
> zea
>
>
>
> --
> Gabriel Zea
> mailTo <zeaATrandomlabDOTnet>
> http://zea.randomlab.net
> http://twitter.com/z3a
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