[icecast] Q: Is it possible?

Wed Feb 11 22:58:25 UTC 2004

Hi Raul,

Here is how I would set it up to answer your scenarios:

-One Icecast server in Spain.
-One source in Spain
-One source in Honduras
-One source in Guatemala (for example)
...

I would reserve a mountpoint for each one of these sources:
-Spain = my_radio.mp3 (Your listeners will listen to this mountpoint ONLY)
-Honduras = Honduras.mp3
-Guatemala = Guatemala.mp3
...

Let's say you use Winamp/Oddcast as source clients. If, you want to
broadcast a live from Honduras, you won't ask your listeners to switch to
"Honduras.mp3" so you have to set up your Spanish source (Winamp/Oddcast) to
listen to "Honduras.mp3" and resend the stream to "my_radio.mp3". In this
way, there will be a smooth transition between the Spanish and the Honduran
sources because the final user will always listen to "my_radio.mp3" (not
Honduras.mp3 or Guatemala.mp3).

Also, if you want to listen to several sources without broadcasting it on a
single computer, you don't necessarily need several soundcards. You can run
more than one instance of Winamp/Oddcast and use a silent output plugin
(attached to this mail). In this way, the audio pipeline is managed by
software and not hardware.

I don't know if it's the best solution, but I am just suggesting.

Saludos de Barcelona,
(¡Yo tambien escribo desde España!)

MAX

-----Original Message-----
From: owner-icecast at xiph.org [mailto:owner-icecast at xiph.org] On Behalf Of
Raúl Wild-Spain
Sent: Wednesday, February 11, 2004 11:03 PM
To: icecast at xiph.org
Subject: Re: [icecast] Q: Is it possible?

wow, Enrico ... it's a great help ;-)

I comment:

----- Original Message -----
From: "Enrico Minack" <enrico.minack at informatik.tu-chemnitz.de>
To: <icecast at xiph.org>
Sent: Wednesday, February 11, 2004 8:00 PM
Subject: Re: [icecast] Q: Is it possible?

<p>> Hi Raúl,
>
> interesting project ;-) So this is what I would recommend. For a number of
> remote speakers (1 or more) it would make sence to mix them together in
the
> studio the local speaker is located.
>All remote speakers could mount as a
> source at the broadcast server (shouldn't be a problem to have a bigger
> distance between them).

Ok, the first is more or less what I thought (and what i need), mix them
together in the "local" studio (where will exist the broadcast server,too)

mmm ... but I confused with  "... mount as a source at the broadcast
server...". Do you refer each remote location will have an streamer client
(pc) to send their signal (through Inet) to the broadcast server? or another
way?

<p>>Other way would be to have a icecast server at each
> remote speaker's location.

They want only a central broadcast server for controlling and planning the
kind of  programs (and to mount them).

> However, a PC could play these streams from the broadcast server on a
number
> of soundcards and the output of them is put into an analog mixer where the
> local speaker can control the volume and can listen into the stream
without
> broadcasting. The main audio output from this mixer goes into the
broadcast
> server which creates the final stream.

OK.. I'm digesting ;-)) ...

... and analyzing ...
* I will have a broadcast server (bcs).
* this bcs will have various soundcards (n +1 -> N speakers + 1 final mix)
* the output of each soundcard is put into the analog mixer.
* the remote clients will send the signal to the bcs (through liveice?) .
* these channels will be received by bcs (and not broadcasted) and will
output them to the analog mixer (one channel per soundcard).
* The local speaker (or producer) will mix all and will send the results to
the bcs.
* the result will be broadcasted ...

right?

More doubts:

- about soundcards: are important terms like "latency 0"?or MP3 decoding by
hardware?, do you know  RME digi9336? can you recommend me any soundcard?

- Do you know if it is possible to control an MP3 file list  manually
( for example if someone want to launch these files one by one and on demand
while mix the rest of remote channels - it could be another pc playing as a
MP3 server ... )

- the rule 1 soundcard = 1 remote speaker isn't fixed, right?. If the number
of speakers grows I will have some way to mix various sources to the same
soundcard. yes?

one bcs routing various "channels" to each soundcard is possible with one
icecast server or I will need N icecast servers on the same machine?

>
> This is how we make live broadcast from remote venues.

then it's all guaranteed !!!  ;-))

>
> I hope I could help some,
> Enrico M.

It has already been a great help,
;-))

>
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