[icecast] streaming both mp3 and ogg

Karl Heyes karl at pts.tele2.co.uk
Fri Dec 20 14:05:00 UTC 2002

On Fri, 2002-12-20 at 12:56, Rakotomandimby Mihamina wrote:
> hi all I use ices0.2.3/icecast1.3.12 on a linux box.
> I stream mp3 .
> I would like to make my listeners to discover ogg .
> My tracks are all in mp3 format.
> i reencode from 128/96 kbs and 44100Hz => 16kbs and 11kHz ( mp3 )
> Is it possible , ( if yes tell me how ) to feed icecast with both mp3
> and ogg stream , at different mount points  .

I doubt icecast 1.3.12 will relay vorbis.  icecast2 will do vorbis and
mp3 (IIRC).

> how to configure ices to play ogg ? i know i'll have to run 2 different
> ices so how to manage ? by indicating in the command line the conf_file
> to read for each launched ices ?

well ices2 doesn't do mp3 at the moment, but it's good enough to do
vorbis well, and using multiple settings.  So you can run that along
side any other source for mp3.

> As well as my tracks are mp3 , is it necesary to have the same track
> both in mp3 AND ogg ???? or is it possible to encode to ogg on the fly
> and feed icecast ?

no it isn't, however there are a few issues to be careful of. You will
be transcoding from one lossy format to another so be wary of the
quality.  The other is that because ices doesn't do mp3 currently you
need to have something external doing file selection and decoding then
feed the output (PCM) into the stdinpcm module. A shell script should
suffice here.


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