Icecast - Feb 2006 - elegant way of re-encoding?

hi,

I have a single stream going to my icecast server, encoded in hi-quality
ogg. goal is to serve hi- and low quality ogg and mp3 streams,
re-encoded from the single hi-quality ogg stream.

encoding all from e.g. oddcast simultaniously is not an option.

it would be easier if source-streams would be static and always named
the same .. unfortunately they are not. if so, I could define simple
configs for streamtranscoder (if I understood the use of
streamtranscoder correctly ;)

so, what I'm looking for is a way to re-encode every stream which is
sent to the icecast server, as soon as it is started.

this could be done with streamtranscoder and a looped bash script
around, that looks if there is a source, if so it starts the re-encode.

Is there an elegant way, better than a bash script? maybe a plugin for
the icecast server itself?

or, where to find out more about?

kind regards,
k

kloschi wrote:
> it would be easier if source-streams would be static and always named
> the same .. unfortunately they are not. if so, I could define simple
> configs for streamtranscoder (if I understood the use of
> streamtranscoder correctly ;)
Sure, streamTranscoder could do what you say.  Are you saying you have 
questions about it?  Feel free to ask them here.
> so, what I'm looking for is a way to re-encode every stream which is
> sent to the icecast server, as soon as it is started.
>
> this could be done with streamtranscoder and a looped bash script
> around, that looks if there is a source, if so it starts the re-encode.
>
> Is there an elegant way, better than a bash script? maybe a plugin for
> the icecast server itself?
I've not used it, but Icecast now has the ability to execute a command upon 
stream start, as well as upon stream stop.  You could use this fascility to 
launch a streamTranscoder instance.

Geoff.

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Hi,

sorry for late reply ;)

Geoff Shang wrote:
>> so, what I'm looking for is a way to re-encode every stream which
is
>> sent to the icecast server, as soon as it is started.
>>
>> this could be done with streamtranscoder and a looped bash script
>> around, that looks if there is a source, if so it starts the re-encode.
>>
>> Is there an elegant way, better than a bash script? maybe a plugin for
>> the icecast server itself?
> 
> I've not used it, but Icecast now has the ability to execute a command
> upon stream start, as well as upon stream stop.  You could use this
> fascility to launch a streamTranscoder instance.
I didn't find any docs on that, how to execute a command upon stream
start/end?

the docs on streamTranscoder are a little rare also ;)
what exactly does streamTranscoder:
serving one multiple bandwidth stream (like havong one stream on server
and when client clicks on it it just measures bandwidth and serves the
highest possible quality) in just one mountpoint?
or
serving multiple streams with multiple encoding & qualities, just as
configured?

What bothers me most, is that streamTranscoder seems to connect to just
one server getting the stream and delivering to the same.
So if icecast serves a stream, on stream-start streamTranscoder
re-encodes the stream and delivers it to the same server:port, how to
avoid a loop of re-encoding & re-delivering the same stream over and
over again?

thanx and regards,
kloschi
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