Subject: Re: Looking for audio and video stream players
To: Michael Core <520079546242-0001@t-online.de>
From: village idiot <village_ldi0t@yahoo.com>
List: netbsd-help
Date: 03/05/2002 04:52:01
Michael,
Sorry for not being specific about my needs regarding
the applications. Actually I would only use this on a
closed LAN. This is why I wonder about the server side
also.
As to quality, I would like something that takes high
quality input (to the network) wich I could re-encode
to low quality inside the network if bandwith should
decrese dramatically (or something else unforseen
should happend). This re-encoding I could for example
do at lower layers by for example doing it in kernel
mode on a trimmed node just for such purpose.
I actually have much bandwith (1Gbit ATM) at my
disposal for testing. CPU only PII-350 I think. I
would like to pump as much through this as possible to
test if the end systems would be bottle-necks and not
the network itself. It could be interresting to send
already made high quality files, or use something like
a webcam or whatnot.
If I get this working properly it could eventually
work on for example electronic classrooms, like
Lecture on Demand for instance. This is part of the
reason why I want it to reside on top of a module
stack of my own making. This to be able to avoid TCP
for example if I want. And indeed I want to avoid TCP.
The key here is low (close to no) latency.
Morten
--- Michael Core <520079546242-0001@t-online.de>
wrote:
> village_ldi0t@yahoo.com (village idiot) wrote:
>
> > I am looking for audio and video stream players.
> One
> > specifically just for audio would be nice.
>
> For audio, you could use lame for encoding and
> mpg123, which is able to
> play Icecast- and HTTP-streams, for decoding,
> although this might use
> rather much cpu ressources. The problem is that you
> didn't specify the
> desired audio-quality nor how much bandwith
> can/should be used. Especially
> if you can code the network part yourself, there a
> uncounted
> possibilities. Ogg Vorbis is a free format. Maybe
> low quality PCM (8 kHz,
> 8 bit, mono) is good enough for your application -
> whatever it might be.
>
> The same with video. MPEG-I/II is probably the most
> popular encoding and
> there are many free tools. Of course, it needs much
> power - probably less
> than RealPlayer-formats - and much bandwith, too.
> For a video-phone you
> would use H323.
>
> HTH
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