Date: Fri, 15 Dec 1995 19:24:02 -0800 From: "Amancio Hasty Jr." <hasty@rah.star-gate.com> To: Charles Henrich <henrich@crh.cl.msu.edu> Cc: freebsd-hackers@freebsd.org, multimedia@star-gate.com Subject: Re: freebsd mbone conference? Message-ID: <199512160324.TAA07793@rah.star-gate.com> In-Reply-To: Your message of "Fri, 15 Dec 1995 18:13:59 EST." <199512152313.SAA06514@crh.cl.msu.edu>
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>>> Charles Henrich said:
> In lists.freebsd.hackers you write:
>
> >"Amancio Hasty Jr." <hasty@rah.star-gate.com> writes:
> >>Is anyone interested in having an informal video/audio conference this
> >>weekend? If so , just send me e-mail and if there is enough
> >>interest, I will announce the date / time both on the list and
> >>on sd.
>
> >I can do it, depending on time.
>
> >I'd still like to talk about high quality audio over the MBONE.
>
> Im suprised no one has hacked the MPEG codec into vat, mpeg layer 2 or layer
3
> compression incredibly small, yet the resulting data stream sounds wonderful
.
I have the berkeley mpeg encoder if anyone is interested it was ported
by Jim Lowe .
The problem with mpeg is that encoding can't be done at least so far in
real time so an mpeg encoder for vat is not that practical however sending
out mpeg audio streams using rtp and playing back the audio with at least
a P90 is indeed practical. And with hack our brains out we can send
mpeg streams with an bit rate of less than 28.8 kilobits/second .
A good example of this type of setup is Xing's StreamWorks and their clients
and BTW the linux binaries work on FreeBSD provided that you have my
mods to the linux module to handle audio.
mpeg is great and cool however with fractal data compression at least for
video one can expect somewhere around 480:1 and with mpeg about 200:1 so
guess what I am thinking about 8)
The December issue of Dr Dobbs has a nice article on Fractal data compression
perhaps one of our math wizards can take a look at the article an comment
on it ...
The other nice thing about fractal data compression is that is scalable and
next year we will have plenty of horse power by way multimedia chipsets to
do stuff like fractal codes so don't forget it helps to have
at least a working software model 8)
Enjoy,
Amancio
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