[vorbis-dev] Ogg VEO Codec, video in an Ogg stream
jack at icecast.org
Tue Aug 29 23:31:34 PDT 2000
the basic algorith was based on Debauchies wavelets in 3 dimensions.
X * Y * frame
we encoded a 512x256x32 block (limitation of the algorithm of 2^x) and
then discarded the low order vectors. (95% discarded is about the quality
to get the image back, just to the iDWT on the sparse matrix you get from
the real tricks monty helped us figure out where in compressing vector
information and such. the wavelet ideas were hatamoto's, with some help
from numerical recipes.
We have code for a limited encoder, and a limited decoder, but not using
the optimizations for vector storage. It's not really usable, but it does
demonstrate the technique. I can put it up if you guys are really
On Mon, 28 Aug 2000, David A. Bartold wrote:
> On Mon, 28 Aug 2000, Jelle Foks wrote:
> > chad wrote:
> > >
> > > We did make some progress on an opensource video codec named Tarkin.. We do intend it to go into the
> > > Ogg system, but we have been busy working on vorbis. We've gotten 1:30 compression, and with the
> > > ideas we have now (no chance to implement them) we're looking at least 1:50/60 with more dev
> > > time.. The goal is to have it about 1:100.
> > >
> > > We're still looking to add someone with video experience to the team, so that we can move along with
> > > this project (:
> > Does the project have a home page, where is the source, do you have a
> > document that explains the methods you are using? I'd like to take a
> > look at it to see if I could be of help.
> I did a websearch and couldn't find the project. If you could give us a
> pointer to its source, I'd be interested in at least switching it over
> to Ogg. I have experience in doing that. It'd probably make
> more sense to put each frame in its own packet, unlike Veo ATM.
> - David
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