[vorbis] Bzip2 & Ogg Vorbis

Olaf van der Spek Vorbis at XCC.TMFWeb.NL
Tue Dec 24 02:01:57 PST 2002



----- Original Message -----
From: "Monty" <xiphmont at xiph.org>
To: <vorbis at xiph.org>
Sent: Tuesday, December 24, 2002 4:08 AM
Subject: Re: [vorbis] Bzip2 & Ogg Vorbis

<p>>
>
>
> On Mon, Dec 23, 2002 at 11:30:09PM +0100, Olaf van der Spek wrote:
> > Hi,
> >
> > I've got some (seven) Ogg Vorbis files with a total size of 18637246
bytes.
> > When I use bzip2 to compress these files, the total size is 16949443.
That's
> > 10% less.
> >
> > Is bzip2 supposed to be able to compress Ogg Vorbis files further?
> > If not, are these files encoded with wrong settings?
> > If so, why is there no option to use bzip2 with Ogg Vorbis by default?
>
> Seeking plus pre-set huffman ratios are unlikely to result in losing
> as much as 10% off optimal, unless there are a few other things at
> work here.
>
> Could you give more information?

13-12-2002  11:34         2.047.294 ar21.ogg
23-12-2002  23:15         2.037.056 ar21.ogg.bz2
13-12-2002  11:34         2.522.662 dhunter.ogg
23-12-2002  23:15         2.069.545 dhunter.ogg.bz2
13-12-2002  11:34         3.025.001 dmachine.ogg
23-12-2002  23:15         2.635.327 dmachine.ogg.bz2
13-12-2002  11:34         2.194.455 dreamland.ogg
23-12-2002  23:15         2.192.099 dreamland.ogg.bz2
13-12-2002  11:34         3.436.395 duskhour.ogg
23-12-2002  23:15         3.030.450 duskhour.ogg.bz2
13-12-2002  11:34         1.610.153 illuminati.ogg
23-12-2002  23:15         1.612.104 illuminati.ogg.bz2
13-12-2002  11:34         3.801.286 pharotek.ogg
23-12-2002  23:16         3.372.862 pharotek.ogg.bz2

Some of the files have one comment: "Track encoded by encoder_example.c"

>
> Monty
> --- >8 ----
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