Ogg is a really cool codec, and its great for being open sourced.... for a
long time the codec has been focusing on the lower bitrates, trying to get
those sounding as good as possible.. competing with the likes of mp3pro and
its SBR technology.. I'm not sure if ogg has SBR yet tho.. without it
struggles in some respects, with my ears at 64k compared to mp3pro... it is
good though...
I believe the higher bitrates are getting looked at now but to be honest i
would stick with mp3 for the near future.. there are a lot of cases where
ogg produces undesirable "pumping" artefacts with music where other
traditional codecs have no problems... there are a collection of "difficult"
to encode samples around which all the codecs can attempt to encode
correctly... its the fact that outside of these well known files are a lot
of files that ogg suffers from when others dont.. again with electronica
nearly all the components of the music are in the class of difficult to
encode sounds, and as such really push a codec.. I've said before that i
find MPC the only choice for this, but assuming you still want to stick with
ogg or mp3, going with mp3 and --alt-preset standard or extreme gives you
the knowledge that a highly tuned codec is going to pretty much get you a
near perfect encode... ogg will have a go at perfection and sometimes it
will be significantly better than mp3 at lower bitrates... BUT there will be
times when it lets through these undesireable sounds that are usually much
easier to hear with headphones...
quoted 96 lines -----Original Message-----
> -----Original Message-----
> From: adam@damek.org [mailto:adam@damek.org]
> Sent: 16 April 2003 20:07
> To: idm@hyperreal.org
> Subject: Re: [idm] Ogg vs MP3 encoding
>
>
> Well, Vorbis audio is actually better measured by its "quality" than its
> bitrate. Some of the 3rd party software, however, doesn't
> realize this, or make
> it clear, which provides for a poor example to people just trying
> it out. The
> quality setting has to do with the default encoding method which
> is variable
> bitrate (VBR).
>
> For more information on the Ogg Vorbis quality setting (I use
> "6"), see that
> section of the FAQ: http://vorbis.com/faq.psp#quality
>
> The FAQ doesn't mention that, depending on the capabilities of
> your encoder (the
> command-line version supports this), the quality scale is more
> finely-grained
> than it at first appears. You don't have to choose between "5"
> and "6" - if you
> want, you can pick "5.99" (a popular one for many) or anything else....
>
> I find that, encoding at "6", I get files around the same size
> (usually a tad
> smaller) as I used to get encoding with LAME using the
> "--alt-preset standard"
> preset on the command line. And the Vorbis quality is much better, IMHO.
>
> As far as I can tell, you could encode at quality 3 or 4 and get
> a noticible
> file size reduction, yet have the same or better quality than
> 128kbps or 192kbps
> MP3 files. The only reason I encode at the higher 6 is that I
> use my digital
> audio as a sort of "backup" for my CDs, and so it's nice to have
> the same file
> size, yet better quality.
>
> And the totally free nature of the vorbis codec is a bonus... I know for
> certain I'll always be able to play my .OGGs :)
>
> On a related note, Proem now offers his live shows for download
> in Ogg Vorbis
> format instead of MP3 at his proemland.com site...
>
> On a less related note, those looking for an optimal codec for
> speech should
> check out http://www.speex.org/
>
> -Adam
>
> Quoting Irene McC <substar@iafrica.com>:
> > On 16 Apr 2003 at 9:14, Knapman, James wrote:
> >
> > > Oh, and all this was before I discovered Ogg Vorbis anyway. Which is
> > > much better (and smaller).
> >
> > Is it really smaller? With all this talk, I have Ogg'd my first
> > track ever. To do a true comparison, I used 128kbit compression and
> > compressed the same 4:09min track to Ogg Vorbis (file totals 4,088
> > kb) and the same track at 128 kbits MP3'd comes to a total of 3,906
> > kb.
> >
> > Obviously this is a tiny difference in size (and who said that size
> > matters anyway, harrrrhargh).
> >
> > What compression rate do you recommend for Ogg? I just used Sound
> > Forge, which offers 96, 128 and 320. I haven't installed a specific
> > Ogg-ing device! Up to now I've been encoding MP3's using 192 kbits.
> >
> > Sorry to all who consider this thread OT. You are welcome to respond
> > directly and not to the IDM list (please don't bother flaming).
> >
> > But I have to ask this : where does the name Ogg Vorbis come from,
> > and what does it mean?
> >
> > I
> > *
> >
> >
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> >
>
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