[vorbis] DVD 5.1 surround -> ogg ?

[Wilson]

The current process is like this:
Downmix to 48KHz stereo WAV from AC-3/5.1
Encode to MP3 / Mux into AVI alongside DivX video.

Using Ogg instead of MP3 wouldn't make the situation worse, just
patent-free. :)

----- Original Message -----
From: "Freya" <freya128 at yahoo.com>
To: <vorbis at xiph.org>
Sent: Friday, June 29, 2001 2:19 PM
Subject: Re: [vorbis] DVD 5.1 surround -> ogg ?

>
>
> >
> > Note that the 5.1 channel audio tracks on dvd videos
> > are already
> > compressed with Dolby's AC3 perceptual codec (at
> > least in region 1) so
> > you'd expect transcoding artifacts similar to
> > mp3->ogg conversion. Not
> > that the divx market cares. ;-)
>
> Good point!
> But wouldn't they have that problem with the .mp3
> files they are using now in DivX ;) presumably they
> are
> generating raw audio files and re-encoding them in
> .mp3 format. Perhaps this re-encoding would be more
> forgiving with another mpeg format than with vorbis
> though!
>
> Wow I never thought of that till you mentioned it! :)
>
> love
>
> Freya
>
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