Re: [LAU] [Ardour] Offline export with OSC

On Tue, May 10, 2011 at 07:36:46AM -0400, Paul Davis wrote :
> On Tue, May 10, 2011 at 6:15 AM, Arnold Krille <arnold@email-addr-hidden> wrote:
> > On Tuesday 10 May 2011 12:00:56 Aurelien wrote:
> >> Second question, is there a way to do a "non-realtime" export, I mean an
> >> offline export, like when rendering 3D images, and so on.
> >
> > That is how export generally works in ardour. So, yes, there is a way to
> > export offline, in ardour its called "Export" :-)

OK. Thanks.

>
>
> in addition, ardour has no concept of different "quality levels" for
> export. what is exported is precisely the same data as would be
> generated during playback. there is no "high quality" or "low quality"
> option. the only thing that is different is whether or not JACK is
> continuing to use an audio interface (or network interface) for timing
> - during export, Ardour tells JACK to stop doing that which means that
> it no longer matters how long the process of generating the data and
> writing it to disk will take. since the same code path is used for
> data processing, the only real difference is that we're also writing
> to disk (but unlike the case when doing normal recording, this is done
> directly without elaborate buffering to make sure that things are
> real-time safe - we don't need that because export doesn't need to
> meet real time requirements).

OK.
Then, I would have one question: why can I come to different results for
several exports of the same session?
I mean, I already had cases in which my master finally end up to +1.0
dB, and the export after to -0.1dB (without changing anything), and so on.
I'm not speaking of big differences, but enough to make it hard to
optimize my dynamic before mastering.
I really thought that it was linked to realtime processing, but if not,
I'd be interested in understanding what is behind all of this.

>
> --p
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-- 
Aurélien
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