[Ardour-Dev] 2.8.12 export problem

[Dominic Kaiser]

What distro are you using?  And ardour3 no longer has the "quick" export.
 Unless I am mistaken.  When I was using fedora 16 I had alot of issues
exporting.

dk

On Thu, Jun 14, 2012 at 3:43 PM, John Rigg <ardev2 at jrigg.co.uk> wrote:

> On Thu, Jun 14, 2012 at 05:11:52PM +0100, John Rigg wrote:
> > I've just tried exporting a stereo file from a 48kHz session in Ardour
> > 2.8.12 to 44.1Hz 16-bit and encountered some very odd behaviour.
> > In 2.8.11 this procedure used to produce a file without any audio in it
> > for the first 3 or 4 attempts, but it would eventually export
> successfully.
> >
> > In 2.8.12 this has changed. The exported file contains audio but the
> > file is truncated. Subsequent exports truncate the file to a different
> > length, which appears to be random. Sometimes only a few MB are exported,
> > other times 90% of what should be a 32MB file get exported. I gave up
> > after 30 or so attempts failed to produce a full length file.
> >
> > Exporting to a 48kHz floating point file works fine.
> > Exporting to 48kHz 16-bit with triangular dither also works.
> > Add in sample rate conversion and the problem appears.
> >
> > System is Debian testing amd64 with jack-0.121.3 and 3.2.16 kernel with
> > preempt but no rt-patch. Command line used to start jackd couldn't be
> > simpler:
> > jackd -d alsa
>
> I just tested export with the same parameters in Ardour3 svn12724
> and it exported successfully. It did take _much_ longer to export
> though - it appeared to be exporting at the same rate as the file
> played - so it's hard to tell if the issue that caused it in 2.8.12
> is still there.
>
> John
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