[pulseaudio-discuss] recording from Built-in Audio too slow

[Matthias Kattanek]

On Tue, 08 Apr 2014 05:54:51 -0500 Rex Dieter <rdieter at math.unl.edu> wrote

> mattes wrote:
> 
> > On Sat, 05 Apr 2014 10:07:48 +0300 Tanu Kaskinen
> > <tanu.kaskinen at linux.intel.com> wrote
> > 
> >> On Fri, 2014-03-28 at 20:27 -0700, mattes wrote:
> >> > Trying to record audio that is already playing on the system.
> >> > E.g. live conference.  For Recording is use gnome-sound-recorder or
> >> > audio-recorder, which by default records from the mic input.
> >> > Using pavucontrol as a helper, I switch the under the recording tab
> >> > to the 'Monitor of Built-in Audio Analog Stereo' to get access to the
> >> > internal audio channel.
> >> > 
> >> > It works, but there is a nasty side effect. When playing back the
> >> > recorded
> >> > sound clip, I noticed  that the pitch is different. As it turns out the
> >> > clip is playing in slomo, roughly 10%+ slower. Enuff to be annoying. It
> >> > seems that playback time is longer than the actually recording time.
> >> > 
> >> > I switch to a different recorder, but no change the problem still
> >> > evident.
> >> >  "'anil'" <anil at univesointegration.com>
> >> > One thing I noticed is that, the slow down does not occur when I record
> >> > e.g. from microphone. Starting the recording from the MIC input and
> >> > then switching during the recording to 'Monitor of Built-in Audio',
> >> > shows that the slowdown start when the switch happens.
> >> > 
> >> > The laptop is running Fedora 19. close to be uptodate
> >> > 
> >> > Any advice how this can be fixed?
> >> 
> >> This might be this bug, which was fixed in 5.0:
> >> https://bugs.freedesktop.org/show_bug.cgi?id=66424
> >> 
> >> --
> >> Tanu
> > 
> > Thank you that is helpful. the bug seems to fit very well to the problem I
> > experience.
> > 
> > I am in the process of upgrading my Fedora 19 pulseaudio v3 to the
> > current git version. Is that considered a stable version or do you folks
> > have stable packages available some where.
> > 
> > Is pulseaudio v5 compatible with Fedora 19?
> 
> It should be, you can get a packaged version here,
> http://repos.fedorapeople.org/repos/rdieter/pulseaudio-backport/
> 
Thanks for sharing this. This definitely is a quicker way to update
to v5.0. I will give that a spin.

I started building from git. Is there a way to find from the binary/package
what build options have been used?

Mat