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

[Tanu Kaskinen]

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.
> 
> 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