Screen casting with PulseAudio

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On Tue, 18 Oct 2011 12:55:13 +0200, Micha? Sawicz <michal at sawicz.net>
wrote:
> Dnia 2011-10-18, wto o godzinie 12:26 +0200, R?mi Denis-Courmont pisze:
>> One regularly requested feature addition for VLC media player is the
>> ability to record desktop audio in sync with screen capture.
>> This is theoretically feasible with a PulseAudio sink monitor source.
>> But but, I am a it puzzled as how to record the correct source. In
>> this case, the default source is obviously inadequate, as it would
>> typically be the microphone. In particular, what to do if there are
>> more than one sink, and thus more than one monitor??
> 
> See http://www.pulseaudio.org/wiki/Modules and read about
> module-null-sink and module-loopback. You can obviously only record from
> one source (for screencasting - probably a monitor), but you can also
> loop back any number of sources to the sink whose monitor you're
> recording. That can be a null sink, too, so that you don't get feedback
> through your speakers.

Eh? The user doing the recording typically wants to hear the sound while
recording. So I don't see what null sink has to do here.

> Obviously that's not relevant to VLC itself, it's through pactl/pacmd
> (sorry) and pavucontrol that you need to select the appropriate
> recording source.

So that's not an answer to the problem.

-- 
R?mi Denis-Courmont
http://www.remlab.net/


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