Howto grab/capture sound of one VM

[qu...@ixls.eu]

Dear Qubes-Users,

how can I grab/capture the audio-output of one VM?

It should be possible in Dom0 somehow.

Thanks a lot in advance for any hint
G.

[evado...@gmail.com]

interesting. bump

суббота, 13 февраля 2021 г. в 17:15:19 UTC, qu...@ixls.eu:

[Steve Coleman]

On Tue, Feb 23, 2021, 6:02 AM evado...@gmail.com <evado...@gmail.com> wrote:

interesting. bump

суббота, 13 февраля 2021 г. в 17:15:19 UTC, qu...@ixls.eu:

Dear Qubes-Users,

how can I grab/capture the audio-output of one VM?

Not sure exactly what you mean by capture. To play the audio, or record it?

Look at the pulse audio configuration apps inside that VM. You should be able to figure out what device channels are processing sound by looking at the audio volume meters inside that VM.

If recording it is what you want then look for a sound recorder app in that VM. If playing the sound is what you want then look at the pulseaudio controls in dom0.

[go...@ixls.eu]

Am 23.02.21 um 17:25 schrieb Steve Coleman:
>
>
> ...

>
> Not sure exactly what you mean by capture. To play the audio, or record it?
>
> Look at the pulse audio configuration apps inside that VM. You should be
> able to figure out what device channels are processing sound by looking
> at the audio volume meters inside that VM.
>
> If recording it is what you want then look for a sound recorder app in
> that VM. If playing the sound is what you want then look at the
> pulseaudio controls in dom0.

I cannot record inside the VM, the app doesn't allow saving the stream.
But the data should somehow pass the Dom0 I guess.
So there (I wish) it should be possible to 'cat < VMsoundIO >
Audiofile.raw" (or similar )

Just curious
G.