[LAU] make a VU meter listen to jack output ports

[Kjetil Matheussen]

Peter P:

> Hi list,
>
> I am wondering how I could make a VU meter automatically receive all
> audio that is sent to specific jack output ports by various
> applications, also from those that I will start later on a given day.
>
> thank you for all ideas!
>

Hi,

jack_capture is able to do exactly what you ask for.
jack_capture is mainly made for recording audio,
but to avoid recording anything, just run it in "timemachine"
mode:

$ jack_capture --meterbridge --timemachine --port system:playback_1 --port
system:playback_2

(make sure "meterbridge" is installed)
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