* Peter P. <peterparker(a)fastmail.com>
[2015-06-14 13:00]:
* Kjetil Matheussen
<k.s.matheussen(a)gmail.com> [2015-06-14 09:03]:
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)
Thanks Kjetil,
I found out that meterbridge can connect to the system:playback_N ports
itself, but running it via jack_capture gives me persistent connections.
Thanks, this is great and works fine for me as
jack_capture --meterbridge --meterbridge-type dpm --timemachine --port system:playback_1
--port system:playback_2 /dev/null
Strangely this does not work when I start it from fluxbox' menu, ie.
without a visible (x)terminal. The application (and hence the
meterbridge) close immediately. Do you have an idea why this could
happen?