[pulseaudio-discuss] How to choose the sound card for an application using CLI ?

01ivier at labomedia.org 01ivier at labomedia.org
Tue Nov 3 13:47:38 UTC 2020

It works !

For the record, it works too with the index value gived with :
pacmd list-sinks | egrep 'index|name:'

I prefer this way because, as I've got multiple times the same card, the 
name (which depends on how many card I've got) could change if I remove 
one of them. The index is fixed in that case.

Thanks a lot.


Le 2020-11-03 10:39, Tanu Kaskinen a écrit :
> On Tue, 2020-11-03 at 02:25 +0100, 01ivier at labomedia.org wrote:
>> Hello,
>> I want to run applications with specifics sound cards in command line 
>> on
>> Ubuntu 20.04.
>> I know it is graphically possible with Pulseaudio Volume Control which
>> let me choose the card in a menu after the application is launched.
>> But I want to use command lines so that I can automatize the process 
>> in
>> a bash file (I've got ten sound cards and more to come).
>> I've tried "pactl set-default-sink" but it changes the card for all 
>> the
>> applications.
>> I've looked in "man pulse-cli-syntax" but I didn't find what I'm 
>> looking
>> for.
>> I've also tried to use environment variables such as ALSA_CARD= and
>> ALSA_PCM_CARD= without success.
>> Is there a way to do what I want ?
> Maybe the PULSE_SINK environment variable will do the trick. The
> variable value is a sink name (to get a list of names, run "pactl list
> sinks | grep Name").

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