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

[Tanu Kaskinen]

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").

-- 
Tanu

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