Linux

I did something similar a while ago but for changing volume on a single application, should work for devices as well though since both are just nodes.

Try this:

#!/bin/sh

node_id=$(pw-dump | jq '.[] | select(.type == "PipeWire:Interface:Node" and .info.props."node.name" == "Virtual-Sink-1") | .id')

echo "Adjusting volume for $node_id"

wpctl set-volume $node_id 10%-

Replace Virtual-Sink-1 with the name of your audio device and 10%- with the operation you want to perform.

I was thinking about figuring out how to set up something similar so I can adjust discord volume separately from everything else but I haven’t got around to it yet. I think the way to go would be using wpctl status To get a list of all sources and sinks and parse out the id from there

wpctl status | grep "\. Some Discord Output" | egrep '^ │( )*[0-9]*' -o | cut -c6-55 | egrep -o '[0-9]*'

I think the above would return the ID of a node named “Some Discord Output” but I’m not at my computer to check

If I understand correctly, you can use pgrep to get the IDs of the processes you need.