How to in/decrease the volume of a specific application by command?

Question

I want to create a keyboard shortcut to decrease the volume of the application I am currently in. So the first step is to change the volume of one specific application by command. So how is this possible?

Edit: I want to have different volumes per application at one time.

http://askubuntu.com/questions/180612/script-to-mute-an-application?rq=1 — muru, Nov 17 '16 at 11:06
Seems to me you just need to use set-sink-input-volume instead of set-sink-input-mute in that script. See the pactl manpage for more info. — muru, Nov 17 '16 at 15:19

score 2 · Answer 1 · edited Apr 13 '17 at 12:25

Setting volume from cli

The command:

amixer -q -D pulse sset Master 30%

is one I found always working so far. To completely dim:

amixer -q -D pulse sset Master off

Switch back on:

amixer -q -D pulse sset Master on

Setting volume per application

Not sure if you want different sound volumes for different applications at the same time, or you'd like to set the volume, depending on what application is in front.

If the latter is the case, take a look here. It includes a script, dimming sound depending on the active window. Can easily be made to set a specific volume.

To find more information on how to do it per application at the same time see the answers to this question, as provided by @muru.

@Marton your second step should be a different question. – muru Nov 17 '16 at 15:03 — muru, Nov 17 '16 at 15:03

How to in/decrease the volume of a specific application by command?

1 Answers1

Setting volume from cli

Setting volume per application