Keyboard Shortcut to change specific program's volume in Windows

Question

I was looking for a way to quickly change the volume to only one program, probably the active window, using a keyboard shortcut. I can do this manually with the Windows Volume Mixer, but I'm looked for a quicker way to do it.

Answer 1

Nircmd's setappvolume, changeappvolume and muteappvolume commands are what you want.

You can create shortcuts to nircmd.exe, set keyboard shortcuts and add the following to the shortcut properties' Target fields:

setappvolume focused <volume level>
changeappvolume focused <volume level>
muteappvolume focused <mute mode>

where:

volume level is a number between 0 and 1 and stands for the percentage of change
(for changeappvolume it can be positive or negative)

mute mode is either 0 (= unmute), 1 (= mute) or 2 (= toggle between mute and unmute)