When using FaceTime on OS X 10.10 to initiate a call using the iPhone, is there a shortcut that allows me to mute the call from the keyboard?
Is there a keyboard shortcut (or a way to setup a shortcut) to trigger the Mute function?
Yes you can! Here are the steps:
Open Automator and create an Automator Service, with a single Run AppleScript action, containing the following code:
High Sierra and later:
tell application "System Events" to tell process "Notification Center"
if checkbox "Mute" of window 1 exists then
click checkbox "Mute" of window 1
end if
end tell
Sierra and earlier:
tell application "System Events"
if checkbox "Mute" of window 1 of application process "FaceTime" exists then
click checkbox "Mute" of window 1 of application process "FaceTime"
end if
end tell
That's it! You should now have a service set up, tied to the shortcut you chose that can be accessed from anywhere.
Ctrl+Alt+M
tell application "System Events" to tell process "Notification Center" to click checkbox "Mute" of first item of windows