Adobe After Effects
Open the Mask Shape dialog
In Adobe After Effects, Ctrl + Shift + M will open the Mask Shape dialog. On a Mac, press Cmd + Shift + M instead.
Where it works: Mask selected
Every documented variant
| System | Environment | Keys |
|---|---|---|
| Mac | Desktop app | CmdShiftM |
| Windows | Desktop app | CtrlShiftM |
Where this comes from
Keyboard shortcuts in After Effects
Documentation checked on 2026-09-14. That is a documentation review, not a test run inside the application.