How to freeze your webcam on Zoom (macOS)
Zoom has a mute button for your microphone and an off switch for your camera, but nothing in between. Turning the camera off drops a black tile into the grid and everyone glances at it. What you usually want is for the call to carry on looking normal for ten seconds while you deal with something.
That’s what freezing does. Your video holds on the current frame, the tile stays lit, and nobody’s attention moves.
Why Zoom can’t do this on its own
There’s no built-in freeze in Zoom, on any platform, and no plugin or extension that adds one. Zoom takes whatever the system hands it as a camera. So the way to freeze your video is to give Zoom a different camera — a virtual one that you control.
On macOS that’s a Camera Extension: a small system component that registers a new camera device. Zoom sees it in its camera list like any webcam, and has no idea it isn’t a physical one.
Setting it up
1. Install the virtual camera
Install FrostCam from the Mac App Store. It lives in the menu bar rather than the Dock.
Click the FrostCam icon in the menu bar, then Install Extension. macOS will ask you to approve it in System Settings → Privacy & Security — approve it there and come back. This is a one-time step, and it’s macOS asking, not the app.
2. Start the camera
Back in the FrostCam popover, click Get Started, then Start Camera. FrostCam now reads your real webcam and republishes it as a virtual one. The popover should say “Camera active”.
3. Point Zoom at it
In Zoom, open Settings → Video and change the Camera dropdown to FrostCam. The preview will show your webcam feed as normal — it’s passing straight through.
You can change this mid-call too: click the ^ arrow next to the Stop Video button in the Zoom toolbar and pick FrostCam from the list.
4. Freeze
Click Freeze in the FrostCam popover, or use the global keyboard shortcut so you don’t have to leave Zoom. Your video locks on the frame that was live at that moment. Click again and you’re back.
Set the keyboard shortcut. Fumbling for the menu bar is exactly the visible activity you’re trying to avoid. Assign a shortcut in FrostCam’s settings and freezing becomes one keypress from inside Zoom.
If you need longer than a few seconds
A still frame is convincing for maybe fifteen or twenty seconds. Past that, a completely motionless person starts to read as a frozen connection.
For longer breaks use Loop instead. FrostCam records 3–10 seconds of you sitting there and plays it back continuously, bouncing forward and backward so there’s no visible jump where the clip restarts. You get natural movement — blinking, small shifts — without being there. It holds up for a status update you only need to nod through.
Troubleshooting
FrostCam isn’t in Zoom’s camera list
Zoom caches its camera list at launch. Quit Zoom fully (Cmd+Q, not just closing the window) and reopen it.
If it’s still missing, check System Settings → General → Login Items & Extensions → Camera Extensions and confirm the extension is enabled. Freshly installed extensions occasionally need a reboot to register.
The video is black
The virtual camera only produces frames while FrostCam is running and started. Check the menu bar icon is there and the popover says “Camera active”. If it is, check System Settings → Privacy & Security → Camera and make sure FrostCam has camera access.
Zoom shows my real webcam instead
Zoom keeps separate camera settings per meeting in some configurations. Check the ^ menu next to Stop Video during the actual call, not just in Settings.
Do I need to run terminal commands?
No. Older virtual cameras on macOS used DAL plugins, which loaded code into the host app and needed the app’s code signature stripped to work — you’ll still find guides telling you to do that. Apple replaced DAL plugins with Camera Extensions in macOS 12.3 and disabled them in 14.1. Modern virtual cameras run in their own process and need nothing of the sort. If a guide tells you to run codesign --remove-signature on Zoom, it’s out of date — and following it will break Zoom’s own updates.
A note on using it well
The point of freezing is not to fake attendance for an hour. It’s the ten seconds where you sneeze, someone knocks, or you need to swear at a spreadsheet. Used that way it’s just politeness — you’re sparing four people the little jolt of a tile going dark.