Video Conference Mute

Note

VCM is moving into legacy mode. Please find more about what this means in our dedicated discussion issue.

Quickly mute your microphone (audio) and turn off your camera (video) with a single keystroke while on a conference call, regardless of what application has focus on your computer.

Getting started

The default shortcuts to use Video Conference Mute are:

• ⊞ Win+Shift+Q to toggle both audio and video at the same time
• ⊞ Win+Shift+A to toggle microphone
• ⊞ Win+Shift+I to toggle microphone until key release
• ⊞ Win+Shift+O to toggle camera

When using the microphone and/or camera toggle shortcut keys, you will see a small toolbar letting you know whether your microphone and camera are set to on, off, or not in use. You can set the position of this toolbar in the Video Conference Mute tab of PowerToys settings.

To use this module, it must be selected as the source in the apps that are using camera and/or microphone. Go to the settings and select PowerToys VCM.

Settings

The Video Conference Mute page in Settings provides the following options:

Setting	Description
Shortcuts	Change the shortcut key used to mute your microphone, camera, or both combined.
Selected microphone	Select the microphone on your machine that this utility will use.
Push to reverse	If enabled, allows both push to talk and push to mute, depending on microphone state.
Selected camera	Select the camera on your machine that this utility will use.
Camera overlay image	Select an image to that will be used as a placeholder when your camera is turned off. By default, a black screen will appear when your camera is turned off with this utility.
Toolbar	Set the position where the Microphone On, Camera On toolbar displays when toggled (default: top right corner).
Show toolbar on	Select whether you prefer the toolbar to be displayed on the main monitor only (default) or on all monitors.
Hide toolbar when both camera and microphone are unmuted

How this works under the hood

Applications interact with audio and video in different ways. If a camera stops working, the application using it tends not to recover until the API does a full reset. To toggle the global privacy camera on and off while using the camera in an application, typically it will crash and not recover.

So, how does PowerToys handle this so you can keep streaming?

• Audio: PowerToys uses the global microphone mute API in Windows. Apps should recover when this is toggled on and off.
• Video: PowerToys has a virtual driver for the camera. The video is routed through the driver and then to the application. Selecting the Video Conference Mute shortcut key stops video from streaming, but the application still thinks it is receiving video. The video is just replaced with black or the image placeholder you've saved in the settings.

Debug the camera driver

To debug the camera driver, open this file on your machine: C:\Windows\ServiceProfiles\LocalService\AppData\Local\Temp\PowerToysVideoConference.log

You can create an empty PowerToysVideoConferenceVerbose.flag in the same directory to enable verbose logging mode in the driver.