How to Set a Default Webcam When a Laptop Has Two Cameras

What a default webcam setting actually controls

When a laptop has a built-in camera and you connect a USB webcam, the operating system sees two separate video capture devices. Most operating systems do not assign one of them as a global default for every application. The choice is made inside the app that uses the camera. That is why the same laptop can show your built-in camera in one program and your external webcam in another.

On Windows, the camera privacy page controls whether apps are allowed to use the camera, not which camera they use. You can turn on access at the device level, for Microsoft Store apps, and for desktop apps. Video calling apps and browsers are desktop apps for this purpose, so the desktop app permission matters just as much as the external webcam itself. Windows camera privacy settings explain the permission page in more detail.

macOS also works at the app level. Apps ask for permission to use the camera, and video apps show a list of cameras they can see. On a Mac with an iPhone, Apple documents using the iPhone as a webcam, so the iPhone can appear as one of those camera options in compatible apps. macOS camera permissions and using an iPhone as a webcam cover the details.

Windows: Start with permissions, then choose the source

Most USB webcams follow the USB Video Class (UVC) standard. Microsoft's system-supplied UVC driver lets a webcam work without a separate manufacturer driver. The driver queries the hardware directly and drives the device itself, so an external webcam should appear as another camera source shortly after you plug it in. See UVC and driverless UVC if you are not sure whether a webcam needs special software.

Before an app can select the external camera, Windows must allow apps to access cameras. Open Start, Settings, Privacy & security, Camera. Turn on Camera access, turn on Let apps access your camera, and turn on Let desktop apps access your camera. The desktop app setting is required for browsers and video calling apps, even if they were installed from a store or from the internet.

• Select Start, then Settings, then Privacy & security, then Camera.
• Turn on Camera access for the device.
• Turn on Let apps access your camera.
• Turn on Let desktop apps access your camera.

macOS: Choose the camera in the app

There is no single macOS preference called Default Camera. Instead, each program that uses video presents a camera menu of its own. You can select your external webcam from that menu, and most apps will continue using it until the camera is disconnected or the choice is changed. For apps without a visible menu, look in the app's preferences under a video, camera, or input section.

If you have an iPhone, macOS supports using it as a webcam through Continuity. Apple's documentation describes this feature as a way to use the iPhone as a webcam on a Mac. When it is active, the iPhone can appear alongside the built-in camera and any USB webcam in the video source list of a supported app.

Video calling apps: Where the camera setting lives

Video calling apps usually give you two places to change cameras. The first is in the call window: look for a camera icon in the meeting controls or in the video preview menu. The second is in the app's settings, often under a Devices, Video, Camera, or Audio and Video section. Before you join a call, open one of those lists and select the external webcam.

If the external webcam is not listed, check the operating system permissions first, then disconnect and reconnect the USB cable. Many webcams are UVC devices, so no driver reinstall is needed, but the app may need to be restarted before it sees the new camera. Some apps also show a live preview while you choose, which can be a useful way to confirm that you are no longer using the built-in camera.

Browsers use a permission flow on top of the same camera list. When a site requests camera access, the prompt may include a camera selector, or the site may have a settings page with one. Choose the external camera there. Browser permissions describe how this request works across common browsers.

Making the external camera stick

If an app continues to start with the built-in camera, the most reliable fix is to make the external webcam the only camera the app can see. On Windows, open Device Manager, expand the camera or imaging devices section, right-click the built-in camera, and choose Disable. After that, the external webcam becomes the only video source available to newly started apps. Disabling the built-in camera walks through the tradeoffs.

When you still need the built-in camera for a different program, keep both devices enabled and set the external webcam separately in each app. A short checklist helps: choose it in your meeting app, in your streaming program, and in any browser profile you use for video calls. App updates or driver re-enumeration can reset these choices, so verify the camera before an important call. If you often run two apps that use cameras at once, review using multiple cameras and apps as well.

Why an external webcam is worth making the default

An external webcam is often worth making the default because of the image quality. Maker spec pages for large-sensor 4K webcams describe sensors from 1/1.8 inch to 1/1.2 inch, including 1/1.5 inch, paired with aperture lenses around f/1.7 to f/2.0. Those components help the camera gather light and can blur the background through depth of field, which is useful when a built-in camera looks flat or noisy.

For everyday meetings, a 1080p webcam is usually a strong choice, and webcams for working from home highlight models with the features people rely on most. If you stream or move around on camera, streaming webcams and AI tracking webcams add features like pan, tilt, and auto framing. For maximum detail, a 4K webcam gives you headroom when you crop or zoom while still leaving the built-in camera disabled. In meeting rooms, Microsoft's Teams Rooms certification is another sign that a peripheral is designed to meet quality standards for audio, video, and the Teams experience.

What to pick for your use

Questions

Will Windows automatically switch to my external webcam when I plug it in?

No. Windows camera privacy settings control whether apps are allowed to use a camera, but they do not choose which camera an app uses. You still need to open the app's video or camera settings and select the external webcam. Most UVC webcams do not need a driver, so the only missing step normally is the in-app selection.

How do I change the camera in Microsoft Teams?

In a call, select the camera icon in the meeting controls and choose the external webcam. In the app settings, look for a Devices section and change the camera there. If the external webcam does not appear, check Windows privacy settings and allow desktop apps to access the camera, then restart Teams.

Can I set a default camera in Windows Settings?

There is no global default camera selector in Windows Settings. The camera privacy page lets you allow or block camera access for apps, but each app decides which camera source to use. To force one camera for everything, disable the built-in camera in Device Manager.

Does macOS let me set a default webcam?

macOS does not expose a system-wide default webcam setting. You pick the camera in each app from its video or camera menu. If you use an iPhone as a webcam, Apple's Continuity documentation explains how to make it available as another camera source on supported Macs.

What should I do if a video app only shows the built-in camera?

Allow camera access in the operating system first. On Windows, turn on Let desktop apps access your camera. On macOS, grant camera permission to the app. Then disconnect and reconnect the external webcam and restart the app. If the camera still does not appear, disable the built-in camera in Device Manager or try a different USB connection.