Can Two Apps Use a Webcam at the Same Time?

The Short Answer

Typically, no: a webcam can only be used by one app at a time. The camera is a single hardware device with one video stream, and the operating system arbitrates which application may capture it. Most operating systems assign the camera to a single app to avoid data conflicts and frame loss.

This exclusivity is not a deliberate limitation of the webcam hardware itself; it's the simplest way for the OS to manage a shared resource. However, you can work around this by using virtual camera software that captures the webcam and re-presents it as a second virtual device, which other apps can then access.

Why a Webcam Is Locked to One App

The core reason lies in the USB Video Class (UVC) standard, which most webcams implement. The UVC specification defines a single video control interface and one or more video streaming interfaces. The system-supplied UVC driver queries the hardware to obtain its capabilities and then drives the device without a proprietary driver. Because the camera presents itself as one source with one stream, the OS must decide which app can read from it at any given moment.

Granting exclusive access is a deliberate design choice. If two apps were allowed to capture the same stream simultaneously, there could be race conditions, inconsistent frame timestamps, and increased CPU and bandwidth usage. Operating systems solve this by locking the camera to the first app that opens it, and subsequent apps that try to access it receive an error or a blank feed.

How Windows Manages Camera Access

On Windows, camera access is governed by privacy settings. You can find these under Settings > Privacy & security > Camera. The system lets you control access at the device level and for individual apps. There's a toggle for overall camera access, a toggle for 'Let apps access your camera,' and, for Microsoft Store apps, you can turn access on or off per app.

Desktop apps, which include browsers and video conferencing clients, are treated differently. They require the 'Let desktop apps access your camera' master switch to be on. Windows does not provide a per-app list for desktop apps; if a desktop app isn't in the list, it might still have access because that master switch is enabled. This permission system is about which apps are allowed to use the camera, not about how many can do so simultaneously.

Workarounds: Virtual Cameras and Multiple Webcams

If you need to use one webcam in two apps at the same time, you have a few practical options. Each approach has trade-offs in convenience, cost, and complexity.

• Use a virtual camera: Software like OBS Studio can capture the physical webcam and output it as a virtual camera. Other apps can then select that virtual camera, allowing multiple apps to see the same feed. See our virtual webcam explainer and OBS Studio settings guide for setup details.
• Use the webcam's companion software: Some webcam makers provide software that can adjust exposure, focus, and output format. For example, Elgato's Facecam Pro is supported by Camera Hub, which can output video in H.264 or MJPEG formats. Check whether the software includes a virtual camera output; this can simplify routing.
• Add a second webcam: If you need different angles or want to dedicate one camera to each app, using two physical webcams is the most straightforward. Operating systems support multiple cameras, so each app can select a different one. This is common in streaming setups where you have a face cam and a desk view.
• Use a capture card: For professional setups, an HDMI capture card can turn a camera's output into a USB video device. You can then route that feed to multiple apps via software. This adds complexity but can be necessary for broadcast-grade production.

What to Look For in a Webcam if You Need Multi-App Use

If you frequently need to share a single webcam across multiple apps, a webcam with good software support is helpful. Some models, like the Razer Kiyo Pro Ultra, come with software that lets you adjust settings and can integrate with streaming tools. Others, such as the OBSBOT Tiny 2, offer a USB 3.0 connection that can transmit 1080p without compression, which can reduce latency when routing through a virtual camera.

For most users, a standard 1080p webcam will work fine with a virtual camera. The virtual camera runs at the same resolution and frame rate as your original feed, so a 1080p60 model will give you smooth output even if one app is recording and another is streaming. See our best 1080p 60fps webcams and best 4K webcams for options.

When a Second Camera Makes Sense

If your workflow involves multiple camera angles, such as a face cam and a desk view, relying on one webcam and a virtual camera becomes limiting. Buying two webcams is simpler and cheaper than trying to split one feed. Both cameras can be used as separate sources in OBS, and you can switch between them or show them side-by-side. This also lets each app use a different camera if you need that.

For example, you might point one webcam at your face for video calls and another at a whiteboard for presentations. Each app can pick its own camera, and you don't need any virtual camera software. This approach is common in hybrid classrooms and product demos. For help choosing cameras, see our best webcams for streaming or best 1080p webcams.

What to pick for your use

Questions

Can I use the same webcam in two video call apps at the same time?

Generally no. The operating system gives exclusive access to one app. If you try to open a second app, it will either show an error or a black image. Use a virtual camera to share the feed.

Does Windows allow two apps to use the camera simultaneously?

The Windows permission system lets you control which apps can access the camera, but it doesn't enable simultaneous use. Even if two apps have permission, the OS still gives the camera to only one at a time. Virtual camera software is the solution.

What is a virtual webcam and how does it help?

A virtual webcam is a software device that appears as a camera to other apps. It captures a real webcam feed and re-presents it, so multiple apps can select the virtual camera and receive the same video. OBS Studio includes a virtual camera feature.

Do all webcams support virtual camera output?

No. Virtual camera functionality is provided by software, not the webcam itself. Most webcams work with OBS's virtual camera because they implement UVC. Check if your webcam's companion software has a virtual camera option.

Is it better to use two webcams instead of one with virtual software?

If you need different angles or want to avoid additional software, two webcams are simpler. Each app can use a different camera. If you need the exact same feed in two apps, a virtual camera is more efficient.

Can I use a webcam with OBS and another app at the same time?

Yes, if you use OBS's virtual camera. OBS captures the physical webcam and outputs a virtual device that other apps can use. This is a common setup for streaming while also recording or previewing.