How to use OBS Virtual Camera

What OBS Virtual Camera does

OBS Virtual Camera turns the live picture from your OBS Studio scene into a camera other programs can select. You start it in OBS, then choose that virtual camera in a meeting app, browser call, or any tool that lets you pick a webcam. The other app receives the composed OBS frame: your camera crop, images, text, window captures, and filters already applied in the scene.

Virtual Camera is a live video device. Recording and livestreaming are separate OBS actions with their own Start buttons. The virtual camera also leaves microphone choice to the meeting app; that app still has its own audio input setting. Camera permission, a live OBS preview, a live self-view in the call app, and how you look to remote participants are separate checks. A physical backdrop in the room, a background effect inside the meeting app, and a background edited on a still photo are separate from this video path as well.

What you need

Set these up before you expect a meeting app to show the OBS scene. Virtual Camera publishes video only, so this list does not include a microphone level target; none is supplied for this setup.

• OBS Studio installed and able to open
• A scene whose preview already shows the picture you want to send
• A meeting or browser app that lets you choose a camera
• Operating-system camera permission for OBS when a scene source is a real webcam
• Operating-system camera permission for the meeting app so it can open the virtual camera
• OBS left running the whole time the other app uses that camera

Start it and select it in the call app

Work in OBS first so the preview is already correct, then publish that preview as a camera, then point the call app at the new device. On some OBS layouts the same start control also lives under Tools; one start is enough.

• Open OBS Studio and select a scene, or create one.
• Add sources until the program preview matches the layout you want. A common first source is Video Capture Device, set to your webcam. Watch the preview for framing, lighting, and any overlays.
• In the Controls dock, choose Start Virtual Camera. The control should switch to Stop Virtual Camera, which means OBS is offering the virtual device.
• Open the meeting or browser app. If it was already open, restart it or reopen its camera settings so it rescans devices.
• In that app’s camera or video settings, select OBS Virtual Camera, or the similarly named OBS device on your system.
• Watch that app’s self-view. It should match the OBS preview, including crops and overlays.

How you know it worked

Each check answers a different question. Passing one leaves the others untested.

• OBS preview is live and framed as you want: OBS can capture and compose video. This check does not show that any other app is using that video.
• Start Virtual Camera stays active, with Stop Virtual Camera visible: OBS is publishing the virtual device. This check does not show that the meeting app selected it.
• The meeting app’s self-view matches the OBS preview: that app opened the virtual camera and is receiving frames. This check does not measure network quality, encoding, or what remote participants see.
• A second person on a test call confirms they see the OBS scene: that is the check for the picture others receive. Local self-view can still differ from the encoded call.

These steps leave microphone detection, input-meter movement, speech intelligibility, speaker playback, and overall call quality untested. Choosing the virtual camera in the meeting app does not change that app’s microphone. Measured input-level targets for this setup are not in the source material for this article.

If the meeting app shows a black frame, a frozen frame, or your physical webcam, Virtual Camera is stopped, OBS has closed, or the app is still pointed at another device. Confirm OBS is open, Virtual Camera is started, and the app’s camera menu is on the OBS device. Some apps keep the last physical camera until you change the setting and reopen the preview.

Permissions, microphone and backgrounds

If a Video Capture Device source fails inside OBS, grant camera access to OBS in the operating system’s privacy settings, then reopen the source properties and pick the webcam again. Virtual Camera can still start while that source is empty; the published picture will then miss the camera. If the meeting app never lists an OBS camera, grant that app camera access and restart it. On some systems the OS must also allow virtual camera devices or camera extensions before the device appears. Exact toggle names vary by operating system and OBS version, which this article does not pin to a tested build.

Keep the meeting app’s microphone set to your headset, built-in mic, or a dedicated virtual audio device if you already use one. A moving input meter shows the app is detecting audio activity. A short spoken check with another person is what shows the words are intelligible. Those audio checks are independent of whether Virtual Camera is running.

Choose the background method that matches the job. A physical background is the wall, screen, or set behind you in the room. A virtual call effect is a replacement the meeting app applies to its own camera feed. An edited photo background is a change to a still image in an image editor. OBS can change the live scene with filters such as chroma key on a green screen, or by covering the canvas with images and captures, and Virtual Camera then sends that already-composed video. Those OBS filters are part of the scene. They are a different control from the meeting app’s background effect, and they do not edit a saved photo.

Limits and the next action

Leave OBS running for the whole call. Stopping Virtual Camera or quitting OBS cuts the video the other app is using. Give the physical webcam to OBS only, and let other apps use the virtual camera so two programs are not fighting for exclusive access to the same device. If the device list shows more than one OBS camera, pick the one that updates when you change the OBS scene.

Menu names and the virtual camera’s device label can differ by OBS version and operating system. This walkthrough does not include version-specific installers, plugin requirements, or lab results for a particular meeting app. If the picture is correct in OBS and in the call preview while sound is wrong, open the meeting app’s microphone settings and test input activity there. If you only need a simple in-call backdrop, the meeting app’s own background control can be enough. If you need a still-image background for a photo, use an image editor; Virtual Camera changes live video only.