OBS Webcam Background: How to Add, Replace or Remove It

OBS Studio can put a new background behind you on webcam, but how you do it depends on your setup. With a green or blue screen, use OBS's built-in Chroma Key filter and place an image or video source behind your camera. Without a backdrop, you need a background removal filter, either a third-party plugin or a hardware-specific filter. Then stack your chosen background underneath. To use the result in Zoom, Teams, Meet or another call app, start OBS's Virtual Camera and select it as the camera in that app.

First, which kind of background do you mean?

People mean several different things by an OBS webcam background, and each has a different fix:

• Replacing what is physically behind you with an image or video: chroma key (with a colored backdrop) or a background removal filter (without one).
• Blurring your real room: possible only with a removal or segmentation plugin that offers blur. Core OBS has no one-click blur for this.
• Putting graphics around your webcam, such as a frame, a branded panel or a name banner: this is a graphic overlay and needs no keying at all.
• Changing the background of a photo you already took: that is a photo editing task, not an OBS task.
• Using the background effect built into your call app: many call apps have their own, which you can use without OBS. Running both at once can produce odd edges or doubled effects.

Comparing the main options

Method | What you need | Best for | Main trade-off

Chroma Key filter (built into OBS) | A green or blue backdrop and even lighting | The cleanest, most predictable cutout | You need physical space and a backdrop

Background removal plugin | A third-party OBS plugin installed separately | Replacing or blurring the background with no backdrop | Edges are less precise, and it adds processing load to your computer

NVIDIA Background Removal filter | Supported NVIDIA graphics hardware and NVIDIA's effects components | Backdrop-free removal on compatible PCs | Only works on specific hardware

Graphic overlay (image above the webcam) | A PNG image with transparency | Frames, borders, logos, name labels | Does not change what is behind you

No performance measurements, hardware requirement lists or version details were supplied for this article. Check the current OBS documentation or the plugin's own page for exact compatibility before you rely on any of these options.

Add a background with a green screen (Chroma Key)

• 1. In the Sources panel, click + and add a Video Capture Device, then select your webcam.
• 2. Click + again and add an Image source (or a Media Source for a video loop), then choose your background file.
• 3. Drag the background source below the webcam in the Sources list. Sources lower in the list appear behind sources above them.
• 4. Right-click the webcam source, choose Filters, and under Effect Filters click + and add Chroma Key.
• 5. Set Key Color Type to match your backdrop, usually Green.
• 6. Raise Similarity until the backdrop disappears, then adjust Smoothness and Key Color Spill Reduction to clean up edges and remove the colored fringe around you.
• 7. Resize and position the webcam and background in the preview until they line up.

Keying quality depends mostly on the backdrop, not the filter. Light the screen evenly, smooth out wrinkles and shadows, leave some distance between you and the screen, and avoid clothing close to the key color. Otherwise parts of you will turn transparent.

Add a background without a green screen

Core OBS cannot tell you apart from your room without a colored backdrop, so you need a filter that detects a person:

• Community background removal plugin: install it following its instructions and restart OBS. Then open Filters on your webcam and add the plugin's filter, which typically offers removal and sometimes blur. Place your background source beneath the webcam as in the chroma key steps.
• NVIDIA Background Removal: on compatible NVIDIA systems with the required effects components installed, this filter can appear in the webcam's Filters list. If it is not listed, your system likely doesn't meet its requirements.

Plugins are third-party software, so download them only from the developer's official release page or the OBS forums. Expect softer edges than chroma key, especially around hair, hands and fast movement. A plain, well-lit room and a light that separates you from the wall usually help detection.

Add a graphic overlay around your webcam

• 1. Prepare a PNG with a transparent area where your camera should show through, such as a frame, border or lower-third banner.
• 2. Add it as an Image source and drag it above the webcam in the Sources list so it sits on top.
• 3. Resize the webcam to fit the transparent window in the frame.
• 4. Optionally, add a solid color or image source at the bottom of the list as a backdrop for the area outside your camera.

To crop or round the camera shape instead of framing it, the webcam's Filters menu includes Crop/Pad and Image Mask/Blend. Image Mask/Blend uses a mask image to define which part of the video stays visible.

Use your OBS background in a video call

• 1. Set up your scene in OBS with the webcam, filters and background arranged as you want them.
• 2. Click Start Virtual Camera in the Controls panel.
• 3. Open your call app's video settings and choose OBS Virtual Camera as the camera.
• 4. For browser-based calls, select the virtual camera in the site's camera permission or settings. If it isn't listed, fully close and reopen the browser.
• 5. Leave OBS running for the whole call. Stopping the virtual camera or closing OBS cuts the feed.

Turn off the call app's own background or blur effect while using OBS, so the two don't conflict. Many call apps also mirror your self-view, so text on your background may look reversed to you. That is normal, and other participants usually see it the right way around.

Troubleshooting common problems

• Webcam shows black in OBS: another app may be holding the camera. Close other camera apps, then deactivate and reactivate the source, or remove and re-add it.
• No camera on macOS: allow OBS under Camera in Privacy & Security settings, then restart OBS.
• Virtual camera missing in the call app: start the virtual camera first, then restart the call app or browser. On macOS, you may need to approve OBS's system extension when prompted.
• Background covers you completely: the background source is above the webcam in the Sources list. Drag it below.
• Patchy or flickering chroma key: improve backdrop lighting first, then fine-tune Similarity and Smoothness.
• Rough edges with a removal plugin: add light on your face and shoulders, simplify what's behind you, and try the plugin's threshold or smoothing settings if it has them.
• Lag or dropped frames: removal filters add load. Try a lower webcam resolution or frame rate, or close other demanding programs.

Check the result before an important call

The OBS preview shows only your local composite. It does not tell you how the background will look after the call app compresses the video, how the app handles the virtual camera, or how it performs on your connection. To check those, do a short test call or a recording in the same app you'll use, ideally with someone who can tell you whether your edges, motion and background look clean on their end.