How to Test Your Webcam in Zoom

Zoom lets you see your own camera image before you start or join a meeting. You can confirm that the right device is working and that your picture looks the way you expect. This guide focuses on the Zoom desktop app and adds notes for the web client and mobile devices.

Before you start

You need either the Zoom desktop app, installed and signed in, or a supported browser if you use the web client. The video preview in the app's settings displays the camera feed on your own device. Joining any meeting, including a test meeting, connects you to Zoom's service. If privacy or data handling matters for your situation, check your organisation's policy and Zoom's current documentation instead of assuming how video is processed.

• Close other apps that might be using the camera, such as other calling, streaming or recording software.
• If you use an external webcam, connect it directly to the computer and give the system a moment to recognise it.
• On a laptop, check for a physical privacy shutter or a keyboard key that turns the camera off.
• Make sure the operating system allows Zoom to use the camera. The permission steps are covered below.

Step-by-step instructions

Preview your camera in the Zoom desktop app

• Open the Zoom app and sign in.
• Open Settings from your profile picture or the gear icon on the home screen. Its exact location can differ between app versions.
• Go to the video section of Settings. Depending on your version it may be called Video or Video & effects. A live preview of your camera should appear.
• If more than one camera is listed, use the camera drop-down to select the one you want.
• If your version offers video options such as HD, mirroring or low-light adjustment, try them and watch how the preview changes. You can switch any of them back later.

Check your video before or during a meeting

When you join a meeting, Zoom can show a video preview window first if that option is turned on in your video settings. During a meeting, click the small arrow next to the Start Video or Stop Video button to switch cameras or open video settings. Zoom also offers a test meeting where you can check video and audio without other participants. Because it is a real session, it goes through Zoom's service.

Web client and mobile devices

In a browser, the browser asks for camera access the first time Zoom needs it. If you dismissed or blocked that request, change it in the site permission settings, which are usually opened from the icon next to the address bar. On phones and tablets, the Zoom app shows your camera once you turn video on. Camera access there is controlled in the device's app permission settings.

Allow camera permission in the operating system

• macOS: open System Settings, then Privacy & Security, then Camera, and make sure Zoom is switched on. Older macOS versions use System Preferences with a similar path. Restart Zoom if the change does not take effect immediately.
• Windows 11: open Settings, then Privacy & security, then Camera. Turn on camera access, and turn on the option that lets desktop apps access your camera.
• Windows 10: open Settings, then Privacy, then Camera, and turn on the same two options.

Check the output

A working camera shows a live, moving image in the preview. You should not see a black frame, a frozen picture or your profile avatar. Wave a hand to confirm the feed is live, and make sure the image comes from the selected camera you intended, for example the external webcam and not the built-in one.

The preview shows what your camera captures, which is not always exactly what other people receive. The resolution and frame rate that participants see depend on your network connection, account and meeting settings, and their own devices. Turning on HD in your settings does not guarantee HD delivery.

Lighting often matters more than the camera itself. Face a window or lamp so the light falls on your face. A bright light behind you tends to turn your face into a dark silhouette. Place the camera roughly at eye level and leave a little space above your head in the frame.

To see something closer to what others receive, join Zoom's test meeting or make a short call with a colleague and ask how your video looks to them.

Common problems and next steps

Black screen or no camera detected

Start with the physical causes: check the privacy shutter and any camera key on the keyboard. Next, close other apps that might be holding the camera, choose a different entry in Zoom's camera drop-down, then restart Zoom. If the camera is still missing from the list, reconnect it or try another USB port. Then check whether the operating system detects it at all.

Zoom is blocked from the camera

If the system camera permission is off, Zoom cannot show an image even when the camera works. Turn the permission on using the steps above, then restart Zoom. On a work or school device, the camera may be restricted by your administrator, in which case your IT team has to change the setting.

Wrong camera, mirrored or poor image

• Wrong camera: pick the correct device in the camera drop-down. Virtual cameras created by other software can also appear in that list.
• Mirrored image: the mirror option changes only your own view. Other participants are not affected by it.
• Dark or grainy picture: add light in front of you, try the low-light option if your version has it, and clean the lens.
• Choppy video: close apps that use a lot of bandwidth. Many webcams also lower their frame rate in dim light, so better lighting can help with smoothness too.

If the problem continues

To find out whether the problem lies with Zoom or with the camera, test the same camera in another app or in a browser-based webcam test. If the camera works elsewhere, update Zoom and check its video settings again. If it fails everywhere, look at the camera's connection, its drivers or the manufacturer's support resources.