How to Check Your Webcam & Mic Before a Video Interview

The 5-Minute Pre-Interview Tech Check

Interviewers forgive nerves. They're less forgiving of five minutes spent watching you fight your own laptop. The good news: almost every video-call disaster — frozen video, robot voice, 'can you hear me now?' — is preventable with a short routine you run before the call, not during it.

1. Test the webcam — Open the webcam tester in your browser. You're checking three things: the camera works, the framing flatters you, and the lighting doesn't turn you into a silhouette.
2. Test the microphone — Speak normally into the microphone tester and watch the level meter move. Steady mid-range movement is what you want; a flat line or constant peaking means trouble.
3. Test your speakers or headphones — A quick sound check confirms you'll actually hear the questions.
4. Run a speed test — The internet speed test takes seconds. For smooth video you want at least 3–5 Mbps in both directions and ping under 100 ms.
5. Open the meeting app early — Join 10 minutes ahead, check its device settings, and let it update if it insists (apps love updating at the worst moment).

Camera, Framing and Lighting: What Interviewers Actually See

With the webcam preview open, fix these in order of impact:

Light from in front, not behind

A window or lamp behind you turns you into a shadow. Face the window instead, or put a lamp behind your laptop. Even a desk lamp bounced off the wall in front of you beats an overhead light.

Camera at eye level

A laptop on the desk gives the interviewer a view up your nose and makes you look down at them. A stack of books under the laptop raises the camera to eye level and instantly looks more professional.

Frame from mid-chest up

Leave a little space above your head. Sit far enough back that your hands occasionally appear when you gesture — it reads as natural and engaged.

Check what's behind you

Tidy beats blurred, and blurred beats chaotic. If you use a background blur, test it in the app beforehand — some laptops struggle and the effect flickers distractingly.

Sounding Good Matters More Than Looking Good

Research on video calls consistently finds that poor audio damages credibility more than poor video. People will tolerate a grainy picture; they tune out a crackly, echoing voice.

Watch the mic level meter while speaking at your normal volume. If levels are low, move closer to the mic or raise input volume in your sound settings (our mic too quiet guide has the full walkthrough). If your room echoes — bare walls, hard floors — soft furnishings or simply a smaller room will noticeably improve how you sound.

Headphones with a built-in mic are the safest choice: they eliminate echo and keep your voice consistent even when you move. Test them beforehand though — Bluetooth headsets can switch to a lower-quality call profile that sounds surprisingly muffled.

Teams, Zoom and Meet: Check the App's Own Settings

Your computer and your meeting app each choose devices independently — and they don't always agree. In every app, the pattern is the same: open Settings, find Audio/Video, and confirm the correct camera, microphone and speaker are selected from the dropdowns.

In Zoom, use "Test Speaker & Microphone" in Audio settings. In Teams, make a "Test call" from Device settings. In Google Meet, the green-room preview before joining shows camera and mic status. Do this after plugging in any headset — connecting a new device mid-setup often changes the selection silently. If the camera works in your browser test but not in the app, it's almost always a permissions or device-selection issue: our guide to fixing your camera in Teams and Zoom covers every case.

Have a Backup Plan (You'll Interview Better for It)

Knowing you have a fallback does something subtle: it removes the low-level tech anxiety that leaks into your voice. You'll answer questions better when part of your brain isn't monitoring the Wi-Fi icon.

Frequently Asked Questions