How to check your webcam and mic before a call
- Camera: press Start camera and allow access. The preview shows the resolution and frame rate your camera is actually delivering to the browser. If several cameras are connected, pick one from the list.
- Microphone: press Start microphone and talk at normal volume. Speech should push the level bar about halfway; a bar pinned at the end, or a verdict of “Too loud / clipping”, means it is too loud.
- Recording: press Record 5 seconds, then play it back to hear exactly what other people hear — echo, hiss and distance from the mic become obvious.
- Speakers: play the left, right and stereo-sweep tones. If a tone comes from the wrong side, your headset may be reversed or set to mono.
What the numbers mean
Resolution and FPS
Most laptop webcams deliver 1280×720 (720p) at 30 frames per second. 1920×1080 (1080p) is sharper, but Zoom, Meet and Teams usually send 720p or less depending on your connection. A frame rate well below 24 FPS often means poor lighting — the camera lengthens exposure in the dark — or that another app is using the camera.
Microphone level
The meter shows the loudest part of your voice relative to full scale. Comfortable speech peaks around the middle of the bar. If it barely moves, check the input device in your system settings, move closer, or raise the input gain.
Common fixes
- "Permission denied": click the camera icon in the address bar and allow camera and microphone for this site, then reload.
- Black preview: close Zoom, Teams or any other app that may be holding the camera, or check for a physical privacy shutter.
- Wrong microphone: pick the correct device in the list — a headset and a laptop mic often both appear.
- No sound from one side: check the headset is fully plugged in and that mono audio is turned off in accessibility settings.
Privacy
Camera and microphone streams stay on your device. Recordings exist only in this browser tab's memory and are discarded when you leave the page. Access stops as soon as you press Stop or close the tab.