Test your webcam directly in your browser. Check camera resolution, frame rate, and if your camera is working properly.
If your webcam doesn't work, check: (1) Browser permissions — click the camera icon in the address bar and allow access. (2) Another app may be using your camera — close video call apps. (3) Privacy cover — some laptops have a physical camera shutter. (4) Driver issues — update your webcam drivers in Device Manager (Windows).
Browser permission blocked is the most common issue. Click the camera icon in your address bar and select Allow. If another app like Zoom or Teams is using your camera, close it first. On Windows check Settings > Privacy > Camera. On Mac check System Settings > Privacy > Camera.
720p (1280x720) is acceptable for casual video calls. 1080p (1920x1080) looks noticeably sharper for professional meetings and streaming. 4K webcams exist but most platforms cap at 1080p, making the extra resolution rarely worth the cost.