Camera not detected: Make sure your webcam is plugged in. On laptops, check that the privacy switch or shutter isn't blocking the lens. Restart your browser and try again.
Permission denied: Click the camera icon in your browser's address bar and change the setting to "Allow." On macOS, go to System Settings > Privacy & Security > Camera and enable your browser.
Black screen or frozen feed: Another app may be using your camera. Close Zoom, Teams, FaceTime, or any other video app, then refresh this page.
Low resolution or blurry: Clean your lens and ensure good lighting. If you're using an external USB webcam, try a different USB port (USB 3.0+ is recommended for HD).