Test your microphone and camera
When you join a Zoom or Google Meet call, the web application needs to capture your raw camera and microphone data. On the web, this is accomplished using the navigator.mediaDevices.getUserMedia() API.
Because accessing a user's camera is a massive privacy risk, this API is strictly gated by the browser architecture.
In a real video call, the MediaStream captured from your camera is attached to a WebRTC Peer Connection, which encodes and transmits the video over the internet to other participants.
This testing tool does not do that. It requests access to your devices, but routes the stream directly back to the HTML <video> element on your screen. Because the stream never leaves your device's RAM, there is zero network latency, and your privacy is mathematically guaranteed.
What happens if a website tries to access your camera using 'getUserMedia()' over an unencrypted HTTP connection?
