DeviceDIYRun the DeviceDIY video-call test to check camera preview and microphone input. Then play an audible speaker test and confirm you hear it. Finally, select the same devices inside your meeting app.
Start with the symptom, not a guess
A successful meeting needs three independent paths: video input, microphone input and audio output. Testing one device does not confirm the others. A pre-call check can prevent last-minute permissions and device-selection surprises.
Use the free DeviceDIY tool to observe what reaches your browser. Compare the result with another application when necessary, and change one setting at a time so you can tell what solved the problem. A browser test offers useful evidence; it is not a substitute for professional hardware diagnostics.
Step-by-step troubleshooting
Check the camera preview
Open the combined video-call test over HTTPS, allow access and confirm the correct camera appears. Watch for a privacy shutter or a different camera feed.
Check microphone input
Speak naturally into the microphone and confirm the input meter reacts. Record and play back a short sample using the dedicated microphone test if you need to check intelligibility.
Confirm speakers or headphones
Play a speaker test tone at a comfortable level and confirm you can hear it. A browser cannot automatically certify physical output.
Match devices inside the call app
Zoom, Teams and Google Meet have their own input and output selectors. Choose the same camera and mic tested in your browser.
Close competing camera applications
If your preview freezes or the camera cannot open, close other calling and recording apps and retry.
Prepare for a real call
Check your internet connection using an appropriate network test, position lighting, ensure power or battery is adequate, and run the meeting app’s built-in preview if available.
What your test results actually mean
Camera and mic both detected
Browser input paths work. Speaker output still requires human confirmation and meeting apps have separate settings.
Camera works but mic does not
Check microphone permission and input selection independently.
Mic works but nobody can hear you in a call
Inspect the meeting app’s microphone selector and mute state.
All browser tests pass but call fails
Investigate app settings, meeting permissions, connectivity and service issues.
What an online test cannot prove
Web pages are limited to the information exposed by the browser, operating system and your permission choices. DeviceDIY cannot directly inspect internal circuits or guarantee that hardware will perform correctly in another application. Some tests require you to look, listen or touch the device and confirm what happened.
Privacy and safety: Only grant camera or microphone permission when you intend to use that test. Avoid excessive sound volume, never force a faulty connector and follow the manufacturer’s safety guidance before attempting physical repairs.
Frequently asked questions
Does this test guarantee Zoom or Teams will work?
No. Browser-based testing confirms local signals under the current conditions; the call application, network and remote service are separate.
Do I need to install anything?
The DeviceDIY browser tests require no download. Your actual video-call provider may have its own requirements.
Why does my camera work in the test but not in the meeting?
The meeting application might select a different camera, lack permission or conflict with another application.
Official references and further reading
For system permissions and browser behaviour, use the official documentation below. Menus and controls can vary by device and software version.
Keep troubleshooting
Ready to check your device?
Use the free interactive test first, then return to the guide if something fails.