My camera shows black screen

When I am in the live collaboration room, my camera shows me as a black screen, what should I do?

There are a few possible reasons that had caused this problem, such as:

  • Outdated Operation System (OS) version
  • Incompatible/Outdated Web Browser
  • Webcam not given permission
  • The wrong webcam is selected

This article contains solutions to :

If you are using an iPhone/iPad, you may need to follow these steps to reload your camera instead.

For outdated OS and incompatible/outdated web browser

Update your OS frequently and ensure your web browser is compatible and up to date.

Webcam Not Given Permission

When our website do not have permission to access your webcam, your screen will be black when you enter the live collaboration room.

On the device testing page, click on Allow to give permission to the ClassDo website to access your web camera. (The device testing page will be loaded every time you access the live collaboration room unless it had been previously disabled.)  


In your live collaboration room, you could have accidentally turned your camera off. Hover your mouse over your video screen and Click on the video button to toggle your webcam on. (For Windows/Android users, as the system remembers your previous session settings, the webcam might be disabled due to your previous settings.)

Wrong Webcam selected

You can encounter the problem during the Test your device page or realised it after you had entered your virtual classroom. Fret not as the following steps can help you to solve the problem!

During device testing page

Click on the arrow to show the list of available webcams.

Choose your desired webcam. When the correct webcam is chosen, you should see your image reflected in the videoscreen. Then click on Yes, I can. Else, click on the refresh button next to the Select your webcam input to try again.

In Your Live Collaboration Room

On the top right hand corner of your browser, click on the three dots icon -> Settings. (third from the bottom)

After opening the Settings page of your browser, scroll to the bottom and click on Advanced.

Under Privacy and security, click on Site Settings

Under Permissions,  click Camera.

Ensure that the right webcam is chosen, else click on the camera option and select the correct device. Please also check that the ClassDo website is allowed to access your webcam.

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