i have a macbook pro and want to sit an abrsm online exam which i need to record using a video cam. the video that comes with the macbook pro goes off when you open another programme. can anyone recommend which one will work best with the macbook

Hello Littleweed26,

Welcome to Apple Support Communities. This may be due to the app you're using not having camera permission. Try the following steps from If your built-in camera isn’t working on your Mac - Apple Support.

"Give apps permission

If your Mac is using macOS Mojave or later, choose which apps can use your built-in camera:

1. Choose Apple menu  > System Preferences, then click Security & Privacy.
2. Click the Privacy tab, then click Camera in the sidebar.
3. Select the checkbox next to the apps that you want to use your camera in. You might be prompted to quit and reopen an app before it can use your camera."

The other sections in that article may offer further assistance if this continues.

Have a great day!