Hi,
Does it happen on Linux or Windows?
If Linux, have you tried webcamoid?
Have you tried on a LiveUSB in case the same thing happens to you?

https://slimbook.com/en/blog/guides-2/post/linux-live-usb-what-is-it-and-what-is-it-used-for-423

Best regards,

Hi Eusabio many thanks for helping.

I am currently on Ubuntu 24.04 and have tried Wecamoid but could not see how to adjust some of the settings.

I have just downloaded Cameractrls from the App Store turned White Balance Auto off and tried the presets that are available there.

The one called "Forest" actually works and so I think my problem is partly solved. 

As expected when I restart the camera is back to it's original setting so I have to fire up Cameractrls and hit the preset to correct matters.
I'm fortunate in that I don't use the camera/video a lot apart from a couple of meetings a week so it's not too painful.

I would be interested if there was a way of changing matters permanently - a bash script?

Thanks again for answering.