Control Hub can limit guest's virtual background upload within 1MB?

[idunnowhy]

I have tested all the setting and virtual background before the meeting, it work fine.

However, when I actually joining the meeting, the virtual background(1.5MB, 1920*1080, JPG) just doesn't work and Webex not allow me to add it again, I guess its because the size is too big, then I use the smaller size version (700KB, 1280*720, JPG) its work.

Does anyone experienced the same situation? I want to know why and avoid it next time.

[18Simple4]

As an administrator, you can use Control Hub to configure what options users have for applying virtual backgrounds to their meetings and calls in the Webex App. You can control whether people can use organization-wide backgrounds, preset Webex backgrounds, or their own custom backgrounds.

here is a help doc that should help explain better. https://help.webex.com/en-us/article/nw2egbw/Configure-virtual-backgrounds-for-Webex-App-users