From the self-view image, you can select a blurred background or one of the three background images. You can change the background before or when you're already in a call or a meeting.
To enable video backgrounds, go to Settings, select Video Backgrounds, and toggle Backgrounds On.
The blurring may not cover the background entirely and possible sensitive information may be visible to others in the video meeting.
Tap the Selfview icon.
Tap the self-view image to open background options. Select blurred or image background.
Tap the screen outside the controls when you are done.
To close self-view, tap the Selfview icon again.