Zoom app for iOS.
Ah, The Hardest Problem in interface design. How to combine the status ("muted", "no video") with the action ("unmute", "start video")?
Because right now this doesn't make much sense. To unmute, click on a red crossed microphone. To start a video, click on a red, clearly disabled camera.
The answer is don't. Don't mix status and action. Separate them enough to reduce ambiguity.
Yeah, and don't use navigational menus for actions and status in the first place. These elements are for navigation.
Zoom is a surprisingly annoying on iOS. Even without video, like on this screenshot, the app hides all the buttons after 3 seconds of inactivity, so that the user can enjoy this informative black screen with a huge "nothing here" symbol.