Turn off automatic video in a call in teams

Video is turned on automatically when you join or are called from an unscheduled meeting in a channel. You can't change these video settings, but you can turn off your video once you're in the call if you don't need it.

Call type	Video setting
Unscheduled meeting	Video on
Group or 1:1 call from a chat	Asks to join video
Scheduled meeting	Video off