Ability to change camera option in mobile video call

I recently went deaf, that being said, video calls are absolutely necessary in life now. I want to add a feature that allows you to change your camera input on mobile app. For example, the Google Pixel 4Xl also had an IR camera on the phone for facial unlock. However, I can use other apps to select this as a camera to take photos or record videos. Additionally, I've plugged in logitech cameras to my phone, GoPros and other camera devices like the Leap Motion (Also IR). Being able to use the IR camera would allow me to sign in the dark and this could revolutionize the discord app for all Deaf and HoH community.