The video tutorial explains the development of an app using Firebase ML Kit for face detection. It covers the app's features, including a simple user interface, permission requests, and the ability to toggle between cameras. The tutorial demonstrates selecting and cropping images, detecting faces, and analyzing features like smiling probability and eye openness. It also explores handling multiple faces and introduces new UI elements for displaying information.

What features will the app utilize from Firebase?

How does the app determine if a person is smiling in a photo?

What happens when the app is first opened?

Describe the process of selecting a photo within the app.

What information does the app provide after detecting faces in a photo?

How does the app handle multiple faces in a single photo?

What is the significance of the probabilities displayed for each face?