At first, they explain everything about HireVue, and then you click start when you are ready. They also give you practice questions before starting. Then, when you start they give you time (90 seconds) to think before answering the question.
Interview questions [1]
Question 1
To introduce Myself, why i chose them, about me thesis and explain it in details. Then, they asked about something that was challenging for me and how I handled the situation.