I interviewed last week and it was a very conversational interview with good energy—they started by letting me know they were on my side and weren’t trying to interrogate or trick me, haha. I’d be ready to discuss the creative samples you submitted as well as your own strengths/weaknesses/inspirations as a writer/director. They also asked why an MFA now, what do you know about the program and what attracted you to it, etc. Nothing that surprising! Be yourself and know yourself and your application well enough to speak to these things and you should be good