So i’ve created a matinee fly through of my level, how do I record this? Screen capture software? or is there a recorder built in?
Take a look at the existing threads about that topic: https://answers.unrealengine/search.html?q=record+matinee&type=question&lang=en&sort=relevance 
or:
Thanks, when I click movie it just records form player start, do you happen to know how to make the matinee play on start?