Burn DVD of video created on Power Director

Each year l make a video using Power Director, how do l burn it to DVD using my Apple i-mac?

I do have an external DVD drive and up to last year l was able to use 'mi dvd' app but this is no longer available.

Is there a free or reasonably priced app l can get from Apple app store to crate a dvd that can be viewed on various dvd players?