how can i burn a dvd from iMovie on iMac on a external dvd burner
I have a 31 minute holiday movie in iMovie. i would like a copy on dvd to send to grand parents.I have an lacie dvd burner connected to my iMac . but because it has no idvd i can not find a way of doing this. please help
iMac (21.5-inch, Mid 2014), OS X El Capitan (10.11.4)