This may not be the correct place for this, if so please point me elsewhere.

My other half doesn't have broadband, so I'm looking to write dvds so we can watch then on a dvd player.

To this end I've gotten a copy of ashampoo and downloaded some films (.mkv files) and I'm now looking to copy them onto dvds. Now I know I can't just copy the files on, and the software's asking for mpeg files only.

Has anyone come across - or know how to actually convert and write properly? A guide perhaps?

I know it's old technology, but it's gotta be better than just watching the crap on free tv. TIA.

Edit: many thanks to all for the great - and varied answers. Certainly lots of info to 'chew' on.