If you want the absolute best quality, export your video out to tape. Take it to a post house that has a Terenex and have them do the conversion. You can have them transfer it to new tape (but you’ll need your own PAL equipment to ingest it into your computer), or you can maybe send them a hard drive that they can load a file onto.
If you don’t want to go that route, you’ll need some Compression software to do the conversion. A PAL DVD is 720X576 @ 25p or 50i
