Your Video Editor will master the DVD in either NTSC or PAL which will depend upon the country you are distribruting your DVDs. If the DVDs will be played in the U.S., the editor should master the DVD in NTSC format. This format is used United States and most of North America. If the DVDs will be played in Europe, you will need to master the DVD in PAL format. For more information visit:
NTSC and Countries on this system:
http://en.wikipedia.org/wiki/NTSC
PAL and Countries on this system:
http://en.wikipedia.org/wiki/PAL