Note: This document comes from the Mac Online Help document. It and many other helpful tips are available on your computer by choosing Mac Online Help from the Help menu.
You use iDVD to create DVD discs with video that is in either NTSC or PAL
format. You cannot create a disc that has both formats.
NTSC format (29.97 frames per second) is used in the United States,
Canada and Japan.
PAL format (25 frames per second) is used in most European countries.
By default, iDVD is set to the correct format for your region.
To change the video format for a new iDVD project:
Choose Preferences from the iDVD application menu and select NTSC or PAL.
You cannot convert an iDVD project from one format to another. For example, if you want to make a copy of a disc you created in the United States (using NTSC video) and send it to relatives in Europe, you must export all of the movies from iMovie or Final Cut Pro in PAL format. Then you must set iDVD to PAL and create a new project.