DVD Formats

NTSC (US/JAP) 
  Frame Rate either: 29.97, 30, 24, 23.976 (fps) 
  Frame Size: 720x480, 720x486, 704x408

PAL (Europe/Aust) 
  Frame Rate either: 25 (fps) 
  Frame Size: 720x576, 720x576 
  625 lines (576 visible), 25 interlaced frames per second (50 fields per second)

DVD produces exactly 480 scan lines of active picture for NTSC and 576 for PAL. The extra lines contain sync pulses and other information, such as the Closed Captions.