What is NTSC & PAL?
NTSC stands for
National Television System Committee.
NTSC is a color TV standard developed in the United States in 1953
by National Television System Committee. NTSC is used in most of
the American continent countries and in various Asian countries.
Rest of the world uses either some variety of PAL or SECAM standards.
NTSC runs on 525 lines/frame and it's vertical frequency is 60Hz.
NTSC's framerate is 29,97 frames/sec.
PAL was introduced
in the early 1960's in Europe , stands for Phase Alternating Line.
It has better resolution than in NTSC, having 625 lines/frame, but
the framerate is slightly lower, being 25 frames/sec.
PAL is used in most of the western European countries (except France
, where SECAM is used instead), Australia , some countries of Africa
, some countries of South America and in some Asian countries.
The typical video resolution for an NTSC disc is 720 X 480, while
a PAL disc is 720 X 576. The specifications for video files on a
DVD can be any of the following:
Up to 9.8 Mbit/s (9800 kbit/s) MPEG-2 video
Up to 1.856 Mbit/s (1856 kbit/s) MPEG-1 video
PAL:
720 X 576 pixels MPEG-2 (Called full D1)
704 X 576 pixels MPEG-2
352 X 576 pixels MPEG-2 (Called Half-D1, same as the China Video
Disc standard)
352 X 288 pixels MPEG-2
352 X 288 pixels MPEG-1 (Same as the VCD Standard)
NTSC:
720 X 480 pixels MPEG-2 (Called full D1)
704 X 480 pixels MPEG-2
352 X 480 pixels MPEG-2 (Called Half-D1, same as the China Video
Disc standard)
352 X 240 pixels MPEG-2
352 X 240 pixels MPEG-1 (Same as the VCD Standard)
All MPEG video must be 25 frames per second on PAL DVDs. On NTSC
DVDs MPEG-2 video can be either 29.97 frames per second or 23.976
frames per second, (with the player repeating frames via 3:2 pulldown
to achieve NTSC's standard 29.97 frames per second) while MPEG-1
video can only be 29.97 frames per second. Interlacing is only supported
for MPEG-2 video on both PAL and NTSC DVDs. 16:9 aspect ratio anamorphic
video is only supported at 720x576/480, and all resolutions support
4:3 aspect ratio video.
NTSC & PAL Software Review:
|
