Worldwide Analog Video Standards: NTSC PAL SECAM

In the current state of analog television, there are three television standards (also called norm) in the world: NTSC, PAL, and SECAM. At present, the TV norm in different countries is not the same, the difference of the broadcast video standard mainly depends on the different frame frequency, decomposition rate, signal bandwidth, carrier frequency, and so on.

NTSC (National Television Standards Committee) is the earliest existing television standard, developed in the United States and first used in 1954. Its parameters are as follows:

Line: 625

Frame rate: 30 FPS

Image resolution: SD 720*480 (standard screen), 30 FPS, HD 1920*1080 (widescreen), 30 FPS

The following countries support NTSC video:

Japan, Mexico, Panama, Peru, the Philippines, Puerto Rico, South Korea, Suriname, Taiwan, Trinidad and Tobago, the United States of America, Venezuela, Antilles, the Netherlands, the Bahamas, Barbados, Belize, Bermuda, Bolivia, Burma, Canada, Chile, Colombia, Costa Rica, Cuba, the Dominican Republic, El Salvador, Ecuador, Grenada, Guatemala, Honduras, Jamaica.

PAL (Phase Alternating Line) was developed by the UK and Germany in 1967. The PAL standard uses a wider channel bandwidth than the NTSC, resulting in better image quality. Its parameters are as follows:

Line: 525

Frame rate: 25 FPS

Image resolution: SD 720*576 (standard screen), 25 FPS. HD 1920*1080 (wide-screen), 25 FPS

The following countries support PAL:

Algeria, Andorra, Angola, Argentina, Australia, Austria, Bahrain, Bangladesh, Belgium, Botswana, Brazil, Brunei, Cameroon, China, Denmark, Ethiopia, Fiji, Finland, Germany, Ghana, Gibraltar, Hong Kong, Iceland, India, Indonesia, Ireland, Israel, Italy, Jordan, Kenya, Kuwait, Lesotho, Liberia, Luxembourg, Malawi, and Malaysia, the Maldives, Malta, Mozambique, Namibia, the Netherlands, New Zealand, Nigeria, Norway, Oman, Pakistan, Papua New Guinea, Paraguay, Portugal, Qatar, Romania, Seychelles, Sierra Leone, Singapore, Somalia, South Africa, Spain, Sri Lanka, Sudan, Swaziland, Sweden, Switzerland, Syria, Tanzania, Thailand, Turkey, Uganda, United Arab Emirates, the United Kingdom, Uruguay, Yemen, Yugoslavia, Zambia and Zimbabwe.

SECAM (Sequential Couleurmmoire), developed in France in 1967, uses the same bandwidth and resolution (720x576) as PAL, but transmits color information Sequential. Note that only a few products support SECAM.

The following countries support SECAM:

Bulgaria, Afghanistan, Benin, Burkina Faso, Burundi, Central African Republic, Chad, Congo, Czechoslovakia, Djibouti, Egypt, France, French Guiana, Gabon, Greece, Guadalupe, Guinea, Cyprus, Haiti, Hungary, Iran, Iraq, ivory coast, Lebanon, Libya, Madagascar, Mali, Martinique, Mauritius, Mauritania, Monaco, Morocco, Niger, North Korea, Poland, Russia, Rwanda, Saudi Arabia, Senegal, Syria, Togo, Tunisia, Vietnam, Western Samoa, Zaire