NTSC (National Television Standards Committee) is the oldest existing standard, developed in the USA and first used in 1954. It's parameters are Lines: 625

Frame rate: 29.97 Hz

Picture resolutions: 720 x 480; 704 x 480; 352 x 480; 352 x 240

The Countries that support NTSC video are as follows:

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

PAL (Phase Alternating Line) was developed in 1967 by the United Kingdom & Germany.

Lines: 525

Frame rate: 25 Hz

Picture resolution: 720 x 576; 704 x 576; 352 x 576; 352 x 288

The countries that Support PAL are:

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, Luxemburg, Malawi, Malaysia, Maldives, Malta, Mozambique, Namibia, Netherlands, New Zealand, Nigeria, Norway, Oman, Pakistan, Papua New Guinea,Paraguay, Portugal, Qatar, Rumania, Seychelles, Sierra Leone, Singapore, Somalia, South Africa, Spain, Sri Lanka, Sudan, Swaziland, Sweden, Switzerland, Syria, Tanzania, Thailand, Turkey, Uganda, United Arab Emirates, United Kingdom, Uruguay, Yemen, Yugoslavia, Zambia, Zimbabwe.

SECAM (Sequential couleurmmoire) was developed in France in 1967. SECAM uses the same bandwidth and resolution (720x576) as PAL but transmits the color information sequentially. Take note that only a handful of products support SECAM.

The countries that support SECAM are as follows:

Afghanistan, Benin, Burkina Faso, Bulgaria, Burundi, Central African Republic, Chad, Congo, Czechoslovakia, Djibouti, Egypt, France, French Guiana, Gabon, Greece, Guadalupe, Guinea, Gyprus, 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.