1. U.S., U.S. Territories, Canada, and Bermuda
2. Japan, Europe, South Africa, and the Middle East, including Egypt
3. Southeast Asia, East Asia, including Hong Kong
4. Australia, New Zealand, Pacific Islands, Mexico, Central America, South America, and the Caribbean
5. Former Soviet Union, Indian subcontinent, Africa, North Korea, and Mongolia
6. China

NTSC and PAL are two main television broadcast standards used worldwide. The systems project color images at different frequencies and they are not compatible with each other.

NTSC is the acronym of the National Television System Committee and this standard is used on North America, Canada, Mexico and Japan.

PAL stands for Phase Alternating Line and it is the TV standards used for Europe, Hong Kong and the Middle East.

DVDs have to match the television standard in order to have proper color display. If a TV is PAL only, it will display NTSC pictures in black and white, and vice versa. This problem can be easily solved by adjusting DVD player to match the system or changing the default system to auto so that it will switch to the right system automatically.

Films are shot with high resolution and widescreen to be shown in movie theatres. When the film is being watched at home, the domestic TV may not be able to show the movies as it is in the theatres. Pictures may be compressed or stretched. The film industry has come up with several formats to convert wide screen movies so that they can be viewed on home TV's.

An Anamorphic DVD allows pictures to be re-stretched back to full resolution at full size. A DVD player has a built in function that allows it to re-stretch an Anamorphic movie out to full size to be shown on a wide screen TV.

Depending on the ration of the TV (4:3 / 16:9), a full screen determines how the movie will be stretched to fit the whole screen.

With Letter-boxing. The picture is shrunk to fit the whole thing in and black bars are added at the top and bottom to fill the gaps. If your TV is not wide enough to take an Anamorphic image, then the image will just be Letterboxed and look like any widescreen movie.

DTS (Digital Theatre System) is a media delivery format that makes audio tracks more closely match the original master recording than other data-compressed soundtracks. Coupled with the multi-dimensional benefit of surround sound technology, the audio quality of DTS-format soundtracks and music mixes dramatically improves content. DTS offers a number of surround sound formats developed specifically for consumer and automotive applications. 5.1 and 6.1 are different channels of discrete digital audio in consumer electronics products and software content.

Dolby Digital system provides 6 channels of crystal clear digital surround sound. Left, Center and Right channels in front provide precise. Clear positioning of dialogue. Separate or "discrete" Left and Right surround channels on the side and in the rear provide atmospherics and ambient sounds. A subwoofer/bass effects channel contributes extra punch to action and special effects sequences.