1.
DVD is the three-letter abbreviation of "Digital Video Disc" or sometimes also known as "Digital Versatile Disc".

2.
Over two continuous hours of high-quality digital video and audio on a typical 8.5-Gbyte double-sided, dual-layer single disc.

3.
The DVD specification is fairly complex and the functions required by its virtual command set are somewhat vague.

4.
Hollywood studios want to control the home release of movies in different countries because of differences in worldwide release schedules.

5.
Regional code enhancement (or RCE) is a mechanism to check for the default region setting of the DVD player and disallow playback if the default region is not the right one.

6.
There are many forms of content protection that DVD technology employs. The two most popular and well known methods of video copy protection are Macrovision and CSS.

7.
Hollywwod movie studios required the DVD specifications to support a comprehensive copy protection scheme because of the possibility of making an exact digital copy of the original movies released on DVD. This copy protection method is known as the Content Scrambling System, or CSS.

8.
DVD video recorders were introduced in Japan in late 1999, and in the United States almost a year later. A DVD video recorder works very much like a typical consumer videocassette recorder VCR.

9.
A dual-layer DVD has two layers for storage of data. One of the layers is semi-transparent so that the laser can focus through it and read the second layer so that data on both layers can be read from the same side of the disc.

10.
The DVD specification supports the MPEG video information on a DVD disc in one of the two formats required for incompatible television systems.

11.
Dolby Digital soundtracks are very popular with many commercial DVD-Video releases.

12.
Each DVD disc contains many segments of video and audio contents organized as chapters in titles.

13.
Closed Captions, also known as CC, are a standardized encoding method to incorporate textual information into an NTSC television signal.

14.
DVD media are available in two physical sizes: standard 12 cm (4.7 inches) and mini 8 cm (3.1 inches), both 1.2 mm thick, made of two 0.6mm substrates glued together.

15.
Computer animation consists of images with sudden changes in contrast and brightness not normally seen in the real world.