Dvd Format

DVD, also known as "Digital Versatile Disc" or "Digital Video Disc," is the same size as a CD but capable of storing significantly more data (18 gigabytes compared to 680 megabytes on a CD). DVD's features include: Dolby Digital, PCM, MPEG or DTS soundtracks, multiple aspect ratios (fullscreen and/or letterbox depending on the DVD), up to 8 language tracks, up to 32 subtitle languages, alternate camera angles, and parental lockout functions. Many discs also contain extra features such as production material and director's commentary. DVD is capable of approximately 500 lines of horizontal resolution, compared to VHS's 240, Super VHS's 400 and LaserDisc's 425.