DVD’s – What Are They?

DVD is one of those things that virtually everyone in this age uses on an everyday basis. Despite this, however, very few people know about what DVDs are besides the fact that they are a better alternative to CDs in terms of data storage.

So what does DVD mean? DVD is an acronym for Digital Versitle Disc. DVDs are among the latest tools available in the industry of optical disc storage. DVDs function basically like CDs but are quicker and have higher capacity. DVDs are able to contain cinema-quality video files, higher audio quality than CDs, pictures, and other data.

DVDs have taken the place of laser discs, and have long ousted video tapes and video game cartridges in the market. It is predicted that DVDs will gradually wipe out audio CDs and CD-ROMs from the technology market. DVDs are able to store computer data, home entertainment, and other information in a single reliable system. Because of this, DVDs are the choice of the biggest corporations in the fields of electronics, computer hardware, and entertainment. It is not surprising, then, that the DVD is already declared the unbeaten consumer electronics product of all time within fewer than three years after its release.

DVD Video Attributes:

  • More than 2 hours of high-quality digital video (double-sided, dual-layer disc can contain around 8 hours of high-quality video, or 30 hours of VHS quality video).
  • Support for widescreen movies on standard or widescreen TVs – 4:3 and 16:9 aspect ratios.
  • A maximum of 8 tracks of digital audio (for multiple languages, commentaries, etc), each with as many as 8 channels.
  • Maximum of 32 subtitle/karaoke tracks.
  • Automatic, seamless branching of video for multiple story lines or ratings on one disc.
  • Maximum of 9 camera angles (various viewpoints may be chosen while playback).
  • On-screen menus and trouble-free interactive features (for games, quizzes, etc).
  • Multi-lingual texts for title name, album name, song name, cast, crew, etc.
  • Automatic rewind and fast forward – unlike rental video tapes, have no “be kind, rewind” stickers.
  • Instant location of title, chapter, music track and time-code.
  • Resilient – does not wear from playing, but from material damage.
  • Heat-resistant and not affected by magnetic fields.
  • Pocket-sized – effortless use, storage, and transport; players may be portable
  • Cheaper reproduction compared to laserdiscs and tapes. Read disc manufacturing.
  • Non-comedogenic.

Reminder: Many discs lack some of the features listed above because the features may be specially authored. A few discs might also prevent users from skipping or searching.