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duplication.replicationDVD & CD services
DVD burning tips, reviews and services from London, UK
What is DVD duplication?
DVD duplication simply involves copying optical media, from one master DVD copy to duplicates of the media on other recordable DVD discs. Similarly DVD replication is identically reproducing a copy of DVD media.
About.DVD Technology
DVDs have become part of everyday life. When we want to watch a movie, listen to some music or view photos on our television we go for a DVD disc. Here is some basic information about the DVD...
What is a DVD?
DVD stands for Digital Versatile Disk which is an optical disc storage media format. A DVD closely resembles a CD (compact disk). However, a DVD can store much more data including movies with high video and sound quality. While a CD commonly has a capacity of 650MB, the smallest capacity DVD can store about seven times more data, or 4.38GB. A DVD encodes data in the form of a spiraling trail of pits and lands separated by mere nanometers. There are various kinds of DVDs. The DVD-ROM is the most common. It is a disk that cannot be written over. Blank DVDs with designations like “DVD-R” and “DVD+R” are formatted, recordable DVDs. The -R and +R refer to competing format standards, but both will record movies, audio or other media/data. The best examples of DVD-ROMs are the music and film DVDs that can be bought off the shelf. DVDs resemble compact discs as their physical dimensions are the same (12cm or occasionally 8cm in diameter) but they are encoded in a different format and at a much higher density. The official DVD specification is maintained by the DVD Forum.
What is DVD authoring?
Authoring is the process of collecting audio, video, menus, subtitles, etc onto a DVD. In common parlance it is called burning. This is done on DVD authoring software. There are numerous DVD authoring programs but which you use depends on your need, be it personal, professional or corporate.
What is duplication?
Duplication is an industrial process where a glass master used to physically stamp copies out like a cookie cutter.
What is DVD video?
A DVD video is technically superior and the closest we have to studio quality video. Digital studio master tapes are usually encoded from to MPEG-2 format to create a DVD video. The encoding process uses lossy compression that removes redundant information.
What is a DVD menu?
A DVD menu allows easy access to the titles without having to scan the DVD. This is both convenient and accurate. A DVD could have a main menu with 4 title sets each containing a menu and a single title. All the titles are made from multiple input files and each input file is one chapter. What is a menu? Menus are just an mpeg file with subtitles. The basic mpeg is the background and the subtitles produce the menu buttons. The background can either be a short movie or a still image converted to an mpeg. MPEG stands for "Motion Picture Experts Group." It stands for the committee that dreamed up the MPEG-2 compression algorithm. MPEG-2 is the de-facto standard compression technology used for DVD video.
