This is the process of creating a DVD video capable of playing on a player. Authoring software must conform to the specifications set by the Forum group in 1995. The complexity of these specifications results from the number of companies that were involved in creating them.Strictly speaking, DVD authoring differs from the process of MPEG encoding, but as of 2009 most authoring software has a built-in encoder (though separate encoders are still used when better quality or finer control over compression settings is required).Most DVD-authoring applications focus exclusively on video DVDs and do not support the authoring of DVD-Audio discs.Stand-alone DVD recorder units generally have basic authoring functions, though the creator of the disc has little or no control over the layout of the menus, which generally differ between models and brands.To develop a DVD application (software or hardware), one must first licence the particular book of specifications from DVD Format/Logo Licensing Corporation, a Japanese corporation. The different formats have different books; each book contains hundreds of pages. After obtaining this licence, the developer must become a licensee — which requires an additional fee. Without becoming a licensee, the book can be used only for reference, not for actual creation of DVD applications.The DVD specifications were written in Japanese and then translated to English for use in America. This process has resulted in text that can be difficult to interpret, and to this day, many companies interpret various parts of the specifications in different ways. This is the reason DVD players from different manufacturers do not always conform to the same rules – each developer understands the specifications in a slightly different way.Once you have completed this process you can use the disc for dvd duplication/ dvd replication. Most players will play duplication discs. 99% of players will play replication discs.