The disc can have one or two sides, and one or two layers of data per side the number of sides and layers determines how much it can hold. DVDs can also have interactive menus and bonus features such as deleted scenes and commentaries. DVDs are often used to store movies at better quality than a VHS.
#DVD STUDIO PRO 4.0.3 MOVIE#
With Divx, a movie (or other data) loaded onto a DVD-ROM is playable only during a specific time frame, typically two days.Ī DVD (which means Digital Versatile Disc or a Digital Video Disc) is an optical disc capable of storing up to 4.7 GB of data, more than six times what a CD can hold. With so many different formats - DVD+R, DVD+RW, DVD-RAM, DVD-R, DVD-RW, DVD-ROM - how do users know which DVD format is compatible with their existing systems, and why are there so many different formats for DVDs? The following information sheds some light on DVD's different flavors, the differences between them and the incompatibility issues that the differing technologies have sprouted.ĭVD: Short for digital versatile disc or digital video disc, a type of optical disk technology similar to the CD-ROM.ĭVD-Video: A video format for displaying full-length digital movies.ĭVD-ROM: A type of read-only compact disc that can hold a minimum of 4.7GB (gigabytes), enough for a full-length movie.īurn: Slang term meaning to write data to a CD-ROM or DVD-ROM.ĭivx: Short for Digital video express, a new DVD-ROM format promoted by several large Hollywood companies. But just as compact disc (CD) technology evolved so that users could record and erase and re-record data onto compact discs, the same is now true of DVDs. When DVD technology first appeared in households, users were simply popping DVD discs into their DVD players to watch movies - an attractive option to the then-conventional VCR. Then, after applying a protective liquid (lacquer) and pressing the layers, they are treated with infrared light.
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This helps the laser to concentrate through the outer layers onto the inner ones. After that a spray of a special reflective layer covers the bumps.Īluminum is applied behind inner layers and semi-reflective gold covers the outer layers. Many bumps form one continuous spiral that can include information. Today's production uses this type of plastic to create different things because it can resist very high and low temperatures. An injection used on a polycarbonate plastic leads to the creation of microscopic bumps. All layers have a thickness of 1.2 millimeters. The information is read by a laser.Ī DVD disk has several layers, which are made of plastic. Both CDs and DVDs have pits and bumps on the data track (the data track represents a path which has certain information). These discs are made of the same materials and have the same methods of production.ĬDs and DVDs use the same way of keeping information.
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However, the amount of information they can store is different. Both CD and DVD discs have equal sizes (diameter, thickness etc.).