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DVD Disc Types

The classification of DVD discs can be diversified from different point of views. DVD disc types can be divided into the following categories according to the structure: D5, D9, and the less encountered D10, and D18. And from the angle of writable DVD types, DVD discs can be also divided into DVD Video, DVD Audio, DVD-ROM (for the computer), DVD-R (recordable DVD discs for once), DVD-RAM (repeatedly recordable DVD discs). Here we just show you the details of the DVD disc types according to classification from structure.

DVD Disc Types - Classification of DVD Discs from Structure

According to the physical properties of each kind of DVD discs, D5 (DVD-5 in short) is usually referred as the SS-SL or Single Side Single Layer discs. The D10 (DVD-10) stands for Double Side Single Layer (DS-SL) discs, D9 (DVD-9) represents the Single Side Double Layer (SS-DL), and D18 is the DS-DL discs. Since each layer of a DVD disc can hold a certain volume of data that the D5 SS-SL has the minimum storage space, while the DS-DL D18 owns the largest space.

Larger space can accommodate more data, so D9 can hold more than twice data than D5. This the reason why the D9 disc usually have better quality and Highlights Pictures reasons. We know that DVD has many advantages compared to the early media like VCD and video tapes. The first strengthen of DVD is of course the picture and sound quality. It is impossible to make the effect close to that in the theater without super-clear picture quality and sound. However, the more clear picture quality (which means higher bit rate), more channels (such as common DD5.1 ​​(Dolby 5.1) and DTS (digital home Theater system) ), the greater capacity it will take.

The second advantage of DVD is that it can contain a large number of Special Features, including shooting footage, cast and crew interviews, and possibly even a documentary of the film, etc. These elements can be short about ten minutes, and also can be long up to several minutes or even more than an hour. These behind the scenes content are very important for our understanding of a film from all angles is very important. All of these contents are also require a larger capacity.

Currently the vast majority of DVD discs are D5 SS-SL and D9 SS-DL disc. There are two ways to make a distinction between this two kinds of DVD discs. First solution based on the surface color. The surface color of SS-SL is silver-white, SS-DL discs for the gold. Besides, if there are two serial numbers printed on the disc, it also represents a SS-DL disc. Since DS-SL and DS-DL discs are cost high in producing that they only be applied to some special occasions.

DVD Disc Types Specifications

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Keys: DVD Disc Types, Classification of DVD Discs, Writable DVD Types, Recordable DVD Discs, DVD Rewritable Discs, DVD Disc Storage