如今^(Nowadays)，您会在市场上找到不同类型的DVD^(DVDs)，其中双层^{(Dual Layer)}和双面 DVD^{(Double-Sided DVDs)}是最受欢迎的。双层 DVD^{(Dual-Layer DVDs)}和双面 DVD^{(Double-sided DVDs)}提供了大量的存储容量，而且总共有两个可记录层，但它们仍然是完全不同的。

在本文中，我们将讨论这两种DVD^(DVDs)，以便找出它们之间的显着差异。因此，所有想了解上述DVD^(DVDs)之间主要区别的读者都必须彻底阅读本文。

双层^(Dual-Layer)和双面 DVD^{(Double-Sided DVD)}的区别

双层 DVD

双层 DVD^{(Dual-layer DVDs)}于 2004 年首次推出。它基本上是一张带有两个可记录染料层的光盘，每个可存储近 4.7GB 的数据。因此，这些类型的DVD^(DVDs)的总容量为 8.5GB，因为有两个可记录的染料层，尽管它只有一面。在这种类型的DVD中，您将能够存储近 4 小时的视频。

这些类型的DVD^(DVDs)与大多数设备兼容，但您有时可能会在某些较旧的设备中遇到一些问题。在使用双层 DVD^{(Dual-layer DVDs)}时，您会遇到两种不同的格式，包括DVD-R 双层^{(DVD-R Dual Layer)}和DVD+R Dual-layer格式。

此外，双层定向有两种模式，平行轨道路径（PTP）和相反轨道路径（OTP）。在PTP模式下，两层都在内径 (ID) 处开始记录，在外径 (OD) 处结束。另一方面，在OTP模式下，下层从内径 (ID) 开始，上层从第一层结束的外径 (OD) 开始。

现在我们将进入本文的下一部分，您将了解双面DVD^(DVDs)。

双面 DVD

与双层 DVD^{(Dual Layer DVDs)}不同，双面 DVD^{(Double-sided DVDs)}有两个不同的面，您可以在其中存储大量数据。双面 DVD^{(Double-sided DVDs)}可以进一步分为三种类型，包括DVD-10、DVD-18和DVD-14。

当DS DVD^{(DS DVDs)}的两面都是单层时，这种类型的DVD^(DVDs)被称为DVD-10，而另一方面，当两者都是双层时，这种类型的双面 DVD^{(Double Sided DVDs)}被称为DVD-18。通常，您将能够存储 9.7GB 的数据，也就是将近 4.75 小时的视频。

用于电影发行的双面 DVD^{(Double-Sided DVDs)}的一侧为电影的宽屏或信箱版本，另一侧为平移和扫描或全屏版本。此外，您会在每一方找到一组不同的奖励内容。

双层 DVD 和双面 DVD 都可以进一步分为两种类型，即可刻录和可重写 DVD。^{(Both Dual Layer DVDs and Double-Sided DVDs can be further divided into two more types which are known as Recordable and Rewritable DVDs.)}

Difference between Dual-Layer and Double-Sided DVD

Nоwadays you will find diffеrent typeѕ of DVDs іn the market oυt of which Dual Layer and Double-Sided DVDs are the most popular ones. Dual-Layer DVDs and Double-sided DVDs offer a massive amount of storage capacity, and moreover, have a total of two recordable layers, but still, both are absolutely different from each other.

In this article, we will discuss both the DVDs in order to bring out the significant differences between them. Therefore, all the readers who are excited to know about the key differences between the DVDs mentioned above must go through this article thoroughly.

Difference between Dual-Layer & Double-Sided DVD

Dual-Layer DVD

Dual-layer DVDs were first introduced in the year 2004. It is basically a disc with two recordable dye layers each capable of storing nearly 4.7GB of data. So, the total capacity of these types of DVDs is 8.5GB as there are two recordable dye layers, although it has only one side. In this type of DVD, you will be able to store nearly 4 hours of video.

These types of DVDs are compatible with most of the devices, although you may sometimes face a few issues in some of the older devices. While using Dual-layer DVDs, you will come across two different formats, including DVD-R Dual Layer, and DVD+R Dual-layer format.

Moreover, there are two modes for dual-layer orientation, parallel track path (PTP), and opposite track path (OTP). In PTP mode, both layers start recording at the inside diameter (ID) and end at the outside diameter (OD). On the other hand, in OTP mode, the lower layer starts at the inside diameter (ID) and the upper layer starts at the outside diameter (OD) where the first layer ends.

Now we will go to the next segment of this article, where you will come to know about the Double-Sided DVDs.

Double-Sided DVDs

Unlike the Dual Layer DVDs, Double-sided DVDs have two different sides where you will be able to store a massive amount of data. Double-sided DVDs can be further divided into three types, including DVD-10, DVD-18, and DVD-14.

When both sides of the DS DVDs are single-layered then such types of DVDs are known as DVD-10, while on the other hand when both are double-layered, then such kinds of Double Sided DVDs are known as DVD-18. Usually, you will be able to store 9.7GB of data, which is nearly 4.75 hours of video.

Double-Sided DVDs which are used for movie release have the widescreen or the letterbox version of the movie on one side, and the pan and scan or the full-screen version on the opposite side.  Moreover, you will find a different set of bonus content on each side.

Both Dual Layer DVDs and Double-Sided DVDs can be further divided into two more types which are known as Recordable and Rewritable DVDs.

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