Whats a dual layer DVD disc?
A DVD can hold digital information on both sides of the disc and in two sandwiched layers on each side. A dual-layered disc can, for example, offer a movie in both widescreen and full-screen (or pan-and-scan) formats, and your DVD player can switch from one layer to another with a barely perceptible interruption in playback. Dual-layered DVDs are also useful for holding longer films (such as Titanic and Saving Private Ryan) or video games that exceed the capacity of a single layer. Most DVDs will be properly labeled to indicate if they are dual-layered. (You can also identify a dual-layered DVD by its golden-colored data side, as opposed to the shiny silver of a single-layered disc.) There are two types of dual-layered DVDs–PTP and OTP (also known as RSDL). The PTP (or “parallel track path”) configuration allows a DVD player’s laser to switch easily from layer to layer to access features like multiple menus, pop-up information, and other special effects. The OTP (for “opposite track p
