Best DVD Copy Software - Reviews
Bookmark this site | Sitemap
best dvd copy software
Best DVD Copy Software of The Month []
Read DVD-Cloner Review
>>Best DVD copy software reviews>> articles


Why do some DVD discs require side flipping?



The basic types of DVD are referred to by a rough approximation of their capacity in gigabytes. In draft versions of the specification, DVD-5 indeed held five gigabytes, but some parameters had to be changed later on to address technical challenges, so the capacity decreased.


The 12 cm type is a standard DVD, and the 8 cm variety is known as a mini-DVD. The capacity by surface (MiB/cm²) varies from 6.92MiB/cm² in the DVD-1 to 18.0 MiB/cm² in the DVD-18.


Although DVD dual-layer technology allows more than four hours of 3.3 for broadcast from single side, some films are split over two sides of a disc, requiring that the disc be flipped partway through. Most "flipper" discs exist because of producers who are too lazy to optimize the compression or make a dual-layer disc.


Better picture quality is a cheap excuse for increasing the data rate; in many cases the video will look better if carefully encoded at a lower bit rate. Quite few players can switch sides automatically, but it's not required because most movies are less than four hours and can easily adapt to a dual-layer (RSDL).


Note: A flipper is not the same as a disc with a widescreen version on one side and a pan & scan version or supplements on the other.


Tags: DVD


Blu-ray copy


Top ranked DVD copy software
DVD Copy Software Articles

Copyright © 2006-2017 Best DVD Copy Software Reviews. All Rights Reserved.