Thread: Movie DVD vs Blanks

What format are movie DVDs made in?
Movie DVDs tend to be like 9GB whereas blanks tend to be like 4.7GB.
Is there a site that explains why this is?

Movies generally come on dual layered DVDs (DVD9). Dual layered DVDs are for sale, but are usually much more expensive than two single layered DVDs (DVD5). It is the number of pixels on the DVD9s that make it so big. If you use a program like DVDFab, you can shrink a DVD onto a standard DVD5, Extras included, without being able to notice a difference in quality on a standard sized TV.

I wonder why they do that. DVD movies have been in that format since late 90s. But only dvd4 blanks were made available a few years later. Then when dvd9 blanks came out, they were far more expensive. They still are about 10 times the price.

Ever heard of DVD Shrink ?