Blu-Ray and HD-DVD are two new optical storage technologies that fight as the successor of DVD. In this article you will learn everything you need to know about these technologies, including the motivations that lead to the creation of both. Is it really true that DVD has its days counted?
With the introduction of high-definition TV (HDTV) DVD storage capacity showed to be insufficient to this application. DVD supports a resolution up to 720x480 pixels, while HDTV works with resolutions as high as 1920x1080 pixels. Just to give you an idea, two hours of high-definition video with data compression requires 22 GB of storage space. Keep in mind that the maximum capacity of a DVD is of 17 GB, if a DVD-18 disc is used (keep in mind that this is a dual-sided dual-layer disc).
Source : *www.hardwaresecrets.com/article/415/1
With the introduction of high-definition TV (HDTV) DVD storage capacity showed to be insufficient to this application. DVD supports a resolution up to 720x480 pixels, while HDTV works with resolutions as high as 1920x1080 pixels. Just to give you an idea, two hours of high-definition video with data compression requires 22 GB of storage space. Keep in mind that the maximum capacity of a DVD is of 17 GB, if a DVD-18 disc is used (keep in mind that this is a dual-sided dual-layer disc).
Source : *www.hardwaresecrets.com/article/415/1
