Computer and Technology

The current goal of Blu-ray and HD-DVD is to get as quickly as public support, ultimately the consumer who decides how it will reach the top. With the unification of the talks are not for you to decide how to adopt. To help in this difficult decision is the truth about how each format matches below.
History

Corporate head Blu-ray are Sony and Philips, Toshiba and Hitachi at the forefront of HD DVD. This is not the first time these two teams to each other in opposite forms. DVD format was co-Multimedia Compact Disc from Sony / Philips (MMCD) and the Super Density Disc (SD) from Toshiba. Although it ended well with the DVD format is widely accepted, and consumers will be the new standard, it was Toshiba's camp, which loads on top of the report.

This led to work on new formats by both sides with Sony to regain some of its lost market. Both projects were in production, but not really going anywhere for now. Sony Professional Disc for Data (PDD) became the Blu-ray while Toshiba Advanced Optical Disc becoming HD-DVD. This goes back to the original situation in which there are two competing formats that unification is much less likely.

Technical

Both Blu-ray Disc and HD DVD uses a wavelength of 405 nm, but not the slightest trace of a Blu-ray (see Blu-ray Disc) contains additional information printed on the top and gives the maximum capacity. But this is not another song that makes these two formats incompatible. The surface layer is different in the two HD-DVD uses a 0.6 mm layer similar to a DVD, while Blu-ray uses a 0.1 mm layer of transparent plastic.

This difference is the main reason why costs are higher with the Blu-ray. Costly production methods are needed to make the disks of a hard layer and should be used to make relevant records resistant to dust and fingerprints.

Capacity

Blu-ray currently offers a single layer 25 GB and 50 GB dual layer. However, TDK has started work on a 200 GB, which is capable 6x33gb.

HD-DVD comes in 15 GB single layer and 30GB dual layer. Best tests so far have reached 45GB 60 GB, but the theoretical limit. This shows that the maximum for HD-DVD is only 10 GB more than the Blu-ray can already offer.

Codec

Both formats use the same codecs to play videos, they will be able to play both standard and high definition. This means that the MPEG-2 Microsoft Video Codec 1 (aka VC1, WMV HD, etc.) and H.264 / MPEG-4 AVC are all supported by both formats.

Security

Both Blu-ray and HD DVD have to make use of HDCP encrypted output and the Advanced Access Content System (AACS). Both HDCP and AACS are mandatory for any discs with HD video.

Blu-ray ROM also offers the tattoo mark and BD dynamic encryption key generated by the special batch of discs.

HD DVD uses a similar system to identify the amount of technology.

Support

Both formats are heavily supported by both technologies, consumer electronics (CE) and information (IT) field. However, the Blu-ray is the better part of a big movie studios and the name of the game, claiming that it is important that there is a lot of content ready. Below is a list of supported studies

Blu-ray :
20th Century Fox
Buena Vista Home Entertainment
Electronic Arts
MGM Studios
Paramount Pictures
Sony Pictures Entertainment
Walt Disney Company
Vivendi Universal Games
Warner Bros.

HD-DVD :
Buena Vista Home Entertainment
New Line Cinema
Paramount Pictures
Walt Disney Company
Universal Studios
Warner Bros.