Blu-ray Compared To HD-DVD - The Details For The Warring Formats

By Tim Caroll


The current aim of blu-ray as well as HD-DVD is to get as significantly public support quickly as ultimately it is a customer that will decide which format comes out on top. Using the unification talks failing it can be up to you to produce the decision of which format to consider. To aid an individual with this tough choice may be the lowdown on how every format matches below.

History

The blu-ray format's head firms are Sony and Philips with Toshiba as well as Hitachi heading up the HD-DVD format. This scenario isn't the very first time where these two sides have gone at each other with opposing formats. The DVD format was born from the co-operation in the Multimedia Compact Disc from Sony/Philips (MMCD) and also the Super Density Disc (SD) from Toshiba. Nevertheless this ended properly to the consumer using the DVD format being widely adopted as well as being the modern standard, it had been Toshiba's camp who arrived on top when it comes to royalties.

This led to the work on modern formats by either sides with Sony planning to take back a number of its lost market. The two projects though had been in production though not really heading anywhere at the moment. Sony's Professional Disc for Data (PDD) became the blu-ray format while Toshiba's Advanced Optical Disc starting to be HD-DVD. This leads us back to the original situation wherever you will find two competing formats with a unification looking a lot less likely.

Technical

Equally blu-ray as well as HD-DVD use a wavelength of 405nm nevertheless the smaller track pitch on blu-ray (see Blu-ray Disc) enables much more facts to become squeezed on and also provides the bigger capacity. However it will be the varying track pitch that makes these formats incompatible. The surface layer of the 2 is different also as HD-DVD utilizes a .6mm layer just like DVD whilst blu-ray uses a .1mm clear plastic layer.

This kind of difference will be the principal reason why prices are higher with blu-ray. High priced production methods are needed to be able to make the discs and a hard coating must be applied to generate the discs suitably resilient to dust as well as fingerprints.

Capacity

Blu-ray right now provides discs in 25gb for single layer and 50gb for dual layer. On the other hand TDK has began work on a 200gb disc that is 6x33gb layers.

HD-DVD is available in 15gb for the single layer as well as 30gb to the dual layer. Best tests so far have attained 45gb although 60gb could be the theoretical limit. This illustrates that the maximum for HD-DVD is merely 10gb a lot more than what blu-ray can already offer.

Codecs

Each formats use similar codecs to play video as they are both equally able to play standard and high-definition. Which means MPEG-2, Microsoft Video Codec 1 (aka VC1, WMV HD, etc.) as well as H.264 / MPEG-4 AVC are all supported on together formats.

Security

Each blu-ray and also HD-DVD have to generate use of HDCP encrypted output and also the Advanced Access Content Program (AACS). Each HDCP as well as AACS are mandatory for any discs with HD video.

Blu-ray additionally features ROM-Mark watermarking technologies and also BD dynamic crypto which generates unique keys for batches of discs.

HD-DVD uses the same technique in the Volume Identifying technology.

Support

Each formats are heavily supported in each the Consumer Electronics (CE) and Facts Technologies (IT) industries. On the other hand blu-ray has a better portion in the big name movie as well as game studios supporting it that is essential for there to become a ready amount of content at launch. See below for the list of Supporting studios: Blu-ray: 20th Century Fox, Buena Vista Residence Entertainment, Electronic Arts, MGM Studios, Paramount Pictures, Sony Pictures Entertainment, The Walt Disney Firm, Vivendi Universal Games, Warner Bros.

HD-DVD: Buena Vista House Entertainment, New Line Cinema, Paramount Pictures,The Walt Disney Firm, Universal Studios, Warner Bros.




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