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This topic comprises 8 pages: 1 2 3 4 5 6 7 8
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Topic: Let the HD DVD format wars begin...
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Bruce Hansen
Jedi Master Film Handler
Posts: 847
From: Stone Mountain, GA, USA
Registered: Dec 1999
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posted 07-13-2005 01:09 PM
Here is some interesting info from tvtechnology on the web:
tvtechnology.com
Toshiba HD DVD Format Details Emerge
As Toshiba's coming HD DVD disk format gets closer to clashing head-on with Sony's incompatible Blu-ray disk, more details are emerging about each of their differences, which are considerable. In various published reports on HD-DVD's specs prior to its expected November rollout in the United States, there already seems to be growing evidence that Hollywood will go the cautious route on both formats, to no one's surprise. For example, less than a hundred titles (mostly motion pictures) reportedly will greet new HD DVD consumers when the new HD players are introduced for the holiday selling season.
Consumers at various demos can readily tell the difference between standard DVD video and the HD kind. (This would be a good thing.) Whether large numbers, however, are ready to chuck their current players for higher-priced HD units--assuming they already have HD sets, to begin with--is a question that will begin to be answered late this year. Although the HD DVD player is backwards-compatible and will accept standard disks (so no one had to toss out their current DVD collection), only HD DVD disks will provide HD quality.
Notably, Toshiba apparently has reported its HD-DVD player will only output HD on its HDMI (high definition multimedia interface) connection. The player also will have a USB interface to allow connecting to computers for additional content and interactive options. HD DVD's content will be based on 1080p, and the HD-DVD disk will come in 3 storage sizes: 15GB, 30GB, and 45GB (single, dual or triple layer).
And there will be a fourth variety which contains a standard SD-DVD version of the featured content on the reverse side of the disk, allowing retailers to sell the same type of disks to all consumers--and encouraging consumers (perhaps unknowingly) to begin building an HD DVD library even before they have all the necessary new equipment.
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Paul Mayer
Oh get out of it Melvin, before it pulls you under!
Posts: 3836
From: Albuquerque, NM
Registered: Feb 2000
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posted 07-28-2005 10:33 PM
Saw this link to cdfreaks come up for discussion over on AoD:
quote:
HD DVD requires Digital Imprimatur to authorise playback
Posted by Seán Byrne on 25 July 2005 - 00:00 - Source: P2PNET.net
A while back there was a mention that the next generation DVD format, HD DVD will use the sophisticated content protection system AACS. According to the AACS Pre-recorded Video Book Specification, in order for media and players to be AACS compliant, a disc can only be published if it contains a digital imprimatur and players for the media must reject any work that lacks a digital imprimatur. An imprimatur is the latin for "let it be printed", which means that a work cannot be published without first being approved by some central authority.
Every disc that is published must contain an up-to-date list of revoked works and when ever a disc is loaded, the player must update its revocation list and prevent the playback of any disc that contains a revoked digital imprimatur.
If the HD DVD format becomes the main format for movies, the AACS organisation will likely decide on who handles the digital imprimaturs. The AACS organisation is founded by several members from both the HD DVD and Blu-ray sides such as Sony, Toshiba, Microsoft, Disney, Intel and so on. Unfortunately, as there will likely only be one single central organisation reponsible for issuing digital imprimaturs, they may be subject to anticompetitive abuses as this organisation would be reponsible for the authorising of every single HD DVD disc for publishing.
From the AACS Pre-recorded Video Book Specification
quote:
The technical details are in the AACS Pre-recorded Video Book Specification. The digital imprimatur is called a “content certificate” (see p. 5 for overview), and is created “at a secure facility operated by [the AACS organization]” (p. 8 ). It is forbidden to publish any work without an imprimatur, and player devices are forbidden to play any work that lacks an imprimatur.
From what I can see, if a HD DVD player is forced to reject HD DVD media that lacks a digital imprimatur, this means that blank media must also contain a digital imprimatur in order for a HD DVD player to allow playback. This likely means that should someone succeed in copying HD DVD movies and illegally resells them, then it is possible revoke all (or at least the majority) of media that the pirate has used. If this is true, this is likely one method the movie industry will use to tackle piracy in the future.
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Stephen Furley
Film God
Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002
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posted 07-30-2005 03:45 AM
quote: Paul Mayer
Their players will only put out true HD via HDMI (with Intel's built-in DRM), and not DVI, which the pirates have shown to be too easy to break.
Paul, it's not a question of DVI Vs. HDMI, the two interhaces are compatible as far as the video signals are concerned; HDMI also carries audio, which DVI does not. You could connect a DVD player with a HDMI output to a monitor or projector with a DVI input with nothng more than a cable with the appropriate connectors on each end, which are readily available; no signal conversion is necessary.
What matters is the HDCP content protection which will be required on HD digital connections. HDCP is mandatory on HDMI, and optional on DVI, so if you connect a HDMI player to a DVI display device it may or may not work, depending on whether or not the DVI interface implements HDCP. If you connect it to a HDCP interface then it should always work.
There are several articles about this here Sounds like a great opportunity for confusion. Also, anybody who has already bought an older HD display device, which does not implement HDCP will not be able to use it in HD mode, unless HDCP can be implemented in it by means of a firmware ugrade, or plug-in module of some sort. It will not be possible to add a 'black box' converter between the two devices to enable playback.
This seems to prevent people from doing something quite legitimate, i.e. watching a DVD at home, which they have bought, and are therefore licenced to view. This is not piracy prevention; it's viewing prevention, unless they go out and buy new HDCP complient equipment of course.
Note that the 'C' in HDCP stands for 'content', not 'copy'; I think the chioce of words here was significant.
quote: Paul Mayer
We'll see how the Blu-Ray camp responds to this one.
They will do exactly the same. If they didn't then the rights owners would not allow their material to be published in this format, and with no mainstream material available for it the format would effectivly cease to exist.
ps. It's not just a Toshiba thing, this will apply to all makes of equipment.
pps. HD optput will only be allowed on digital connections, so you won't be able to get around it by using Y,Pr,Pb or RGB analogue component connections either, this will only give you standard definition.
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Paul Mayer
Oh get out of it Melvin, before it pulls you under!
Posts: 3836
From: Albuquerque, NM
Registered: Feb 2000
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posted 08-09-2005 10:23 PM
Blu-ray goes with AACS DRM too... and goes HD-DVD one better with BD+ and ROM Mark
Blu-ray Disc Association Adopts AACS, BD+ Renewability, and ROM Mark Technology
quote:
HOLLYWOOD, Calif.--(BUSINESS WIRE)--Aug. 9, 2005--In a move to protect against illegal copying and large scale piracy while leaving consumers the flexibility to manage and enjoy copies of their legally purchased content, the Blu-ray Disc Association (BDA) has adopted the most comprehensive content management system ever employed on an optical disc format.
The Blu-ray content management system includes three primary components: Advanced Access Content System (AACS), "BD+", a Blu-ray-specific enhancement for content protection renewability, and ROM Mark, a measure unique to Blu-ray Disc to guard against mass production piracy or the mass duplication and sale of unauthorized copies of pre-recorded media.
"Content protection is a critical issue for next-generation media distribution," said IDC's Joshua Martin, Associate Research Analyst, Consumer Markets. "Finalizing the content protection scheme is critical for the launch of blue laser optical disc technology, and new protection schemes should allow for increased consumer flexibility while better protecting prerecorded content compared to current DVD technology."
The foundation of the Blu-ray content management system, AACS(1), is a state of the art content management system that is many times more powerful than that used in DVD. Additionally, AACS enables new consumer usage models around network functionality and internet connectivity including managing copies, in an authorized and secure manner.
In addition to AACS, the BDA took a dramatic step in the battle against mass production piracy with the adoption of ROM Mark. ROM Mark, which is unique to Blu-ray Disc, is a new technology designed specifically to thwart large scale, mass production piracy, a problem that experts estimate costs the movie industry alone in excess of $3 billion per year in lost revenue. To combat this, the ROM Mark technology embeds a unique and undetectable identifier in pre-recorded BD-ROM media such as movies, music and games. While invisible to consumers, this ROM Mark can only be mastered with equipment available to licensed BD-ROM manufacturers, essentially preventing unauthorized copies of a disc.
The BDA also adopted "BD+", a Blu-ray Disc specific programmable renewability enhancement that gives content providers an additional means to respond to organized attacks on the security system by allowing dynamic updates of compromised code. With these enhancements, content providers have a number of methods to choose from to combat hacks on Blu-ray players. Moreover, BD+ affects only players that have been attacked, as opposed to those that are vulnerable but haven't been attacked and therefore continue to operate properly.
"The level of unauthorized copying and industrial piracy associated with DVD not only jeopardizes studios and other content creators, but also results in increased costs and limited flexibility for consumers," said Maureen Weber, General Manager, of Hewlett Packard's Optical Storage Solutions. "It is good news for everyone that the BDA has adopted a series of measures that gets it right for the next disc format."
About Blu-ray Disc
Blu-ray Disc is the next-generation optical disc format being developed for high-definition video and high-capacity software applications. A single-layer Blu-ray Disc will hold up to 25 gigabytes of data and a double-layer Blu-ray Disc will hold up to 50 gigabytes of data.
About the Blu-ray Disc Association
The Blu-ray Disc Association (BDA) is responsible for promoting and further developing business opportunities for Blu-ray Disc -- the next-generation optical disc for storing high-definition movies, games, photos and other digital content. The BDA has 140 members. Its Board of Directors consists of Apple; Dell Inc.; Hewlett Packard Company; Hitachi, Ltd.; LG Electronics Inc.; Mitsubishi Electric Corporation; Panasonic (Matsushita Electric); Pioneer Corporation; Royal Philips Electronics; Samsung Electronics Co., Ltd.; Sharp Corporation; Sony Corporation; TDK Corporation; Thomson; Twentieth Century Fox; and Walt Disney Pictures and Television.
(1) The Blu-ray Disc Association's adoption of AACS is subject to the BDA's approval of the final AACS specifications and license terms and conditions.
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Why is the industry so paranoid about HD content? I have never been able to get an answer that makes any sort of sense.
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