Kleegamefan
K. LEE GAIDEN
Just renewed my sub to WSR so that means that I can update you guys with kewl subscriber only stuffs again
Hear is a (long) article I found in this months ish.....I bolded the stuff I found intresting:
Note, a lot of the info in this article is a few months old.....we just learned that BRD will be using both MPEG4 FREext/AVC H.264 High Profile *and* WMV9/VC9/VC1, codecs, for example...
At any rate, here you go...
Oh, for the people wondering what the diff between AVC H.264 Main profile (HD DVD) and AVC H.264 FREext High Profile (BRD):
AVC H.264 FREext High Profile(BRD)= AVC H.264 Main profile (HD DVD)
+
8x8 transform
+
quantization matrix
+
4:2:0/4:2:2/4:4:4 color sampling formats
+
10bit/12bit sampling
VC-9 have a quantization matrix and 8x8 transform as well, FYI
Hear is a (long) article I found in this months ish.....I bolded the stuff I found intresting:
Note, a lot of the info in this article is a few months old.....we just learned that BRD will be using both MPEG4 FREext/AVC H.264 High Profile *and* WMV9/VC9/VC1, codecs, for example...
At any rate, here you go...
HD Optical Disc Rivals
Battle Of The Formats.
By Gary Reber
Back-To-Back Events
A number of events that have transpired over the past three-month period indicate that the rival high-definition optical disc camps have stepped up efforts to attract Hollywood studios and other industry segments to their respective sides, as the race to bring the fledgling technologies to market heats up.
Digital Hollywood
At the three-day Digital Hollywood Conference and Showcase held in Los Angeles on March 28 Benjamin Feingold, President of Columbia TriStar Home Entertainment, reinforced Fidlers earlier remarks saying, The game people will need bigger bandwidth to create more elaborate games, and the computer industry will soon need higher capacity data storage along with an integrated single high-definition video record and playback platform. Other speakers at the conference sounded DVDs death knell. By 2006 DVD will start to decline, said Fidler. With the availability of the $29 DVD player the commoditization of the format is here and as a result there is a lower perceived value among consumers. Fidler added that piracy, particularly online, continues to grow, requiring new content protection solutions. Fidler once again punctuated the point about capacity saying that the shift to HDTV in the home will create demand for the superior storage capacity of Blu-ray Discs with uncompressed discrete multichannel digital audio, enhanced interactivity, and more value added content. As the ultimate data storage device for home HD content delivery, the Blu-ray Disc format is DVDs logical successor.
At the same session, Feingold said that piracy is running rabidly and threatens the revenue stream. He added: While DVD sell-through is driving the studio economy, DVD will reach maturity in 2005 or 2006, not so much from unit sales, which will increase, but from lower pricing. With less revenues, theres less money to make movies and to pay talent. Feingold acknowledged that people are desperately seeking movies in high-definition but that they were limited to pay satellite services (and to the D-VHS® D-Theater prerecorded high-definition tape format). So we need to bring movies to consumers, he said with high-definition Blu-ray as the revenue engine for Hollywood and the creative community.
Feingold equated the launch of the Blu-ray Disc format to the launch of DVD (Digital Versatile Disc), which didnt get universal support in the beginning. In no time, DVD exploded as the fastest selling consumer electronics format in the history of the industry. While acknowledging that not everybody was yet on-board with Blu-ray he said, If youre going to launch a format you need a lot of people to agree, but you dont need everybody. You need some people with the foresight to build that field of dreams and people will come.
Blade 2 and Hellboy director Guillermo del Toro, guided the audience through a detailed comparative evaluation of the picture quality of Blu-ray versus DVD in a split-screen presentation of clips from David Leans masterpiece, Lawrence Of Arabia. Sonys new Qualia 004 front projector, which uses SXRD Liquid Crystal on Silicon (LCoS) imaging panels with 1920 x 1080 pixel resolution, was used to display the clips (see WSR Issue 86, July 2004 for our review of this projector). This demonstration, which is now used in all Blu-ray Disc format presentations (with the trailer from Hellboy shown), is a convincing exercise in showing the vivid picture superiority of high-definition compared to standard DVD picture resolution fidelity and color saturation. The nuance is incredible. Thats the way the movie is going to live from now on, offered del Toro.
As part of del Toros remarks, he expressed his creative perspective with respect to Blu-ray Disc capacity saying, We are seeing a very near future in which the possibility of mixing documents from the Internet, gaming, and movies will merge into one. He also said that he was thrilled that the added capacity would allow digital archiving a movie without compressing background; without losing the quality of the movie you created. He quipped that Blu-ray is perfect! Its almost as beautiful as having your own Smithsonian in your home.
Demos For Hollywood Studios
At a series of closed-door demos of movie clips from Universal and Warner Bros. for studio executives held in a screening room at Universal Studios in mid-May, Toshiba and NEC officials confirmed their readiness for a launch in July of 2005 for the DVD Forum-backed HD DVD format. This could give the format a six-month head start over the Blu-ray Disc format, which has been targeted for introduction in late 2005 or early 2006. But, of course, as with all positioning statements to create a sense of being the furthest progressed, there is a catch.
As a bit of background (covered extensively in past WSR issues) the HD DVD camps specifications for ROM (prerecorded) and RAM (rewriteable) have been endorsed by the DVD Forum Steering CommitteeROM in November 2003 and RAM in February 2004. While a significant achievement, the manner in which the victory was achieved was contentious. The format was not approved until the voting rules were changed to not count the several companies who abstained (all of which included member companies of the Blu-ray Disc Founders Group on the Steering Committee). The Blu-ray Disc Founders Group, who apparently want to control their technology standards themselves, did not submit their proposed formats specifications for Steering Committee consideration.
The June 17 Blu-ray Disc Content Summit Meeting
Notwithstanding the dependence on studio support, just because the DVD Forum, whose job is to assure that format compliance, has standardized on the HD DVD format doesnt mean that the industry must actually produce HD DVD players. This became perfectly clear at the Content Summit Meeting 2004 event that I attended on June 17 at the St. Regis Hotel in Los Angeles. The event was sponsored by the thirteen-member Blu-ray Disc Founders Group. At that event officials representing the Blu-ray Disc format from each founders company were present to discuss their commitment to Blu-ray and show demonstrations of authoring systems and the operating systems they would introduce in their players. Each and every company official that I met with said that they do not support the HD DVD format and therefore would not introduce players regardless of DVD Forum standardization. They said that their companies have put enormous amounts of resources into developing and introducing Blu-ray Disc and have no interest whatsoever in supporting the format that they believe has inferior technology.
That may not be good news to the other companies who support the HD DVD format, whoever they are within the rest of the 200 or so companies that compose the DVD Forum. Other than Toshiba and NEC (one a consumer electronics hardware manufacturer and the other a PC computer manufacturer), no other consumer electronics hardware manufacturer has stepped forward to show support for the DVD Forum-sanctioned format. But perhaps this is because the DVD Forum rules require members to sign a Non-Disclosure Agreement to maintain ongoing specification finalization for HD DVD on a confidential basis.
On the other hand, the Blu-ray Disc Founders Group represents 10 major consumer electronics companies (Hitachi, LGE, Matsushita, Mitsubishi, Pioneer, Philips, Samsung, Sharp, Sony, and Thomson) two PC companies (Hewlett-Packard and Dell), and two other support companies (Technicolor and TDK Electronics). With such clout behind the Blu-ray Disc format and no support (at least not revealed officially) for the HD DVD format among this group of companies, the question is how can the HD DVD format muster the necessary support to be successful in the market with only two major hardware companies visibly carrying the banner even though it is being positioned as the industry-accepted standard? Where are all the other companies who are members of the DVD Forum that are willing to show their support publicly for HD DVD?
While Microsofts Windows Media Video HD compression/decompression codec has been approved as a mandatory codec, along with MPEG-2 and MPEG-4 Advanced Video Codec AVC (H.264), in the HD DVD standard, Microsoft has not publicly promoted support for HD DVD, other than to acknowledge that the WMV HD codec will be a mandatory codec feature of all licensed HD DVD players. (See the On Screen conversation with Amir Majidimehr, Corporate Vice President of Microsofts Windows Digital Media Division in Issue 87, August 2004.)
And speaking of Blu-ray Disc Founders member exclusive support for their sides format, I was told in private conversations with some member company representatives, that unofficially, some of these companies, including those supposedly backing HD DVD, planned to offer solutions in both formats to satisfy customers needs should a clear format battle winner or common solution not prove to materialize. This is still a possible scenario if both incompatible formats succeed in becoming successful independently. This scenario is a reminder of the current market situation with respect to multichannel digital audio formats Super Audio Compact Disc (SA-CD) and DVD-Audio, which has suffered due to the lack of affordably priced mass-market universal DVD players that can also support these surround music platforms. As a result, the lack of a common standard has kept confused consumers away and retailers caught in the middle.
The only hope, as I see it, for the proponents of HD DVD to end up as the standard-bearer winner is that either their claim that the Blu-ray Disc format is vaporware will prove to be so or the major studios will ultimately show overwhelming support for the format and reject the Blu-ray Disc as a next-generation replacement for DVD.
Lucky Seven DVD Conference
Vaporware is a strong word to describe your opponents technical prowess, especially Sony and Philips, inventors of the CD. But that is exactly the term that was used by Warren Lieberfarb in a heated presentation at the Third Annual Home Entertainment Summit and Lucky Seven DVD Conference. The event, sponsored by Video Store magazine, was held at the Wyndham Bel Age Hotel in Los Angeles on June 8, just a few days preceding the Blu-ray Disc Content Summit Meeting 2004. Lieberfarb accused Sony and Philips, the original joint venture companies that created the Blu-ray Disc Founders Group, and the other backers of the Blu-ray Disc format of trying to bluff the studios into supporting Blu-ray and create a sense of inevitability around Blu-ray before the format is really ready for prime time. Lieberfarb stressed the urgency for a decision to be made post-haste.
Lieberfarb said that there will be more available via television and more conveniently than ever before. The studios need a high-definition package media solution to compete with this new world of high-definition that is on its way.
Lieberfarb has said in one-on-one conversations that Sony and Philips are doing everything they can to undermine the mission of the open standard-supported DVD Forum, in order to promote their own proprietary closed standards. They have ignored the DVD Forum, which is the same industry group which led the technology to todays DVD, he said. They have been able to attract other companies on the basis of extending an intellectual property interest in the Blu-ray Disc format and the promise of sharing in the royalties to be derived. This is a very intense conflict over intellectual property, said Lieberfarb.
Lieberfarb outlined what the Hollywood Advisory Council, a group of studio representatives, issued as their wish list of features for a next-generation high-definition optical disc:
- Maximum compatibility with the current DVD format
- Advanced copy protection which is both removable and revocable
- Superior picture and discrete multichannel high-resolution sound quality
- Efficient disc manufacturing
- Higher capacity
- Lower cost through enabling the current DVD manufacturing vendors to efficiently manage production between DVD and HD during the transition
- Efficient manufacturing yields and cycle times
- Internet connectivity to provide updated information from the Web
- Multimedia interactivity that adds value and motivation to people wanting to replace their libraries
- Reliable performance
- Playback verification and compatibility among CE and PC device manufacturers
Lieberfarb claimed the Blu-ray Disc format would entail high-costs and less flexibility for the studios compared to the HD DVD format, which is based on the current DVD standard. I challenge you (addressing Sony representatives in particular) to prove to all of us here that Blu-ray is a real format, said Lieberfarb.
Lieberfarb pointed to a three-and-half-second cycle time with 98 percent-plus yields for 30 GB HD DVD dual-layer disc replication and said that a single, high-definition DVD and standard-definition DVD manufacturing line has been shown to be switchable between formats within five minutes.
But before leaving the podium he issued a challenge to the Blu-ray Disc leaders to disclose the answers to the issues pertaining to the mastering process, which Lieberfarb contended used mastering technology that is three years old and was never perfected then and its successor has not been developed as yet, successfully. If you cant master the product, you cant replicate the product, he said.
The Lieberfarb reference was to a Pioneer-developed electronic beam recorder that according to Toshiba engineers has low-recording speed compared to the laser beam recorder that is used with DVD and CD manufacturing. In our tests, it takes 20 hours to master a movie using the electronic beam recorder. Therefore, it is impractical for mass production for mastering of movies, he said. He acknowledged that a claimed improved mastering system version was under development called PTMPhase Transition Mastering. But then he quipped that the outcome of PTM hadnt been seen from the Blu-ray Disc proponents, only an announcement.
Lieberfarb also put forth that the thickness of the Blu-ray triple-lens structure negated the ability for the Blu-ray drive to be integrated into notebook computers because of its thickness, which is a function of the lens structure. Notebook facilitation, he said, was an essential feature which will give the product portability and mobility to consumers. Nine to 10 mm, thats what you need for a drive in a PC. The Blu-ray optical pickup dimensions, according to our sources, are 32 mm. Its three times the thickness of where the standard is for drives in notebooks today.
Finally, Lieberfarb concluded with, And now I challenge Blu-ray to deliver the reality of the 50 GB disc. I maintain that it is not manufacturable, and therefore Blu-ray (ROM), if it exists at all, is a 25 GB product. Therefore it has less data capacity than the HD DVD product, which has a 30 GB capacity. He further stated that if the 50 GB product cant be made, the notion that more is better and that the creative community will use whatever we give them, and the consumer will pay for that value, is facetious. Suddenly if you dont have 50 GBs, you cant give it to anyone to use and I wont comment on the cost benefit of all the additional content if in fact there is no media in reality to put it on. I also warn you that 30 GBs will satisfy the appetite of the most creative creatives as well as the movie.
Lieberfarb wasnt through when he said it was key to note that HD DVD specifications have been issued and therefore manufacturing can commence. He said that the last remaining specifications for interactivity and Web connectivity will be resolved in the next month or two. In other words, he said, the HD DVD format standardization will be completed this year. If the industry wants product in the market for 2005 to take advantage of the new features of higher picture quality, better audio, security, interactivity, and Web connectivity, decisions have to be made so that manufacturers can begin sourcing components, building lines, etc. So Hollywood has a decision to make and the decision is now.
With an air of confidence, Blu-ray Disc format spokespersons Mike Fidler; Richard Doherty, General Manager, Panasonic Hollywood Laboratories; and Maureen Weber, General Manager, Optical Storage Solutions, Hewlett-Packard replied that the Blu-ray Disc format would be ready for prime time by the end of 2005 and that costs would quickly fall in line with DVD because replicators could use about 40 to 50 percent of the assets of current DVD production to make Blu-ray Discs.
But back at the IRMA Forum, Dominick DallaVerde, Cinrams Director of Engineering and again at the Lucky Seven DVD Conference reported that HD DVD discs can be manufactured using the same equipment as current DVDs, with minor adjustments, resulting in a parity in running costs to DVD at launch. Even before the issue is resolved of whether a format will succeed, we have to define what the format needs in manufacturing processes and what modifications to existing or new equipment we need to manufacture it, said DallaVerde.
Lieberfarb during the IRMA Forum took the opportunity to comment on DallaVerdes report saying that the most important factor in going forward on a next-generation video disc is the cost of manufacturing.
Addressing the cost issue Doherty said, We can talk about dimes and pennies, and I think in the future we will, but in terms of 15 million new discs per month, you are going to be not more than 10 percent of DVD costs. Given the incredible capacity advantage of Blu-ray, its difficult to say that we should fight over 5 cents, 10 cents, or 25 cents. The margins on these devices are quite significant and warrant a very moderate increase in cost.
While Lieberfarb at the Lucky Seven Conference questioned the capability of the Blu-ray Disc technology to deliver on its promise of more capacity with single-sided dual-layer ROM discs and challenged Sony to prove that it could actually manufacture Blu-ray Discs in the volume necessary to support a viable studio business, this pronouncement was strongly denounced in a rebuttal exchange by Blu-ray Disc spokespersons. Doherty said that Panasonic would introduce, in Japan on July 14, a dual-layer 50 GB recordable Blu-ray Disc model with DVD RAM, DVD-R, CD-RW, CD-R, as well as DVD and CD playback capability. Furthermore, he said that prototype dual-layer replication lines were already in advanced test stages producing millions of prerecorded replicated discs, achieving cycle times of five seconds with greater than 80 percent yield. (DVD cycle times are less than 4 seconds with 90 percent or more yield). He noted that the target at launch is a cycle time of 4 seconds with a yield over 90 percent.
Doherty stressed that the decision to use the variable rate MPEG-2 codec scheme, at processing speeds of up to 36 megabits per second, would enable content creators to generate picture quality that will be unequaled, and that MPEG-2 was the standard for high-definition broadcast. Yet he acknowledged that we are very much in the same way as HD DVD looking at advanced codecs and advanced compression technology for audio as well as for additional value added materials and new forms of enhanced interactivity.
Mike Fidler, without specifically addressing the challenges of proof issued by Lieberfarb, stressed that the Blu-ray Disc Founders Group was composed of no less than 13 companies. These companies are not just world-class leaders, but theyre engaged in every part of the value chain, every part of development of technology. I dont think there is any issue with any of the technology developments that will occur with this format as we move forward bringing this technology effectively to the marketplace. If you look at the size and scope of the companies that are involved, both in the CE space as well as the PC space, these are companies that dominate their fields and (are in a position to) provide resources to take new technologies to market to establish a new format. What the BD group decided to do was, quite frankly, take a revolutionary approach to the business and build for the future.
Maureen Weber talked specifically about why Hewlett-Packard didnt choose HD DVD as a solution. I think the number one reason is that we saw this as an interim solution that would last approximately three years. We believe that (HD DVD) is built on archaic technology and that we need to move forward for additional revolutionary features that will be enabled in Blu-ray. Weber concluded saying, Each of the 13 companies have developed actual products that can fully round out this convergence message, and personally HP is excited to be helping to develop the next-generation format because we can truly make a convergence format.
Columbia TriStars Feingold emphasized that HD would allow (the studios) to provide content for the 25 million displays projected to be sold in 2005 and 2006 and keep their package media revenue. He called the DVD Forums proposal to extend the current DVD standard into high-definition an interim step when whats needed is a leap.
Content Summit Meeting 2004 redux
In order to keep a chronological order to the series of back-to-back events I am reporting on, I now take you back to the Content Summit Meeting 2004.
Richard Doherty remarked that the Blu-ray Disc specs will be completed by the end of the year.
Again the key and advantageous feature stressed was Blu-rays enormous capacity. Were seeing more and more supplemental extras and multiple discs with high-definition material as the next feature set for such material, Doherty said. Limited editions, collectors editions, the amount of supplemental material, and just the sheer amount of discs that are produced as part of a title continue to increase time over time.
Doherty said the consortium was focused on making sure Blu-ray had the highest possible video playback quality and stated that you need capacity to make tradeoffs among compression ratios so a content author can choose between what level of compression they want to use versus how much capacity they want to use up.
Doherty said that Blu-ray is a long-term format, and the technology has a lot of longevity and not limited to two-layers. He also noted that based on studio feedback we heard specific requests to integrate an advance video codec into the Blu-ray format in addition to MPEG-2. He cited MPEG-4 AVC with FRExt as a new advanced video codec profile proposed for MPEG-4. We expect to make a final decision on exactly what codecs will be included in July based on visual quality evaluations and business considerations such as licensing fees and making sure the standards are fairly open and that we have a say in the standard specifications.
Doherty reviewed the results of a recent visual quality test of MPEG-4 AVC with FRExt. At 8 and 12 megabits per second it actually has been judged to be superior to D-VHS and at 16 and 20 megabits per second it is indistinguishable from the D-5 original source tape. While we are seeing really high quality results with this codec a content creator still has tradeoffs to make in terms of quality between 8 and 16 megabits per second. Doherty said that using MPEG-4 would allow a single-layer Blu-ray disc to hold a three-hour HD feature along with three audio tracks and standard-definition extras of about six hours. At 12 megabits per second for video coding and 3 megabits per second for audio coding the video and audio quality would be excellent.
Erin Sullivan, Director of Planning, Panasonic, demonstrated the features of Blu-ray with high-definition, full color menus and improved navigation using animated buttons and click sounds. Sullivan also showed a connected players capability to download additional content (both free and monetized supplementary product sales) and unlock content on the disc via a studio Website. She also showed a Java interface, which will support interactive games and the control of movie playback. Sullivan concluded with, HD movie content, interactivity, and a direct connection to the studio for new content will enrich the movie experience for the consumer.
Brian Zucker, Technology Evangelist at Dell talked about Dells involvement as a PC developer and provider, and Dells commitment to help solve some of the problems that have been inherent in PCs just dealing with content protection.
Ed Gehrich, Director of Engineering, Sony Digital Audio Disc Company and Shinya Abe, Senior Engineer, Panasonic, presented a Blu-ray Disc ROM manufacturing update and cost analysis.
Bruce Youmans, Vice President Marketing, TDK USA, gave an impressive bare disc hard-coat layer demonstration comparing the robustness of a standard DVD disc to a Blu-ray Disc showing that the BD disc actually performed better under severe abuse conditions.
Maureen Weber laid out the Best of Class five Cs of Blu-ray Disc: Capacity, Cost, Content Protection, Creative Features, and Consumer Reach. She stressed that the rapid growth of HDTV in the U.S. will be the foundation for a big opportunity for HD packaged media. And she outlined by category the many Blu-ray Disc products to be launched and the wide industry support for Blu-ray Disc with member companies having strong LSI capabilities. The introduction of CE devices will be supported by Hitachi, LGE, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, and Thomson. PC products will be supported by HP, Dell, Sony, and Panasonic. And media manufacturers supporting the format are TDK, Technicolor, Panasonic, and Sony. Once more the theme of industry strength was addressed.
Weber said that support for BD had most of the industry in CE devices, 50 percent of the industry that produces PCs, and major media manufacturers supporting the format.
Andy Parsons, Senior Vice President, Advanced Product Development, Pioneer, fielded questions. I offered up two questions. The first was Will regional coding be implemented on Blu-ray Discs as a tool to control when and where discs can be viewed globally? Parsons said that would be dependent on whether the studios wanted regional coding. There are a number of studios expressing interest in that and its under discussion right now but there is no final conclusion whether or not that will be part of the format. Its a bit early to say. Its been made clear to us that some studios like the idea. Were relatively neutral on it. If there is a consensus that can be reached then it would be possible there would be regional coding, but it hasnt been defined yet. Should the studios want regional coding the feature would have to be a mandatory requirement and be built into the architecture of all players.
My second question pertained to the Blu-ray Disc Founders Group emphasis on single-disc capacity. But is the notion of capacity is king dependent on a second layer? I pointed out that DVD offers single DVD-18 disc capacity using two sides each with a dual layer, but that was rejected by consumers who felt shafted for having to pay a premium for content once labeled bonus, and delivered on two discs, not one. To boot, the discs were void of art, which made it difficult to determine what was on the discs sides while having to strain ones eyes in order to read the tiny band of text and color around the stacking ring. So with higher capacity such a cornerstone for Blu-ray superiority, in the end the consumer may reject the packed single disc in favor of two or more discs as better perceived value.
Parsons said that we have learned that capacity is king and that is what ultimately drives a format and therefore the dual-layer disc will be very, very important for the future growth of titles. Parsons addressed the perceived value of multiple discs saying that is a marketing issue that the individual studios will have to address in terms of whether it makes sense for them to go with a multiple disc set or try to make the lowest possible manufacturing cost for them and really focus on the value of the high-definition content.
Private Conversations
In a private conversation with Maureen Weber, I asked about the assertion that Warren Lieberfarb made that the thickness of the Blu-ray triple-lens structure negated the ability for the Blu-ray Disc drive to be integrated into notebook computers. She said that statement was absurd. Why would HP and Dell join forces with Panasonic, the number one slim drive supplier, and why would HP and Dell accept something that wouldnt fit in our notebooks? We wouldnt. Weber said the height issue was two years old and has been solved.
Richard Doherty acknowledged that outside of Columbia TriStar, no other studio has committed to either Blu-ray Disc or to HD DVD saying that makes perfect business sense. Theyre motivated to delay as long as possible. Theres no reason they should make an early decision.
Weber commented that Its a negotiation strategy.
Its good for them, said Doherty to get more concessions out of the different sides.
I asked, what concessions? Doherty replied, Certainly format specifications. Certainly cost information. Certainly copy protection.
I then asked, When do you think the magic will happen that everything will turn to Blu-ray and there will be actually one format? Weber replied, Actually, were hopeful by the end of 04 at the latest, so that people can get on with building product, building media, and delivering content.
Regarding backward compatibility with DVD, Doherty said that every Blu-ray Disc player would have a red-laser player in it. It would be product suicide not to play back DVD and all the existing disc formats at the same physical specification (for each format). And youre going to get really good DVD quality, too, through the digital interfaces and built-in scalers that will make DVDs look even more superior on Blu-ray Disc players.
Finally, I asked Doherty, Will component video be part of the Blu-ray specifications He replied, That, as you probably know, is controversial. So that hasnt been fully negotiated yet as to how that is going to be implemented. Thats difficult because Japan has a huge installed base of component video input displays. He further stated, Thats a very sensitive issue. Studios would very much like that to never occur if possible. Nevertheless, there will certainly be the digital interconnects (DVI, HDMI), no matter what, and that really is going to give you the highest quality picture you can possibly get.
Copy Protection
In the final analysis, there is still the unresolved issue of copy protection, which overrides all other differences between the two competing formats. Hollywood does not want to see a repeat of the failure of the copy protection mechanisms used for DVD, which was, in large measure, due to the U.S. National Security Agencys restrictions on using more advanced encryption technologies. It prohibited the bit length of the key called CSS (Content Scrambling System) to be anything greater than 40 bits, as part of export controls and surveillance requirements.
There is a group called ACMSAdvanced Copying Management Systemwhich has a consortium of content owners, CE and IT members, including members of both the Blu-ray Disc Founders Group and HD DVD, along with companies such as IBM, Intel, and Microsoft. They are developing a removable and revocable advanced encryption system using the AES standard 128-bit key as compared to the 40-bit key that is in standard-definition DVD. As noted, back when DVD was launched, the U.S. government through National Security Agency order prohibited the key length employed for encryption systems to be any longer that 40 bits, so that they would not have difficulty having to break into networks that they wanted to spy on.
Warren Lieberfarb said that all the copy protection controls described by the Blu-ray Disc Founders Group will be equaled or exceeded by HD DVDs advanced copy management system, so I take copy protection off the table as a significant source of differentiation.
But Richard Doherty said at the Content Summit Meeting 2004 that there was also a technology unique to the Blu-ray Disc format that is specifically part of the physical media that prevents it from doing bit-by-bit duplication. And he said that HP and Dell are dedicated to making sure that playback on a PC is done securely and that includes such things as bus encryption in the PC environment. Only people who are properly licensed can actually make discs, he said.
While both camps say they have developed sophisticated proprietary copy protection schemes for their respective formats, they have yet to make specifications available and submit their schemes for testing by the technical staffs of the studios. Both camps are investigating the possible adoption of ACMS as well. The outcome of these tests will be the primary determining factor that will overshadow all other format capabilities. Until such full disclosure on copy protection, the studios, except for Sony-owned Sony Pictures Entertainments Columbia TriStar, are expected to remain non-committed and choose not to release content in either format until testing shows that their requirements are met.
Blu-ray Disc Association
In May, Blu-ray Disc proponents announced plans to create the Blu-ray Disc Association (BDA). The association, which will act as an extension of the Blu-ray Disc Founders Group, will be open to infrastructure companies such as replicators, authoring houses, and other support service providers interested in capitalizing on the formats launch. There will be four levels of membership with memberships accepted in the summer time frame. The idea is that the Blu-ray Disc Association will bring together all the major patent holders and if things go according to plans, BDA will become the organization for high-definition and the DVD Forum will remain the organization for standard-definition.
During the Content Summit Meeting 2004, Dr. Frans Bos, Strategic Alliance Manager, Philips Optical Storage, discussed the overall structure of the new Blu-ray Disc Association (BDA). The organization will be headed by a board of directors, which will set overall strategy and make key decisions, with a Joint Technical Committee (JTC) that creates the standards, a Compliance Committee that upholds the standards, and a Promotion Committee that promotes the standards. Anybody who is willing to promote Blu-ray Disc can participate, regardless of ones status (e.g., licensor, licensee or whatever). Bos said there will be BDA contributor seminars in the U.S. on July 28 and in Japan on August 3 with October slated for the official launch.
Blu-ray Disc Founders Group Support For Microsoft Codec
Microsofts proposal to include its Windows Media 9 Series applications in the specs for the Blu-ray Disc format was rejected last year by the Blu-ray Disc Founders Group, saying that the Blu-ray Disc format would extend support exclusively for the MPEG-2 compression/decompression codec.
Some analysis believe that this decision to exclude Microsoft was based on a fear that the PC industry would aggressively dominant home entertainment and that high-speed Internet connections will work their way into the home in set-top boxes, optical disc players, and digital video recorders with hard disk drives and ultimately make prerecorded discs less relevant as younger generation consumers download more music and movies.
But due to pressures from certain studios, the group is now reconsidering their decision to exclude Microsofts codec and as well, MPEG-4 Advanced Video Codec AVC (H.264), both designed to work effectively through Internet connections. Still another new image compression scheme emerging that reportedly exceeds the performance of MPEG-2 is JPEG2000, developed by Dolby Laboratories. But there is no word on whether this codec will be considered by either camp.
Several of the Blu-ray Disc Founders Group members hold essential patent stakes in the MPEG technologies. Sony holds a majority of the MPEG-4 Visual patents, followed by Matsushita and Toshiba, and is also the major MPEG-2 patent licensor.
Support for Windows Media Video HD and as well, H.264 codecs is an exciting proposition because it would combine Blu-ray storage density with efficient compression schemes to enable HD movie playback from tinier discs that could fit into hand-held devices.
Whatever the decision, either or both codecs will by a mandatory requirement in the final Blu-ray Disc specification. This means that, just as with the mandatory requirement for multichannel uncompressed or lossless linear PCM, Dolby® Digital, and DTS® Digital Surround, content owners can choose whether or not to use a particular codec because all of the players will support each codec.
Conclusions
It is still too early to call a winner in the battle of self-interests and royalties. One thing is certain and that is the importance of cross-industry support to come up with a de facto standard, which includes the CE (consumer electronics) industry, the IT (information technology) industry, and Hollywood. There is no denying that without the unified support of major Hollywood studios there will never be a common solution.
As noted, this contest is really about moneypotentially huge amounts of it from future licensing. That is why the Blu-ray Disc Founders Group will not bow out simply because the DVD Forum has sanctioned HD DVD.
Oh, for the people wondering what the diff between AVC H.264 Main profile (HD DVD) and AVC H.264 FREext High Profile (BRD):
AVC H.264 FREext High Profile(BRD)= AVC H.264 Main profile (HD DVD)
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8x8 transform
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quantization matrix
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4:2:0/4:2:2/4:4:4 color sampling formats
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10bit/12bit sampling
VC-9 have a quantization matrix and 8x8 transform as well, FYI