Georgia Hilton MPE CAS MPSE Prod/Dir/Editor

Film Services Professional ( Producing / Editing / Delivery )


Blu-ray disc UDF 2.6 specs and stuff

Posted on February 28, 2010 at 12:52 AM

Blu-ray disc UDF 2.6 specs and stuff here'ssome links and some blu-ray information. I needed to do my homeworksince I realized how little I actually knew about Blu-ray...

Blu-ray Disc is a next-generation, optical disc format that enables theultimate high-def entertainment experience. Blu-ray Disc provides thesekey features and advantages:

Maximum picture resolution. Blu-ray Disc delivers full 1080p* video resolution to provide pristine picture quality.

Largest capacity available anywhere (25 GB single layer/50 GB duallayer). Blu-ray Disc offers up to 5X the capacity of today’s DVDs.

Best audio possible. Blu-ray Disc provides as many as 7.1 channels ofnative, uncompressed surround sound for crystal-clear audioentertainment.

Enhanced interactivity. Enjoy such capabilities as seamless menunavigation, exciting, new bonus features, and network/Internetconnectivity.

Broadest industry support from brands you trust. More than 90% of majorHollywood studios, virtually all leading consumer electronicscompanies, four of the top computer brands, the world’s two largestmusic companies, PLAYSTATION® 3 and the leading gaming companies, allsupport Blu-ray Disc.

The largest selection of high-def playback devices.Blu-ray Disc issupported by many of the leading consumer electronics and computingmanufacturers. That means you can maximize the use of your HDTV andyour home entertainment system with the widest selection of high-defplayback devices—including players, recorders, computers, aftermarketdrives and the PLAYSTATION® 3 game console.

Backward compatibility**. Blu-ray Disc players enable you to continue to view and enjoy your existing DVD libraries.

Disc robustness. Breakthroughs in hard-coating technologies enableBlu-ray Disc to offer the strongest resistance to scratches andfingerprints.

Public Specifications

Dolby Authoring and Mastering Solutions for High-Definition Disc Media, Blu-ray DVD, HD DVD, and DTV - Blu-ray Movies, Players, Recorders, Media and Software

codecs for Blu-ray

Linear PCM (LPCM) - up to 8 channels of uncompressed audio. (mandatory)

Dolby Digital (DD) - format used for DVDs, 5.1-channel surround sound. (mandatory)

Dolby Digital Plus (DD+) - extension of Dolby Digital, 7.1-channel surround sound. (optional)

Dolby TrueHD - lossless encoding of up to 8 channels of audio. (optional)

DTS Digital Surround - format used for DVDs, 5.1-channel surround sound. (mandatory)

DTS-HD High Resolution Audio - extension of DTS, 7.1-channel surround sound. (optional)

DTS-HD Master Audio - lossless encoding of up to 8 channels of audio. (optional)

Blu-ray Disc for Movie Distribution


Most people know about Blu-ray Disc's basic features: It can store 25GB (single layer) or 50 GB (dual layer) on a single-sided disc - about5 to 10 times the capacity of DVD. As a result, Blu-ray Disc supportsthe highest quality HD video available in the industry (up to 1920 x1080 at 40 Mbit/sec). Large capacity means no compromise on videoquality. Furthermore, a Blu-ray Disc has the same familiar size andlook as DVD, allowing for compatibility with existing discs.

Compatibility across full family

Blu-ray Disc Rewritable (BD-RE) and related video specifications werefirst defined in 2003. The Blu-ray Disc ROM format for moviedistribution is fully based on this specification when it was definedin 2004. As a result, users can play home-recorded discs on all oftheir Blu-ray Disc equipment; there are no playback compatibilityissues as with rewritable DVD formats. The Video Distribution formatwas widely expanded to offer content producers a full range ofadditional features unavailable in the home recording format.

Video highlights

The BD-ROM format for movie distribution supports three highly advancedvideo codecs, including MPEG-2, so an author can choose the mostsuitable one for a particular application. All codecs are industrystandards, meaning easy integration with existing authoring tools, andchoice from wide range of encoding solutions. All consumer videoresolutions are available:

- 1920 x 1080 HD (50i, 60i and 24p)

- 1280 x 720 HD (50p, 60p and 24p)

- 720 x 576/480 SD (50i or 60i)

Audio highlights

The BD-ROM format for movie distribution supports various advancedaudio codecs, so an author can choose the most suitable for aparticular application. The high capacity and data rate of Blu-ray Discallow for extreme high quality audio in up to 8 channels to accompanyHigh Definition video. Final audio specifications include DTS (coreformat), Dolby Digital AC-3 and LPCM (up to 96/24) . Optionally, theformat might support DTS++ and LPCM 192/24 7.1.

Exceed DVD feature set

The Blu-ray Disc movie distribution format was designed to offer all ofthe features and the familiar user interface model of DVD-Video.However, content producers have a wide array of new and extendedfeatures to be included in a Blu-ray Disc title. For this, two profilesare available:

"HDMV" mode

Offers all features of DVD-Video and more. The authoring process is in line with DVD-Video creation.

"BD-J" mode

Offers unparalleled flexibility and features, because it is based onthe Java runtime environment. It allows for extensive interactiveapplications, and offers Internet connectivity.

"HDMV" mode


"HDMV" mode was designed to offer exciting new features, while keepingthe authoring process as simple as possible. It streamlines theproduction of both Blu-ray Disc as well as DVD-Video titles, as theproduction process incorporates many identical phases. It offersimproved navigational and menu features, improved graphics andanimation, improved subtitling support and new features like browsableslideshows.

"Out-of-mux" reading

Unlike DVD-Video, the Blu-ray Disc format allows for data to be readfrom a different location on the disc, while uninterruptedly decodingand playing back video. This allows the system to call up menus,overlay graphics, pictures, button sounds, etc. at user request withoutstopping playback. Some examples of possibilities will be explainedlater.

Graphic planes

Two individual, full HD resolution (1920x1080) graphics planes areavailable, on top of the HD video plane. One plane is assigned tovideo-related, frame accurate graphics (like subtitles), and the otherplane is assigned to interactive graphical elements, such as buttons ormenus. For both planes, various wipes, fades and scroll effects areavailable, for example to present a menu.

Button graphics

Menu buttons can have three different states: Normal, Active andSelected. They support 256 color full-resolution graphics andanimation, thereby greatly surpassing the capabilities of DVD-Video.Buttons can be called and removed during video playback, there is noneed to return to a "menu screen".

Button sounds

Button sounds can be loaded into memory of the Blu-ray Disc player.When a user highlights or selects a menu option, the sound can beplayed (such as a voice-over explaining the highlighted menu choice, orbutton clicks). These button sounds can even be mixed with the runningaudio from the movie or menu.

Multi-page menus

In DVD-Video, playback was interrupted each time a new menu screen iscalled. Due to Blu-ray Disc's ability to read data from the discwithout interrupting the current audio/video stream, a menu can consistof several pages. Users will be able to browse through the menu pagesor select different menu paths, while the audio and video remainplaying in the background.

User-browsable slideshows

In DVD-Video, user browsable slideshows were not possible withuninterrupted audio. As a result of Blu-ray Disc's ability to read datafrom the disc without interrupting the current audio/video stream,users can browse through various still pictures while the audio remainsplaying. This applies not only to forward and backward selecting: Auser can make different selections on what picture to view (or selectfrom a screen presented with thumbnail images) while the audio remainsplaying.


In DVD-Video, subtitles were stored in the audio/video stream, andtherefore they had limitations on the number of languages and displaystyles. Again, it is due to Blu-ray Disc's ability to read data fromthe disc without interrupting the current audio/video stream, thatsubtitles can be stored independently on the disc. A user may selectdifferent font styles, sizes and colors for the subtitles, or locationon screen, depending on the disc's offerings. Subtitles can beanimated, scrolled or faded in and out.

"BD-J" mode


"BD-J" mode was designed to offer the content provider almost unlimitedfunctionality when creating interactive titles. It is based on Java 2Micro Edition, so programmers will quickly be familiar with theprogramming environment for BD-J. Every Blu-ray Disc player will beequipped with a Java interpreter, so that it is capable of runningdiscs authored in BD-J mode.

Graphical User Interface

In BD-J mode, the author has complete freedom in designing the userinterface. The interface is controllable by using standard navigationalbuttons on the remote. It can display up to 32-bit dynamicallygenerated graphics (millions of colors), and it supports the display ofpictures in standard file formats like JPEG, PNG, etc.

Playback control

The BD-J application can act as the sole interface to the disc'scontents (thus replacing the player's on-screen controls as with discsauthored in HDMV mode). The BD-J environment offers all of the playbackfeatures of HDMV mode, including the selection of subtitle, trick playmodes, angles, etc. Video can even be scaled dynamically, so that itcan be played in a small size in the corner of a menu, and resume fullscreen when a selection is made.


A Blu-ray Disc player might contain a small amount of non-volatilesystem storage (flash memory). This system storage can be used to storegame scores, bookmarks, favorites from a disc, training course results,etc. As a manufacturer's option, a Blu-ray Disc player may also beequipped with Local Storage (hard disk, to allow large amounts of datalike audio/video to be stored).

Internet connection

The BD-J system supports basic Internet protocols like TCP/IP and HTTP.The player may connect to the disc publisher's web site to unlockcertain content on the disc (after certain conditions, like payment,are met), or dynamically display certain info (like theater playingschedules for a movie) on the screen. The disc's program may beextended with JPEG pictures or audio fragments downloaded from theInternet, or it can even stream full new audio/visual content to LocalStorage.


The Blu-ray Disc format for Movie Distribution offers two flexibleprofiles for the creation of titles. It was designed to allow for thestreamlined development of Blu-ray Disc (HD) and DVD-Video (SD) titlesat the same time, if needed. Basic menus and navigation can beidentical. However, it also offers many new functions that will benefitboth the author (by offering flexible ways of creating disc content),as well as end users (by offering exciting new functionality comparedto DVD-Video)

Blu-ray Disc for Video

What is the quality of Blu-ray Disc video?

Blu-ray Disc offers HDTV video quality that far surpasses any othermedium or broadcast format available today. With High Definition videowith a resolution of up to 1920x1080 and up to a 54 Mbit/sec bandwidth(roughly double that of a normal HDTV broadcast), no other format canmatch Blu-ray Disc's video quality. Furthermore, due to theoverwhelming capacity of a Blu-ray Disc, no tight compressionalgorithms that may alter the picture quality are required, as withother formats that offer less recording space. Depending on theapplication, Blu-ray Disc also supports other video formats, includingstandard definition TV.

How much video will fit on a Blu-ray Disc?

As with DVD, this depends on the decisions on the usage of videobandwidth, the number of audio tracks and other criteria made by theauthor of the disc. Furthermore, the choice of the used codec alsoinfluences playback time. On average, a single-layer disc can hold aHigh Definition feature of 135 minutes using MPEG-2, with additionalroom for 2 hours of bonus material in standard definition quality. Adouble-layer disc even extends these numbers up to 3 hours in HDquality and 9 hours of SD bonus material. Using any of the advancedcodecs, these numbers can even be significantly increased.

Do I need a new (HD) TV to use Blu-ray Disc?

No. Pre-recorded Blu-ray Disc titles will play on any standarddefinition TV set, even if the video was encoded in High Definition.Likewise, a Blu-ray Disc recorder can also record standard definitionvideo, for example from regular TV broadcasts or camcorders. A Blu-rayDisc can store around 10 hours of broadcast quality standard definitionvideo on a single-layer disc, or around 20 hours on a dual-layer disc.

How does Blu-ray Disc region coding work?

Contrary to DVD, the Blu-ray Disc region coding system divides theworld into only 3 regions, called regions A, B and C. The usage ofregion coding on a Blu-ray Disc movie title is a publisher's option. ABlu-ray Disc player will play any movie title that does not have regioncoding applied, plus all titles of its corresponding region.

Region A:

- North America

- Central America

- South America

- Korea

- Japan

- South East Asia

Region B:

- Europe

- Middle East

- Africa

- Australia

- New Zealand

Region C:

- Russia

- India

- China

- Rest of World - Blu-ray Recorders - Blu-ray Drives - Blu-ray Media

Blu-ray Disc

geeze, Now I feel even dumber... I dug thru all this over the weekendand i'm going to have to do more studying and research... I've got aBlu-ray project coming in a month....


geo __________________

ms georgia hilton mpse cas

Categories: None