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The current optical disc format for high-definition (HD) video at 2K resolution (for 4K Blu-ray, see Ultra HD Blu-ray). Developed primarily by Sony, Blu-ray discs have the same diameter as DVDs, but the pits are a third the size on tracks packed more tightly together. As a result, movies with 1,080 lines of resolution can be recorded, compared to 480 or 576 for a DVD (U.S. NTSC format is 480 lines, PAL format is 576 lines). Blu-ray players read CDs and DVDs, support navigation via menus programmed in Java and feature advanced audio and video formats (see Java, Dolby Digital, DTS, H.264, VC-1).

Commentary and Extra Content
All players support Profile 1.0. Bonus View (Profile 1.1) requires 256MB of flash memory and uses a second A/V codec for running picture-in-picture commentary. BD-Live (Profile 2) requires 1GB of flash to access content from the Internet such as scenes that were cut, interviews with the director and actor history. See BD-Live.

Blu-ray History
In 2003, the first Blu-ray recorders were sold in Japan, and in 2006, Sony's PlayStation 3 was one of the early products to feature a Blu-ray drive (see PlayStation). For several years, Blu-ray competed with HD DVD for the new high-res standard, but HD DVD was later abandoned (see HD DVD). See HD formats, Blu-ray 3D, DVD and DTV.

FULL-SIZE 120MM DISCS    Record  ---Modes--Layers          GB  Hours  ROM  RE  RDVD (480/576 lines)
  Single (DVD-5)  4.3   2     X   X   X
  Dual   (DVD-9)  7.9   4     X   X   X

  BLU-RAY (1,080 lines)
  Single          25    4.5   X   X   X
  Dual            50    9     X   X   X
  Triple BDXL    100   18         X   X
  Quad BDXL      128   23             X

    ROM = Read Only (pressed movie disc)RE = REwritableR = Recordable (write once)

Blu-ray and More
The award-winning Oppo BDP-103 plays Blu-ray, Blu-ray 3D and DVD movies, numerous video formats from a USB flash drive (orange USB inserted), as well as music from CD, SACD and DVD-Audio discs. "FW Found" means a firmware update is available.

Blu-ray Disc Xtra Large (BDXL)
For permanent archival storage, this Sony optical system records on quad-layer BDXL discs one time only. The plastic demo unit (top) reveals all 12 discs in the 1.5TB cartridge (see table above).
References in periodicals archive ?
Warner Bros Entertainment last month announced it would release film discs only in the Bluray format.
The consumer's expectation of streaming video is to match a DVD or BluRay playback experience," said Tim Higgins, managing editor of SmallNetBuilder, the premier review and analysis site for consumer and SOHO/SMB networking.
The blend of comedy and utterly believable characters puts most recent animated features to shame and the pivotal stampede sequence is even more thrilling in 3D, available on one version of the Bluray.
com) has completely rebuilt their flagship product WinX DVD to iPhone Ripper with Blu-ray disc supported features and renamed it WinX Bluray iPhone DVD Ripper.
TAMBA's viral clients include Virgin Active, Kwik Fit, Lovefilm and Sony BluRay.
One lucky winner will win a 32in Panasonic Viera HDready TV, Sony Bluray player, Sony mini camcorder, Deluxe X-Rocker Recliner, plus the movie on Bluray.
DISCOVER the magic of a child's imagination with Disney's Bedtime Stories, released yesterday on Bluray and DVD.
We've got pounds 6000 of prizes to give away including a two-week, all-inclusive holiday, a BluRay video camera, an Acer laptop and LCD TVs.
Rethinking the Digital Audio Workstation - Wireless Audio Streaming - BluRay Audio
The all-action underwater adventure Sanctum is the latest film from James Cameron (Avatar and Titanic) and is out tomorrow on DVD, Bluray and 3D Blu-ray Super Play (including 3D and 2D versions of the film and Digital Copy) from Universal Pictures International Entertainment.
Winner: 46 inch Sharp LCD TV rrp pounds 999, Bluray player rrp pounds 249, 5.
A Sony spokeswoman said her company's commitment to Bluray was unchanged and she declined to comment on whether the Toshiba-NEC format would pose a threat to acceptance of Blu-ray as an industry standard.