The BD format was developed by the Blu-ray Disc Association, a group representing makers of consumer electronics, computer hardware, and motion pictures.

Besides these hardware specifications, Blu-ray is associated with a set of multimedia formats. DVD-Video discs were limited to a maximum resolution of 480p ( NTSC, 720×480 pixels) or 576p ( PAL, 720×576 pixels). High-definition (HD) video may be stored on Blu-ray discs with up to 2160p resolution (3840×2160 pixels) and at up to 60 frames per second. Triple-layer discs (100 GB) and quadruple-layer discs (128 GB) are available for BD-XL re-writer drives.

Conventional or pre-BD-XL Blu-ray discs contain 25 GB per layer, with dual layer discs (50 GB) being the industry standard for feature-length video discs. The plastic disc is 120 millimetres (4.7 in) in diameter and 1.2 millimetres (0.047 in) thick, the same size as DVDs and CDs. The name 'Blu-ray' refers to the blue laser (actually a violet laser) used to read the disc, which allows information to be stored at a greater density than is possible with the longer-wavelength red laser used for DVDs. The main application of Blu-ray is as a medium for video material such as feature films and for the physical distribution of video games for the PlayStation 3, PlayStation 4 and Xbox One. It was designed to supersede the DVD format, and is capable of storing several hours of video in high-definition (HDTV 720p and 1080p) and ultra high-definition resolution ( 2160p).

High-Definition Versatile Multilayer Disc (HD VMD)īlu-ray or Blu-ray Disc ( BD) is a digital optical disc data storage format.

HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM.

Blu-ray Disc ( BD): BD-R & BD-RE, Blu-ray 3D, Mini Blu-ray Disc.

DVD: DVD-R, DVD+R, DVD-R DL, DVD+R DL, DVD-R DS, DVD+R DS, DVD-RW, DVD+RW, DVD-RAM, DVD-D, DVD-A, HVD, EcoDisc, MiniDVD.

Compact disc ( CD): CD-DA, CD-ROM, CD-R, CD-RW, 5.1 Music Disc, Super Audio CD ( SACD), Photo CD, CD Video ( CDV), Video CD ( VCD), Super Video CD ( SVCD), CD+G, CD-Text, CD-ROM XA, CD-i, MIL-CD, Mini CD.

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