What is Blu-ray Disc , features ,supported formats , audio video , why named blu-ray

What is Blu-ray Disc

Blu-ray or Blu Ray disc is the next generation optical disc format which is developed jointly by Blu-ray Disc Association (BDA) and personal computer and media manufacturers (like Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson). This format was developed to enable recording, rewriting and playback of high-definition Video (HD) and storing large amount of data.This format currently offer more than five times the capacity of normal DVD, Blu-ray disc comes in single layer and double layer format, which stores 25 GB and 50 GB respectively.

Why the name Blu-ray

The name Blu-ray is derived from the underlying technology, which utilizes a blue-violet laser to read and write data. The name is a combination of “Blue” (blue-violet laser) and “Ray” (optical ray). According to the Blu-ray Disc Association the spelling of “Blu-ray” is not a mistake, the character “e” was intentionally left out so the term could be registered as a trademark.

How much video can you fit on a Blu-ray disc?

Over 9 hours of high-definition (HD) video on a 50GB disc.
About 23 hours of standard-definition (SD) video on a 50GB disc

what extra you can do with Blu-ray Disc

• Record HD without any quality loss
• Skip to any spot on disc
• Create playlist
• Automatically search for empty space on disc
• Access web to download subtitles

Supported Video codecs by Blu-ray

+ MPEG-2
+ MPEG-4 AVC
+ SMPTE VC-1

Supported Audio codecs by Blu-ray

+ Linear PCM (LPCM) – (mandatory)
+ Dolby Digital (DD) – (mandatory)
+ Dolby Digital Plus (DD+)
+ Dolby TrueHD
+ DTS Digital Surround – (mandatory)
+ DTS-HD High Resolution Audio
+ DTS-HD Master Audio

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