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The Blu-ray specification and all currently available players support region coding. As of July 2008 about 66.7% of Blu-ray Disc titles are region-free and 33.3% use region codes. [6] The HD DVD specification had no region coding, so a HD DVD from anywhere in the world will work in any player.
The Blu-ray/HD DVD conflict resembled the earlier videotape format war between VHS and Betamax, partly because of Sony's strong involvement in both episodes. These format wars have often proved destructive to both camps because consumers, afraid of committing to a losing standard, would refrain from purchasing either. [3]
Ultra HD Blu-ray (4K Ultra HD, UHD-BD, or 4K Blu-ray) [2] [3] is a digital optical disc data storage format that is an enhanced variant of Blu-ray. [4] Ultra HD Blu-ray supports 4K UHD (3840 × 2160 pixel resolution) video at frame rates up to 60 progressive frames per second, [ 4 ] encoded using High-Efficiency Video Coding . [ 4 ]
Early 4K Blu-ray release at Best Buy. A 4K Blu-ray Disc player was also released. On January 7, 2013, Sony announced that it would release "Mastered in 4K" Blu-ray Disc titles sourced at 4K and encoded at 1080p. [77] "Mastered in 4K" Blu-ray Disc titles can be played on existing Blu-ray Disc players and have a larger color space using xvYCC.
Blu-ray Disc titles can combine standard definition video with high definition audio tracks. [4] [5] Lossless audio is more practical and flexible on Blu-ray than on DVD, which only supports lossless PCM in 48 kHz stereo and requires a relatively large amount of data, leaving less storage space available for the video. In contrast, Blu-ray ...
High-resolution audio (high-definition audio or HD audio) is a term for audio files with greater than 44.1 kHz sample rate or higher than 16-bit audio bit depth. It commonly refers to 96 or 192 kHz sample rates. However, 44.1 kHz/24-bit, 48 kHz/24-bit and 88.2 kHz/24-bit recordings also exist that are labeled HD audio.
Hearst Metrotone News (renamed News of the Day in 1936) newsreel series produced by Hearst Corporation from 1914 to 1967 was distributed by Fox Film Corporation 1929-1934 and by MGM 1934-1967, archived at the UCLA Film and Television Archive and Packard Humanities Institute; Paramount News newsreel series produced by Paramount Pictures from ...
For better compatibility with Blu-ray Disc players AVCHD video can be authored on Blu-ray Disc media as Blu-ray Disc video. Authoring a Blu-ray Disc video title does not require re-encoding of AVCHD audio and video streams. The resultant disc plays in any Blu-ray Disc player, including those that do not explicitly support AVCHD.