4k blu ray wikipedia

This file contains additional information, probably added from the digital camera or scanner used to create or digitize 4k blu ray wikipedia. If the file has been modified from its original state, some details may not fully reflect the modified file.

This article compares the technical specifications of multiple high-definition formats, including HD DVD and Blu-ray Disc; two mutually incompatible, high-definition optical disc formats that, beginning in , attempted to improve upon and eventually replace the DVD standard. Other high-definition optical disc formats were attempted, including the multi-layered red-laser Versatile Multilayer Disc and a Chinese-made format called EVD. Both appear to have been abandoned [ citation needed ] by their respective developers. The fourth layer adds a further 28 GB. However, players introduced to the market before this date can continue to be sold without Bonus View. This process can be reversed to retrieve the original 24 frame per second content. On NTSC DVDs, 24 frame per second content is stored as 60 interlaced frames per second using a process called pulldown , which if done properly can also be reversed.

4k blu ray wikipedia

The high-definition optical disc format war was a market competition between the Blu-ray and HD DVD optical disc standards for storing high-definition video and audio; it took place between and and was won by Blu-ray Disc. The two formats emerged between and and attracted both the mutual and exclusive support of major consumer electronics manufacturers, personal computer manufacturers, television and movie producers and distributors, and software developers. In early , the war ended when several studios and distributors shifted to Blu-ray disc. These format wars have often proved destructive to both camps because consumers, afraid of committing to a losing standard, would refrain from purchasing either. The emergence of high definition players followed the entry of HDTV televisions into the mainstream market in the mids. Consumer-grade high definition players required an inexpensive storage medium capable of holding the larger amount of data needed for HD video. On February 19, , the project was officially announced as Blu-ray , [7] and the Blu-ray Disc Association was founded by a consortium of nine electronics companies. The DVD Forum, chaired by Toshiba , was deeply split over whether to go with the more expensive blue lasers, whose discs initially required a protective caddy to avoid mishandling, making the medium more expensive and physically different from DVDs. Department of Justice to make preliminary investigations. The competing standards had significant differences that made each incompatible with the other. In an attempt to avoid a costly format war, the Blu-ray Disc Association and DVD Forum started to negotiate a compromise in early

Retrieved June 11,

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file. File Talk. Read View on Commons. Tools Tools. This is a file from the Wikimedia Commons. Information from its description page there is shown below.

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. How we test TVs. Ultra HD 4K Blu-ray discs deliver the best home video picture quality you can buy. Here's what you need to know. Even better, many discs have high dynamic range HDR and wide color gamut WCG content, which provide a much more noticeable improvement than 4K resolution, provided your TV can deliver it. I hear you. But for people who want peak image quality, a disc is still the way to go. And for new and current movies, it's often cheaper than you'll pay for streaming. The industry has learned from its past mistakes, at least a little.

4k blu ray wikipedia

In contrast, standard HDR10 only makes use of static metadata, which sets the same brightness and tone mapping for the entirety of the content. The case size is the same as that of a normal Blu-ray disc. This also means that each revolution of such a disc transfers more data than that of a standard Blu-ray Disc, which means the transfer rate is higher with the same linear velocity. In addition, the disc can be encoded to have the drive hold the full 5, rpm until it reaches a point slightly away from the innermost part of the disc if an even higher transfer rate is needed.

Brandi passante sexy

This is a file from the Wikimedia Commons. However, personal computers with Blu-ray recorder drives were available. HD Guru. EE Times. Archived from the original on August 15, June November 18, Retrieved July 20, Retrieved 12 March Retrieved September 1, Shortly after the "format war" ended, Blu-ray Disc sales began to increase. Retrieved April 13, Archived from the original on March 3, High-definition television High-definition video Ultra-high-definition television.

It took a few years to gain momentum, but 4K Ultra HD Blu-ray is now a firm fixture of virtually all major film releases. The first 4K TVs went on sale back in , but it wasn't until that the first 4K Blu-ray players from Samsung and Panasonic went on sale - alongside, thankfully, an increasing number of 4K Blu-ray discs.

Retrieved 30 May Retrieved September 13, February 21, Retrieved August 24, Archived from the original PDF on August 16, Retrieved 24 January Archived from the original on December 11, Retrieved 16 January Home Media Magazine. The usable data rate of a Blu-ray Disc drive can be limited by the capacity of the drive's data interface.