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Look up in Wiktionary, the free dictionary.4K, 4-K or 4k may refer to:. Four (4 × 1024 bytes, better written 4 KiB). 4K size. 4K, a computer art competition using programs limited to 4 kibibytes.

1. 4k Video Er Sourceforge Free

The., a collective term for digital video formats having a horizontal resolution of approximately 4,000 pixels. 4K UHDTV, an format. A temperature of 4 (better written as 4 K). 4K, the IATA airline code for.

4K, an alternative name for ( Four Heads), an Argentine multimedia production company. 4K, model of. 4K, the production code for the 1976 Doctor Who serialSee also.

Contents.4K standards and terminology The term '4K' is generic and refers to any resolution with a horizontal pixel count of approximately 4,000. ( p2) Several different 4K resolutions have been standardized by various organizations.DCI Digital Cinema System Specification In 2005, (DCI), a prominent standards organization in the cinema industry, published the Digital Cinema System Specification. This specification establishes standardized 2K and 4K container formats for digital cinema production, with resolutions of 2048 × 1080 and 4096 × 2160 respectively. ( §4.3.1) The resolution of the video content inside follows the SMPTE 428-1 standard, ( §3.2.1) which establishes the following resolutions for a 4K distribution: ( p6). 4096 × 2160 (full frame, 256∶135 or ≈1.90∶1 aspect ratio).

3996 × 2160 (flat crop, 1.85∶1 aspect ratio). 4096 × 1716 (CinemaScope crop, ≈2.39∶1 aspect ratio)2K distributions can have a frame rate of either 24 or 48, while 4K distributions must have a frame rate of 24 FPS. ( §3.1.4.2)Some articles claim that the terms '2K' and '4K' were coined by DCI and refer exclusively to the 2K and 4K formats defined in the DCI standard. However, usage of these terms in the cinema industry predates the publication of the DCI standard, and they are generally understood as casual terms for any resolution approximately 2000 or 4000 pixels in width, rather than names for specific resolutions. ( p2) ( p109) SMPTE UHDTV Standard In 2007, the published SMPTE ST 2036-1, which defines parameters for two UHDTV systems called UHDTV1 and UHDTV2. The standard defines the following characteristics for these systems:.

A resolution of 3840 × 2160 (UHDTV1) or 7680 × 4320 (UHDTV2) ( §5.2). Square (1∶1) pixels, for an overall image aspect ratio of 16∶9 ( §5.1). A framerate of 23.976, 24, 25, 29.97, 30, 50, 59.94, 60, 100, 119.88, or 120 Hz with progressive scan ( §1.2). RGB, Y′C BC R 4:4:4, 4:2:2, or 4:2:0 pixel encoding ( §7.7). 10 bpc (30 bit/px) or 12 bpc (36 bit/px) color depth ( §1.2). Colorimetry characteristics as defined in the standard, including color primaries, quantization parameters, and the electro-optical transfer function. These are the same characteristics later standardized in.

UHDTV1 systems are permitted to use color primaries up to 60 Hz. ( §6.2)ITU-R UHDTV Standard In 2012, the published, also known as the Ultra High Definition Television (UHDTV) standard. This standard adopts the same image parameters defined in.Although the UHDTV standard does not define any official names for the formats it defines, ITU typically uses the terms '4K', '4K UHD', or '4K UHDTV' to refer to the 3840 × 2160 system in public announcements and press releases ('8K' for the 7680 × 4320 system). In some of ITU's other standards documents, the terms 'UHDTV1' and 'UHDTV2' are used as shorthand.

CEA Ultra HD In October 2012, the (CEA) announced their definition of the term Ultra High-Definition (or Ultra HD) for use with marketing consumer display devices. CEA defines an Ultra HD product as a TV, monitor, or projector with the following characteristics:. A resolution of 3840 × 2160 or larger. An aspect ratio of 1. 77∶1 (16∶9) or wider. Support for color depth of 8 bpc (24 bit/px) or higher.

At least one HDMI input capable of supporting 3840 × 2160 at 24, 30, and 60 Hz progressive scan (though not necessarily with RGB / Y′C BC R 4:4:4 color), and HDCP 2.2. Capable of processing images according to the color space defined in. Capable of upscaling HD content (i.e.

720p / 1080p)The CEA definition does allow manufacturers to use other terms—such as 4K—alongside the Ultra HD logo. ( p9) Since the resolution in CEA's definition is only a minimum requirement, displays with higher resolutions such as 4096 × 2160 or 5120 × 2880 also qualify as 'Ultra HD' displays, provided they meet the other requirements.2160p resolution Some 4K resolutions, like 3840 × 2160, are often casually referred to as 2160p. This name follows from the previous naming convention used by and formats, which refer to a format by the number of pixels/lines along the vertical axis (such as '1080p' for 1920 × 1080 progressive scan, or '480i' for the 480-line interlaced SDTV formats) rather than the horizontal pixel count (≈4000 or '4K' for 3840 × 2160).The term '2160p' could be applied to any format with a height of 2160 pixels, but it is most commonly used in reference to the 4K UHDTV resolution of 3840 × 2160 due to its association with the well-known 720p and 1080p formats.

Although 3840 × 2160 is both a 4K resolution and a 2160p resolution, these terms cannot always be used interchangeably since not all 4K resolutions are 2160 pixels tall, and not all 2160p resolutions are ≈4000 pixels wide. However, some companies have begun using the term '4K' to describe devices with support for a 2160p resolution, even if it is not close to 4000 pixels wide.

For example, many '4K' dash cams only support a resolution of 2880 × 2160 (4∶3); although this is a 2160p resolution, it is not a 4K resolution. Samsung also released a 5120 × 2160 TV, but marketed it as a '4K' TV despite its.

Adoption and the television industry have adopted 3840 × 2160 as their 4K standard. As of 2014, 4K content from major broadcasters remained limited.

On April 11, 2013, Bulb TV created by Canadian serial entrepreneur became the first broadcaster to provide a 4K linear channel and content to cable and satellite companies in North America. The channel is licensed by the to provide educational content.

However, 4K content is becoming more widely available online including on YouTube, Netflix, and Amazon. By 2013, some UHDTV models were available to general consumers in the range of US$600. As of 2015, prices on smaller computer and television panels had dropped below US$400.

DVB In 2014, the Project released a new set of standards intended to guide the implementation of high resolution content in broadcast television. Dubbed DVB-UHDTV, it establishes two standards, known as UHD-1 (for 4K content) and UHD-2 (for 8K content). These standards use resolutions of 3840 × 2160 and 7680 × 4320 respectively, with framerates of up to 60 Hz, color depth up to 10 bpc (30 bit/px), and encoding for transmission. DVB is currently focusing on the implementation of the UHD-1 standard.DVB finalized UHD-1 Phase 2 in 2016, with the introduction of service by broadcasters expected in 2017. UHD-1 Phase 2 adds features such as (using and at 10 or 12 bits), wide color gamut (/ colorimetry), and (up to 120 Hz).

Video streaming , since 2010, and allow a maximum upload resolution of pixels (12.6 megapixels, aspect ratio 4:3). Vimeo's 4K content is currently limited to mostly nature documentaries and tech coverage.(H.265) should allow streaming 4K content with a bandwidth of 20 to 30.In January 2014, launched the first adult video service streaming in 4K. Samsung UN105S9 105-inch (2,700 mm) ultra-high-definition 4K televisionThe first commercially available 4K camera for cinematographic purposes was the, released in 2003. 4K technology was developed by several research groups in universities around the world, such as, and others that realized several demonstrations in venues such as IGrid in 2004. Began supporting 4K for video uploads in 2010 as a result of leading manufacturers producing 4K cameras. Users could view 4K video by selecting 'Original' from the quality settings until December 2013, when the 2160p option appeared in the quality menu.

In November 2013, YouTube began to use the video compression standard, saying that it was more suitable for 4K than (HEVC)., which owns YouTube, developed VP9.Theaters began projecting movies at 4K resolution in 2011. Sony was offering 4K projectors as early as 2004.

The first 4K projector was released by in 2012.Sony is one of the leading studios promoting UHDTV content, as of 2013 offering a little over 70 movie and television titles via digital download to a specialized player that stores and decodes the video. The large files (≈40 GB), distributed through consumer broadband connections, raise concerns about data caps.In 2014, began streaming, and 'some nature documentaries' at 4K to compatible televisions with an HEVC decoder. Most 4K televisions sold in 2013 did not natively support HEVC, with most major manufacturers announcing support in 2014. Began shooting their full-length original series and new pilots with 4K resolution in 2014. They are now currently available though.In March 2016 the first players and discs for —a physical optical disc format supporting 4K resolution and HDR at 60 frames per second—were released.On August 2, 2016 Microsoft released the, which supports 4K streaming and has an Ultra HD Blu-ray disc drive, but does not support 4K gaming.

On November 10, 2016 Sony released the, which supports 4K streaming and gaming, though many games use or are upscaled 4K. On November 7, 2017 Microsoft released the, which supports of 4K streaming and gaming, though not all games are rendered at native 4K. Home video projection. This section may need to be rewritten to comply with Wikipedia's. The may contain suggestions. ( August 2017)Though experiencing rapid price drops beginning in 2013 for viewing devices, the home cinema market saw little expansion, with only a few manufacturers (only Sony as of 2015 ) offering limited 4K-capable lineups, with native 4K projectors commanding five-figure price tags well into 2015 before finally breaking the US$10,000 barrier.

Critics state that at normal direct-view panel size and viewing distances, the extra pixels of 4K are redundant at the ability of. Projection home cinemas, on the other hand, employ much larger screen sizes without necessarily increasing viewing distance to scale. JVC has used a technique known as 'e-shift' to extrapolate extra pixels from 1080p sources to display 4K on screens through or from native 4K sources at a much lower price than native 4K projectors. This technology of non-native 4K entered its fourth generation for 2016. JVC used this same technology to provide for that met the limits of 20/25 visual acuity.Pixel shifting, as described here, was pioneered in the consumer space by, and later in the commercial space. That said, it is not the same thing as 'true' 4K.

More recently, some DLP projectors claim 4K UHD (which the JVCs and Epsons do not claim).As noted above, DCI 4K is 4096 × 2160, while 4K UHD is 3840 × 2160, producing a slight difference in aspect ratio rather than a significant difference in resolution. Traditional displays, such as LCD or OLED, are 3840 pixels across the screen, with each pixel being 1/3840th of the screen width.

They do not overlap—if they did, they would suffer reduced detail. The diameter of each pixel is basically 1/3840th of the screen width or 1/2160th of the screen height - either gives the same size pixel. That 3840 × 2160 works out to 8.3 megapixels, the official resolution of 4K UHD (and therefore Blu-ray UHD discs).The 4K UHD standard does not specify how large the pixels are, so a 4K UHD projector (Optoma, BenQ, Dell, et al.) counts because these projectors have a 2718 × 1528 pixel structure. Those projectors process the true 4K of data and project it with overlapping pixels, which is what pixel shifting is. Unfortunately, each of those pixels is far larger: each one has 50% more area than true 4K. Pixel shifting projectors project a pixel, shift it up to the right, by a half diameter, and project it again, with modified data, but that second pixel overlaps the first.In other words, pixel shifting cannot produce adjacent vertical lines of RGBRGB or other colors where each line is one pixel (1/3840th of the screen) wide.

Adjacent red and green pixels would end up looking like yellow, with a fringe on one side of red, on the other of green - except that the next line of pixels overlaps as well, changing the color of that fringe. 4K UHD or 1080p pixel shifting cannot reveal the fine detail of a true 4K projector such as those Sony ships (business, education and home markets). Also, JVC has one true 4K projector priced at $35,000 (as of mid-2017).So while 4K UHD sounds like it has a pixel structures with 1/4 the area of 1080p, that does not happen with pixel shifting. Only a true 4K projector offers that level of resolution. That's why 'true' 4K projectors cost so much more than 4K UHD projectors with otherwise similar feature sets. They produce smaller pixels, finer resolution, no compromising of detail or color from overlapping pixels. By comparison, the slight difference in aspect ratio between DCI and 3840 × 2160 pixel displays without overlap is insignificant relative to the amount of detail.Broadcasting In November 2014, United States satellite provider became the first pay TV provider to offer access to 4K content, although limited to selected video-on-demand films.

In August 2015, British sports network launched a 4K feed, with its first broadcast being the football match. Two production units were used, producing the traditional broadcast in high-definition, and a separate 4K broadcast. As the network did not want to mix 4K footage with upconverted HD footage, this telecast did not feature traditional studio segments at pre-game or half-time, but those hosted from the stadium by the match commentators using a 4K camera. BT envisioned that if viewers wanted to watch studio analysis, they would switch to the HD broadcast and then back for the game. Footage was compressed using encoders and transmitted to, where it was then transmitted back to BT Sport studios and decompressed for distribution, via 4K-compatible set-top boxes on an eligible internet plan with at least a 25 Mbit/s connection.In late 2015 and January 2016, three Canadian television providers – including -based, Ontario-based, and, announced that they would begin to offer 4K compatible set-top boxes that can stream 4K content to subscribers over gigabit internet service. On October 5, 2015, alongside the announcement of its 4K set-top box and gigabit internet, Canadian media conglomerate announced that it planned to produce 101 sports telecasts in 4K in 2016 via its division, including all home games, and 'marquee' games beginning in January 2016.

Bell Media announced via its division a slate of 4K telecasts to begin on January 20, 2016, including selected games and regional NHL games.On January 14, 2016, in cooperation with BT Sport, Sportsnet broadcast the first ever game produced in 4K – a / game at in,. On January 20, also during a Raptors game, TSN presented the first live 4K telecast produced in North America.

Three days later, Sportsnet presented the first NHL game in 4K.Dome Productions, a joint venture of Bell Media and Rogers Media (the respective owners of TSN and Sportsnet), constructed a 'side-by-side' 4K mobile production unit shared by Sportsnet and TSN's first 4K telecasts; it was designed to operate alongside a separate HD truck and utilize cameras capable of output in both formats. For the opening game of the, Dome constructed 'Trillium' – a production truck integrating both 4K and 1080i high-definition units. Bell Media's also broadcast the in 4K as the first awards show presented in the format.In February 2016, trialed 4K by producing a closed circuit telecast of a football friendly between the national teams of and from in the format. The broadcast was streamed privately to several special viewing locations. Univision aimed to develop a 4K streaming app to publicly televise the final of in 4K. In March 2016, and announced that they would produce the 'Amen Corner' supplemental coverage from the tournament in 4K.After having trialed the technology in limited matches at the, and the (via private tests and public viewings in the host city of ), the was the first in which all matches were produced in 4K. Host Broadcasting Services stated that at least 75% of the broadcast cut on each match would come from 4K cameras (covering the majority of main angles), with instant replays and some camera angles being upconverted from 1080p sources.

These broadcasts were made available from selected rightsholders, such as the in the United Kingdom, and selected television providers in the United States. Resolutions Examples of some 4K resolutions used in displays and mediaFormatResolutionPixels-4096 × 30721. 33∶1 (4∶3)12,582,912-4096 × 25601.60∶1 (16∶10)10,485,760-4096 × 23041. 77∶1 (16∶9)9,437,184(full frame)4096 × 2160≈1.90∶1 (256∶135)8,847,360DCI 4K ( cropped)4096 × 1716≈2.39∶1 (1024∶429)7,020,544DCI 4K ( cropped)3996 × 21601.85∶1 (≈37∶20)8,631,360WQUXGA3840 × 24001.60∶1 (16∶10)9,2 × 21601. 77∶1 (16∶9)8,294,400-3840 × 16002.40∶1 (12∶5)6,144,000-3840 × 10803.

55∶1 (32∶9)4,1 × 2160 The resolution of 3840 × 2160 is the dominant 4K resolution used in the consumer media and display industries. This is the resolution of the UHDTV1 format defined in SMPTE ST 2036-1, as well as the 4K format defined by ITU-R in, and is also the minimum resolution for CEA's definition of Ultra HD displays and projectors. The resolution of 3840 × 2160 was also chosen by the Project for their 4K broadcasting standard, UHD-1.This resolution has an aspect ratio of 16∶9, with 8,294,400 total pixels. It is exactly double the horizontal and vertical resolution of 1080p ( 1920 × 1080) for a total of 4 times as many pixels, and triple the horizontal and vertical resolution of 720p ( 1280 × 720) for a total of 9 times as many pixels.

It is sometimes referred to as '2160p', based on the naming patterns established by the previous 720p and 1080p standards.Televisions capable of displaying UHD resolutions are seen by companies as the next trigger for an upgrade cycle after a lack of consumer interest in. 4096 × 2160 This resolution is used mainly in digital cinema production, and has a total of 8,847,360 pixels with an aspect ratio 256∶135 (≈19∶10). It was standardized as the resolution of the 4K container format defined by in the Digital Cinema System Specification, and is the of all DCI-compliant 4K. The DCI specification allows several different resolutions for the content inside the container, depending on the desired aspect ratio. The allowed resolutions are defined in SMPTE 428-1: ( §3.2.1) ( p. 6).

4096 × 2160 (full frame, 256∶135 or ≈1.90∶1 aspect ratio). 3996 × 2160 (flat crop, 1.85∶1 aspect ratio). 4096 × 1716 (CinemaScope crop, ≈2.39∶1 aspect ratio)The DCI 4K standard has twice the horizontal and vertical resolution of DCI 2K ( 2048 × 1080), with four times as many pixels overall.Digital movies made in 4K may be produced, or stored in a number of other resolutions depending on what is used. In the digital cinema production chain, a resolution of 4096 × 3112 is often used for acquiring 'open gate' or anamorphic input material, a resolution based on the historical resolution of scanned Super 35 mm film. Other 4K resolutions Various other non-standardized 4K resolutions have seen use in displays, including:. 4096 × 2560 (1.60∶1 or ); this resolution was used in the DP-V3010, a 30-inch (76 cm) 4K reference monitor designed for reviewing cinema footage in, released in 2013. 4096 × 2304 (1.

77∶1 or ); this resolution was used in the 21.5-inch (55 cm) LG UltraFine 22MD4KA 4K monitor, jointly announced by and in 2016 and used in the 21.5' 4K computer. 3840 × 2400 (1.60∶1 or 16∶10); this resolution was used in the 22.2-inch (56 cm) monitors, released in 2001 and 2002 respectively. This resolution is also referred to as 'WQUXGA', and is four times the resolution of WUXGA (1920 × 1200). 3840 × 1600 (2.40∶1 or ); a number of computer monitors with this resolution have been produced to date, the first of which was the 37.5-inch (95 cm) LG 38UC99-W released in 2016.

This resolution is equivalent to WQXGA (2560 × 1600) extended in width by 50%, or 3840 × 2160 reduced in height by ≈26%. LG refers to this resolution as 'WQHD+' (Wide Quad HD+), while Acer uses the term 'UW-QHD+' (Ultra-wide Quad HD+) and some media outlets have begun using the term 'UW4K' (Ultra-wide 4K). 3840 × 1080 (3.

55∶1 or 32∶9); this resolution was first used in the Samsung C49HG70, a 49-inch (120 cm) curved gaming monitor released in 2017. This resolution is equivalent to dual 1080p displays (1920 × 1080) side-by-side, but with no border interrupting the image. It is also exactly one half of a 4K UHD (3840 × 2160) display. Samsung refers to this resolution as 'DFHD' (Dual Full HD).Recording.

Sony Handycam FDR-AX1The main advantage of recording video at the 4K standard is that fine spatial detail is resolved well. If the final video quality is reduced to 2K from a 4K recording, more detail is apparent than would have been achieved from a native 2K recording. Increased fineness and is then possible with output to. Some cinematographers record at 4K with the film format to offset any resolution loss that may occur during.With devices there is some available that uses a 4K image sensor.

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4k Video Er Sourceforge Free

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