From Wikipedia, the free encyclopedia
  (Redirected from 1.78:1)
Jump to: navigation, search
A 16:9 rectangle in which rectangles visualize the ratio. Note that the groupings are not square.
An LCD television set with a 16:9 image ratio.

16:9 (1.77:1) (16:9 = 42:32) is an aspect ratio with a width of 16 units and height of 9. Since 2010 it has become the most common aspect ratio for televisions and computer monitors, and is also the international standard format of HDTV, Full HD, non-HD digital television and analog widescreen television. This has replaced the old 4:3 aspect ratio.


An equal-area comparison of the aspect ratios which Dr. Kerns Powers employed to derive the SMPTE 16:9 standard.[1]
  TV 4:3/1.33,
  Panavision 11:5/2.2 and

Dr. Kerns H. Powers, a member of the SMPTE Working Group on High-Definition Electronic Production, first proposed the 16:9 (1.77:1) aspect ratio at a time[when?] when nobody was creating 16:9 videos. The popular choices in 1980 were: 1.33:1 (based on television standard's ratio at the time), 1.66:1 (the European "flat" ratio), 1.85:1 (the American "flat" ratio), 2.20:1 (the ratio of 70 mm films and Panavision) and 2.39:1 (the CinemaScope ratio for anamorphic widescreen films).

Powers cut out rectangles with equal areas, shaped to match each of the popular aspect ratios. When overlapped with their center points aligned, he found that all of those aspect ratio rectangles fit within an outer rectangle with an aspect ratio of 1.77:1 and all of them also covered a smaller common inner rectangle with the same aspect ratio 1.77:1.[1] The value found by Powers is exactly the geometric mean of the extreme aspect ratios, 4:3 (1.33:1) and 2.35:1 (or 64:27, see also 21:9 aspect ratio for more information), 47/15 ≈ 1.770 which is coincidentally close to 16:9 (1.77:1). Applying the same geometric mean technique to 16:9 and 4:3 yields the 14:9 aspect ratio, which is likewise used as a compromise between these ratios.[2]

While 16:9 (1.77:1) was initially selected as a compromise format, the subsequent popularity of HDTV broadcast has solidified 16:9 as perhaps the most important video aspect ratio in use.[citation needed] Most 4:3 (1.33:1) and 2.39:1 video is now recorded using a "shoot and protect" technique[3] that keeps the main action within a 16:9 (1.77:1) inner rectangle to facilitate HD broadcast[citation needed]. Conversely it is quite common to use a technique known as center-cutting, to approach the challenge of presenting material shot (typically 16:9) to both a HD and legacy 4:3 audience simultaneously without having to compromise image size for either audience. Content creators frame critical content or graphics to fit within the 1.33 raster space.[citation needed] This has similarities to a filming technique called Open matte.

After the original 16:9 Action Plan of the early 1990s, the European Union has instituted the 16:9 Action Plan,[4] just to accelerate the development of the advanced television services in 16:9 aspect ratio, both in PAL and also in HDTV. The Community fund for the 16:9 Action Plan amounted to 228 million.

In 2008 the computer industry started switching to 16:9 as the standard aspect ratio for monitors and laptops. A 2008 report by DisplaySearch cited a number of reasons for this shift, including the ability for PC and monitor manufacturers to expand their product ranges by offering products with wider screens and higher resolutions, helping consumers to more easily adopt such products and "stimulating the growth of the notebook PC and LCD monitor market".[5]

In 2011 Bennie Budler, product manager of IT products at Samsung South Africa, confirmed that monitors capable of 1920×1200 resolutions aren't being manufactured anymore. "It is all about reducing manufacturing costs. The new 16:9 aspect ratio panels are more cost-effective to manufacture locally than the previous 16:10 panels".[6] Since computer displays are advertised by their diagonal measure, for monitors with the same display area, a wide screen monitor will have a larger diagonal measure, thus sounding more impressive. Within limits, the amount of information that can be displayed, and the cost of the monitor depend more on area than on diagonal measure.

In March 2011 the 16:9 resolution 1920×1080 became the most common used resolution among Steam's users. The earlier most common resolution was 1680×1050 (16:10).[7]


16:9 is the only widescreen aspect ratio natively supported by the DVD format. Anamorphic DVD transfers store the information as 5:4 (PAL) or 3:2 (NTSC) square pixels, which is set to expand to either 16:9 or 4:3, which the television or video player handles. For example, a PAL DVD with a full frame image may contain a video resolution of 720×576 (5:4 ratio), but a video player software will stretch this to 1024×576 square pixels with a 16:9 flag in order to recreate the correct aspect ratio.

DVD producers can also choose to show even wider ratios such as 1.85:1 and 2.39:1[a] within the 16:9 DVD frame by hard matting or adding black bars within the image itself. Some films which were made in a 1.85:1 aspect ratio, such as the U.S.-Italian co-production Man of La Mancha and Kenneth Branagh's Much Ado About Nothing, fit quite comfortably onto a 1.77:1 HDTV screen and have been issued anamorphically enhanced on DVD without the black bars. Many digital video cameras have the capability to record in 16:9.

Super 16 mm film is frequently used for television production due to its lower cost, lack of need for soundtrack space on the film itself, and aspect ratio similar to 16:9.[citation needed]

Common resolutions[edit]

Common resolutions for 16:9 are listed in the table below:

Width Height Standard
640 360 nHD
768 432
800 450
896 504
960 540 qHD
1024 576
1152 648
1280 720 HD
1366 768 WXGA
1600 900 HD+
1920 1080 Full HD
2000 1125
2048 1152
2304 1296
2560 1440 QHD
2880 1620
3200 1800 QHD+
3520 1980
3840 2160 4K UHD
4096 2304 Full 4K UHD
4480 2520
5120 2880 5K UHD
5760 3240
6400 3600
7040 3960
7680 4320 8K UHD

In Europe[edit]

In Europe, 16:9 is the standard broadcast format for most digital channels and all HDTV broadcasts. Some countries adopted the format for analog television, first by using the PALplus standard (now obsolete) and then by simply using WSS signals on normal PAL broadcasts.

Country Channel
 Albania All Channels
 Andorra Andorra Televisió.
 Armenia All Channels
 Austria All Channels:
 Azerbaijan All Channels
 Belarus All Channels (except BTRC channels)
 Belgium All channels.
 Bosnia and Herzegovina All Channels
 Bulgaria All channels.
 Cyprus All Channels
 Croatia HRT 1**, 2**, 3**, 4**, 5, RTL Televizija*, RTL 2*, Nova TV*, Doma TV*, RTL Kockica* Sportska televizija**.

Older programmes filmed in 4:3 are:
**transmitted in their original format.

 Czech Republic All Channels.
 Denmark All Channels.
 Estonia All Channels.
 Finland All Channels.
 France All DVB-T (TNT)
And almost all pay channels via TNT, ADSL, DVB-C and DVB-S;
Canal+ Décalé, Canal+ Family, Poker Channel, CinePlay, Ciné Cinéma Premier, OL TV, Motors TV, Disney Cinemagic, Disney Cinemagic + 1, NRJ Hits, Ciné Cinéma Premier HD and SD, National Geographic HD and SD, Ushuaia TV HD and SD, Disney Cinemagic HD and SD, MTV HD, NRJ 12 HD and SD, iConcert HD, HD1, Melody Zen HD, Sci Fi Channel HD and SD, 13ème Rue HD and SD, Orange cinemax HD etc.
 Germany All channels.
 Georgia GPB (1TV, 2TV), Marao TV, Imedi Media Holding (Imedi TV, Maestro TV, GDS TV), Voice of Abkhazia, Ajara TV, Kavkasia TV, Tabula TV, Pirveli TV, Aratrea TV.
 Greece All Channels.
 Hungary All channels (except Cartoon Network, Boomerang)
 Iceland All three national stations broadcast in 16:9 with occasional 4:3 programmes. Local stations still use 4:3.
 Ireland RTÉ channels, TV3, TG4, and Eir Sport.
 Italy All Channels.
 Kazakhstan All channels.
 Latvia Always on 16:9: Latvijas Televīzija (LTV1, LTV7), Re:TV, TV24, SportaCentrs.tv, TV XXI.

Often on 16:9: Providence Equity Partnes channels (TV3, LNT, TV6 and others).

 Lithuania Always on 16:9: LRT channels (LRT televizija, LRT Kultūra, LRT Lituanica), Sport1 (Lithuania), Lietuvos rytas TV, Balticum TV, Balticum Auksinis.

Often on 16:9: LNK channels (LNK, BTV, TV1, Info TV), TV3 channels (TV3 Lithuania, TV6, TV8, Viasat Sport Baltic, TV1000 Premium).
Always on 4:3: Liuks!.

 Luxembourg RTL Télé Lëtzebuerg, Luxe.tv.
 Macedonia All Channels
 Malta All nationwide channels.
 Moldova TRM (Moldova 1, Moldova 2), GMG Group (Prime, Canal 2, Canal 3, Publika TV), ProTV Chishinau, N4, Jurnal TV, TV8
 Monaco Télé Monte Carlo & Monaco Info.
 Montenegro All Channels
 Netherlands All Channels
 Norway 16:9 is the national standard for television – almost all channels conform to this format.
 Poland All Channels
 Portugal All Channels.
 Romania All Channels
 Russia All channels
 San Marino San Marino RTV
 Serbia All Channels.
 Slovakia All nationwide channels (RTVS, CME Slovakia, J&T, TA3 and others).
 Slovenia All Channels.
 Spain All Channels
 Sweden All Channels.
  Switzerland All Channels.
 Turkey All Channels.
 Ukraine UA:PBC (UA:First, UA:Kultura, regional television network (Zhytomyr, Karpaty, UA:Krym, DoTB-LOT)), 1+1 Media Group (all channels), Inter Media Group (all channels), StarLightMedia (except Novyi Kanal), Media Group Ukraine (except Eskulap TV), 5 kanal, Channel 24, ZIK, 112 Ukraine, Espreso TV, Pryamiy, News One, NewsNetwork, Pershiy Diloviy, ATR Group (ATR, Lale), XSPORT, Black Sea TV, Poverkhnost TV (Sport 1, Sport 2), Music Box Ukraine, EU Music, Niki Kids, Niki Junior, Trofey TV, Dacha TV, HDFashion, RTI, PravdaTut, Oboz TV, UATV, English Club TV.
 United Kingdom In 1998, with the introduction of digital television, digital versions of BBC One, BBC Two, ITV and Channel 4 were created. An On Digital set top box or a subscription to Sky Digital was required to view the digital versions.

On 1 July 2000, "C-Day", most of the UK broadcast industry began requiring commercials to be delivered in 16:9 full-height format (with a 14:9 safe area for those channels still broadcasting in 4:3). ITV and C4 upgraded their continuity suites to be 16:9 capable at the same time, allowing idents to be broadcast in widescreen format on digital.
In 2001, the UK's fourth broadcaster Channel 5 switched to 16:9.
In 2002, On Digital became defunct and free-to-air digital terrestrial television services instead began to operate under the name of Freeview.
In 2003, Sky branded channels were re-branded which included the switch to 16:9.
In 2006, BBC HD began broadcasting in 1080i which became the standard for all HD channels. Similar to the switch to Digital in 1998, viewers using terrestrial services required an additional set-top-box which was HD capable
In 2007, Channel 4 HD was launched on Sky. It was later added to Virgin Media in 2009 and then to Freeview HD in 2011.
In 2008, ITV HD was launched on Freesat and was later added to Virgin Media, Sky and Freeview HD in 2010.
In 2009, Freeview HD launched allowing terrestrial viewers to watch BBC HD and ITV HD without a subscription, a Freeview HD set-top box or television is required.
In 2010, Channel 5 HD was launched on Sky and Virgin Media.
In 2011, BBC One HD was launched on Sky, Virgin Media and Freeview HD. As of 2012,
All Freeview channels broadcast in 16:9;
Almost all Virgin Media/Sky channels broadcast in 16:9. The rest switched by the end of 2012. Older 4:3 programmes are either shown in their original format or zoomed to 14:9 or 16:9.

In Oceania[edit]

Country Channel
 Australia All major free to air channels and almost all pay TV channels (including SD). Older 4:3 programmes are either shown in their original format or zoomed to 14:9 or 16:9.
 Fiji All channels.
 New Zealand All channels.

In Asia[edit]

Japan's Hi-Vision originally started with a 5:3 ratio but converted when the international standards group introduced a wider ratio of 5​13 to 3 (=16:9).

Country Channel
 Afghanistan All channels.
 Bangladesh SA TV.
 Cambodia All channels.
 China CCTV channels 1-15, CCTV-5+, CCTV News. Older contents in 4:3 and news contents are stretched on SD variants of these channels as stretching on SD channels is common.
 Hong Kong All major channels since digital television broadcasting started in 2007.
 India All channels.
 Indonesia 16:9 native*: Kompas TV, BeritaSatu TV**, CNN Indonesia***, MetroTV

16:9 with inner 4:3****: NET., Trans TV, Trans7

Often on 4:3*****: RCTI, SCTV, MNCTV, Indosiar, GTV

Always on 4:3******: TVRI, antv, tvOne, iNews, rtv

*Channels that are primarily broadcast in 16:9 sometimes are filled by 4:3 content which are either stretched or pillarboxed.

**Only on digital cable/satellite.

***Only on digital cable/satellite. When broadcasting on Trans TV (and sometimes on Trans7 as well), this channel follows broadcast configuration of Trans TV.

****Channels in this category broadcast in 16:9 HDTV along with inner 4:3 SDTV at the same time by default. Due to their visibility, some contents are either pillarboxed and windowboxed (especially in commercial ads). Contents wider than 16:9 are usually letterboxed.

*****Channels in this category are still using 4:3 configuration as default, but having 16:9 configuration for several programs via internet streaming. When broadcasting on recent TV devices or internet in 16:9 format in default mode, they are stretched.

******These channels are still using 4:3 configuration. When broadcasting on recent TV devices or internet in 16:9 format, all SD channels (or SD mode of HD channel) are stretched.

Note: Nationwide TV channels listed above are classified according to their original configuration. Configuration for exclusively digital and local channels are may vary. Local version of nationwide channels are may different to their national version.

 Iran All channels.
 Israel All main channels, including but not limited to Hot&Yes.
 Japan Japan pioneered in its analogue HDTV system (MUSE) in 16:9 format, started in the 1980s. Currently all main channels have digital terrestrial television channels in 16:9 while being simulcast in analogue 4:3 format. Many satellite broadcast channels are being broadcast in 16:9 as well.
 Kyrgyzstan All channels.
 Lebanon LBCI.4:3 Shows are stretched

National Broadcasting Network (Lebanon). Its in HD and has no 4:3 content Future Television.

 Malaysia All channels.
 Mongolia MNB & MN2, TM Television, TV5, TV6[disambiguation needed], TV8, Channel 25, Эx Орон, SBN, ETV, MNC, Eagle News TV, Edutainment TV, Star TV, SPS, Sportbox and SHUUD TV.
 Myanmar All channels.
 Pakistan All channels.
 Philippines 16:9 native*: CNN Philippines, Hope Channel Philippines, 3ABN, Hope International, INCTV, Net 25

4:3 upscaled/stretched to 16:9**: ETC, 2nd Avenue, GMA Network, GMA News TV, all BEAM's subchannels, Light Network, UNTV, Ang Dating Daan TV, SMNI, all ABS-CBN channels (including TVPlus channels), TV5, AksyonTV

*channels that are letterboxed on analog terrestrial transmissions nor no letterbox on widescreen-produced programs.

**channels that are originally broadcasting in 4:3 on analog terrestrial, but upscaled or stretched to 16:9 for digital terrestrial television, cable and satellite.

 Qatar All Al Jazeera Sports channels, Al Jazeera, Al Jazeera English, Qatar TV HD, all Alkass channels.
 Saudi Arabia All channels.
 Singapore All MediaCorp channels, however 16:9 contents look squashed on older 4:3 sets. Also, all 4:3 contents including news clips are stretched as stretching is common.
 South Korea All major channels currently feature 16:9 aspect ratio.
 Sri Lanka Colombo TV.
 Syria All channels.
 Thailand All channels.
 United Arab Emirates All channels.
 Vietnam All of VTC HD's channels, VTV channels, HTV channels and K+'s channels (selected programmes).

In the Americas[edit]

Country Channel
 Argentina All channels.
 Bolivia Always on 16:9: PAT, ATB.
Often on 16:9: Bolivia TV.
 Brazil Rede Bandeirantes, Rede Globo, Rede Record, Rede Gazeta, Rede TV!, SBT, FOX Sports, ESPN, ESPN Brasil, ESPN+, Telecine Premium, Telecine Action, Telecine Touch, Telecine Pipoca, Telecine Fun, Telecine Cult, Multishow, GNT, HBO, HBO HD, MAX HD, Gloob, Arte1, Megapix Sky Esportes, Canal Off, BIS, Canal Sony, History Channel, TBS, AXN, +Globosat, Warner Channel, Discovery Channel etc.
 Canada Almost all main channels.
 Chile Canal 13HD, Chilevisión HD, TVN HD, MEGA HD.
 Colombia All channels, except Citytv
 Costa Rica All channels.
 Mexico Free Television: Las Estrellas, FOROtv, Canal 5, Gala TV, Azteca 7, Azteca Trece, adn40, Canal Once, Canal 22, Una Voz con Todos, Teveunam, Imagen Televisión, Excélsior TV, Televisa Regional, Multimedios Televisión, Milenio Televisión, Teleritmo, and some local stations broadcast HD signal.

Pay Television: Bandamax, De Película, De Película Clásico, Ritmoson Latino, TDN, TeleHit, Unicable, Distrito Comedia, Golden, Golden Edge, TL Novelas, Tiin.

 Peru All channels.
 United States Almost all channels.

In Africa[edit]

Country Channel
 Libya Libya 24.
 Morocco Al Aoula.
 South Africa 16:9 is the standard broadcast format for most digital channels and all HDTV broadcasts all main channels.
 Tunisia All channels.

See also[edit]


  1. ^ The 2.39:1 ratio is commonly labeled 2.40:1, e.g., in the American Society of Cinematographers' American Cinematographer Manual, and is mistakenly referred to as 2.35:1 (only cinema films before the 1970 SMPTE revision used 2.35:1).



  1. ^ a b "Understanding Aspect Ratios" (Technical bulletin). The CinemaSource Press. 2001. Retrieved 2009-10-24. 
  2. ^ US 5956091, "Method of showing 16:9 pictures on 4:3 displays", issued 1999-09-21 
  3. ^ Baker, I (1999-08-25). "Safe areas for widescreen transmission" (PDF). EBU. CH: BBC. Retrieved 2009-10-27. 
  4. ^ "Television in the 16:9 screen format" (legislation summary). EU: Europa. Retrieved 2011-09-08. 
  5. ^ "Product Planners and Marketers Must Act Before 16:9 Panels Replace Mainstream 16:10 Notebook PC and Monitor LCD Panels, New DisplaySearch Topical Report Advises". DisplaySearch. 2008-07-01. Retrieved 2011-09-08. 
  6. ^ "Widescreen monitors: Where did 1920×1200 go? « Hardware « MyBroadband Tech and IT News". Mybroadband.co.za. 2011-01-10. Retrieved 2011-09-08. 
  7. ^ "Steam Hardware & Software Survey". Steam. Retrieved 2011-09-08.