Archive:Ultra Widescreen (21:9 aspect ratio) skins for Kodi: Difference between revisions

From Official Kodi Wiki
Jump to navigation Jump to search
No edit summary
No edit summary
 
(38 intermediate revisions by 3 users not shown)
Line 1: Line 1:
{{mininav|[[Development]]|[[Add-on development]]|[[Skinning]]|[[Skins]]}}


Kodi skinning engine can handle skins using resolution with 21:9 (2.33:1) aspect ratio display output, an aspect ratio that is also known in cinema / movie theater terminology as CinemaScope (2.35:1), Panavision, Ultra Widescreen, Anamorphic Widescreen (2.39:1), CIH (Constant Image Height), Constant Height Projection, and CINEMA 21:9 or simply 2.35 resolution, also incorrect described (rounded) as 2.40:1 for Blu-ray Disc film releases (1920×800 resolution).
{{incomplete}}


This aspect ratio is designed to show films recorded in CinemaScope or the modern anamorphic format of 2.39:1, and a anamorphic vertical stretch 21:9 television or projector which allows for displaying all content at equal height, allowing for a more balanced viewing experience. The main benefit of this screen ratio is the absence of the black bars at the top and bottom of the screen when viewing content in this format, and a constant display height when displaying other content with a lesser aspect ratio.
<section begin="intro" />Kodi's skinning engine (GUI layout engine) can handle CIH (Constant Image Height) skins using resolutions with 21:9 (2.33:1) aspect ratio display output for CHP (Constant Height Projection) / CHD (Constant Height Display) formats. Displays supporting this type of input are today marketed as "Ultra Widescreen" displays when referring to commercial televisions, monitors, or projector designed for home theater purposes. These displays can sometimes also be refereed to as Cinema Widescreen, Cinema Display, Cinema 21:9, or 21.9 Display in marketing material.
 
Movies and other videos encoded for these "Ultra Widescreen" displays with 21:9 (2.33:1) and similar aspect ratios are commonly known in cinema/movie-theater and motion picture terminology as CinemaScope (2.35:1 / 2.35 Scope), Panavision, Cinerama, Technirama, Anamorphic Widescreen (2.39:1), or simply 2.39 aspect ratio videos, and they can sometimes also be incorrect described (rounded) as 2.40:1 or 2.40 movies, like for some Blu-ray Disc film releases which have 1920×800 resolution.
 
Skins supporting these aspect ratios CIH for CHP/CID output from Kodi is designed to show films/movies recorded in CinemaScope (2.35:1 / 2.35 Scope) or a anamorphic format of 2.39:1 which is used in modern cinemas today, and a anamorphic vertical stretch 21:9 television or projector which allows for displaying all content at equal height, allowing for a more balanced viewing experience. The main benefit of this screen ratio is the absence of the black bars at the top and bottom of the screen when viewing content in this format, and a constant display height when displaying other content with a lesser aspect ratio.<section end="intro" /><ref>http://www.highdefdigest.com/news/show/Joshua_Zyber/HD_Advisor/HD_Advisor_Tutorial__2351_Constant_Height_Projection/2798 HD Advisor Tutorial – 2.35:1 Constant Height Projection</ref><ref>http://www.projectorcentral.com/235_home_theater.htm 2.35 Widescreen Home Theater: Should you or shouldn't you?</ref><ref>http://www.zuggsoft.com/theater/prism.htm DIY Anamorphic Lens</ref>


__TOC__
__TOC__
==Overview==
==Overview==
The 64:27 aspect ratio is the logical extension of the existing video aspect ratios 4:3 and 16:9, as it is the third power of 4:3, where 16:9 of traditional HDTV is 4:3 squared. This allows electronic scalers to use an easily implementable 4:3 (1.33:1) scaling factor.  
The 64:27 aspect ratio is the logical extension of the existing video aspect ratios 4:3 and 16:9, as it is the third power of 4:3, where 16:9 of traditional HDTV is 4:3 squared. This allows electronic scalers to use an easily implementable 4:3 (1.33:1) scaling factor. 21:9 (2.33:1) is the approximated screen aspect ratio of the true value 64:27 (2.370:1) in comparison to the common ratio of 16:9 (1.77:1).
 
21:9 (2.33:1) is the approximated screen aspect ratio of the true value 64:27 (2.370:1) in comparison to the common ratio of 16:9 (1.77:1).


The term "21:9" was chosen as a marketing term, probably first used by Philips. Due to its common denominator, 21:9 is more relatable to 16:9, the aspect ratio of regular HDTVs, rather than the correct 64:27 or 21\tfrac{1}{3}:9. If it actually were 21:9, the fraction could be expressed more elegantly in the reduced form as 7:3.
====Film formats and 21:9====
 
==Film formats and 21:9==
 
==Film formats and 21:9==
{| class="wikitable"
{| class="wikitable"
|-
|-
! Format !! Aspect ratio
! Format !! Aspect ratio
|-
|-
| Cinemascope (1950s–1970s) || 2.35:1
| Cinemascope by Panavision (1950s–1970s) || 2.35:1
|-
|-
| "21:9" (64:27) || 2.37:1
| "21:9" (64:27) / "Ultra Widescreen" televisions || 2.37:1
|-
|-
| Anamorphic, modern cinema widescreen format || 2.39:1
| Anamorphic, modern cinema widescreen format || 2.39:1
|}
|}
The term "21:9" was chosen as a marketing term, probably first used by Philips. Due to its common denominator, 21:9 sounds more similar to 16:9, the aspect ratio of regular HDTVs, rather than the correct 64:27 or 21\tfrac{1}{3}:9. If it actually were 21:9, the fraction could be expressed more elegantly in the reduced form as 7:3.
==== Examples ====
This first image is an example of a native CinemaScope (2.35:1) video shown in Kodi using an 21:9 aspect ratio skin when displayed on a Ultra Widescreen screen with CIH (Constant Image Height). Skins can of course take many forms, this is just an example.
[[File:CIH - Kung Fu Panda in 2.40 aspect ratio.jpg|570px]]
This second image is an example of a native Widescreen (16.9) video shown in Kodi using an 21:9 aspect ratio skin when displayed on a Ultra Widescreen screen with CIH (Constant Image Height). Again, the skins can of course take many forms, this is just an example.
[[File:CIH - The Witcher 3 Gameplay Video in 16.9.jpg|570px]]
==Resolution and Aspect Ratio==


=== HDMI output standardization===
=== HDMI output standardization===
As of May 2013, video timings in this 64:27 aspect ratio are supported by the technical specification that defines video timings for the [[HDMI]] interface, CEA 861-F:<ref>[http://ce.org/Standards/Standard-Listings/R4-8-DTV-Interface-Subcommittee/CEA-861-E.aspx CEA-861-F]</ref>
As of May 2013, video timings in this 64:27 aspect ratio are supported by the technical specification that defines video timings for the HDMI interface, CEA 861-F:<ref>[http://ce.org/Standards/Standard-Listings/R4-8-DTV-Interface-Subcommittee/CEA-861-E.aspx CEA-861-F]</ref>
* 1280×720p, anamorphic widescreen pixel aspect ratio of 4:3
* 1280×720p, anamorphic widescreen pixel aspect ratio of 4:3
* 1680×720p, near-square pixel aspect ratio of 64:27
* 1680×720p, near-square pixel aspect ratio of 64:27
Line 39: Line 49:
An additional resolution of 5120×2160p ("5K") could be added at a later time to provide a non-anamorphic UltraHD signal in 21:9. Variations of the 8K UltraHD resultions could also be considered, at 7680×4320p anamorphic and 10240x4320p non-anamorphic.
An additional resolution of 5120×2160p ("5K") could be added at a later time to provide a non-anamorphic UltraHD signal in 21:9. Variations of the 8K UltraHD resultions could also be considered, at 7680×4320p anamorphic and 10240x4320p non-anamorphic.


==Kodi skins==
===Resolution and Aspect Ratio Explained===
* [http://forum.kodi.tv/showthread.php?tid=224427 Aeon Nox 21:9]
Videos by the ProjectorPeople.com and Filmmaker IQ which does a good job at explaining resolution and aspect ratio, and maybe more importantly, why we today can buy displays/screens/projectors with different aspect ratios:
* [http://forum.kodi.tv/showthread.php?tid=188070 Alaska 21:9]
 
{{youtube|npbsI8-nD-4}} {{youtube|3CgrMsjGk7k}}
 
==Kodi skins supporting 21:9 aspect ratio==
 
====Aeon Nox 21:9====
* http://forum.kodi.tv/showthread.php?tid=224427
* http://forum.kodi.tv/showthread.php?tid=208867
 
[[File:Aeon Nox 21-9 image 1.jpg|570px]]
 
===Alaska 21:9===
* http://forum.kodi.tv/showthread.php?tid=188070
 
[[File:Alaska 21-9 image 1.png|570px]]
 
===ScopeNox 21:9===
* http://forum.kodi.tv/showthread.php?tid=210806
 
[[File:ScopeNox 21.9 skin video view 1.png|570px]]
 
===WIP and POC skins for 21:9 aspect ratios:===
 
====ScopeConfluence====
"ScopeConfluence" is a work-in-progress 21:9 aspect ratio skin by Funkd, done as a forked Scope (CinemaScope) version of the [[Add-on:Confluence|Confluence]] skin.
* https://github.com/Funkd/ScopeConfluence
** http://forum.kodi.tv/showthread.php?tid=210806&page=3
 
====Numax - pure.cinema====
"Numax - pure.cinema" is a not yet released proof-of-concept 2:35.1 CIH format skin by [http://doghousecinema.com/ DoghouseCinema]
 
{{youtube|iIBH-diq4SE}}|


==References==
==References==
{{reflist}}
<references />
 
 
* http://en.wikipedia.org/wiki/Letterboxing_%28filming%29
* http://en.wikipedia.org/wiki/List_of_film_formats
**http://en.wikipedia.org/wiki/List_of_anamorphic_format_trade_names
* http://www.widescreen.org/aspect_ratios.shtml
* http://en.wikipedia.org/wiki/21:9_aspect_ratio
* http://en.wikipedia.org/wiki/21:9_aspect_ratio
* http://en.wikipedia.org/wiki/Anamorphic_widescreen
* http://en.wikipedia.org/wiki/Anamorphic_widescreen
Line 51: Line 98:
* http://en.wikipedia.org/wiki/Panavision
* http://en.wikipedia.org/wiki/Panavision


== See also ==
 
'''Development:'''
* [[Add-on development]]
* [[Skinning]]


==External Links==
==External Links==
Line 60: Line 104:
** http://forum.kodi.tv/showthread.php?tid=142266
** http://forum.kodi.tv/showthread.php?tid=142266
** http://forum.kodi.tv/showthread.php?tid=222882
** http://forum.kodi.tv/showthread.php?tid=222882
** http://forum.kodi.tv/showthread.php?tid=208867
** http://forum.kodi.tv/showthread.php?tid=210998
** http://forum.kodi.tv/showthread.php?tid=210998
** http://forum.kodi.tv/showthread.php?tid=171173
* [http://hdguru.com/understanding-hdtv-aspect-ratio/4161/ Understanding HDTV Aspect Ratio]
* [http://www.highdefdigest.com/news/show/Joshua_Zyber/HD_Advisor/HD_Advisor_Tutorial__2351_Constant_Height_Projection/2798 HD Advisor Tutorial – 2.35:1 Constant Height Projection]
* [http://www.highdefdigest.com/news/show/Joshua_Zyber/HD_Advisor/HD_Advisor_Tutorial__2351_Constant_Height_Projection/2798 HD Advisor Tutorial – 2.35:1 Constant Height Projection]
* [http://www.zuggsoft.com/theater/prism.htm DIY Anamorphic / Panamorphic Projector Lens]
* [http://www.zuggsoft.com/theater/prism.htm DIY Anamorphic / Panamorphic Projector Lens]


[[Category:General topics]]
 
[[Category:Skins|*]]
 
[[Category:Manual]]
[[Category:Skins-Archived]]
[[Category:Development]]
[[Category:Skin development]]
[[Category:Add-on development|*]]

Latest revision as of 06:31, 15 July 2020

Incomplete.png INCOMPLETE:
This page or section is incomplete. Please add information or correct uncertain data which is marked with a ?

Kodi's skinning engine (GUI layout engine) can handle CIH (Constant Image Height) skins using resolutions with 21:9 (2.33:1) aspect ratio display output for CHP (Constant Height Projection) / CHD (Constant Height Display) formats. Displays supporting this type of input are today marketed as "Ultra Widescreen" displays when referring to commercial televisions, monitors, or projector designed for home theater purposes. These displays can sometimes also be refereed to as Cinema Widescreen, Cinema Display, Cinema 21:9, or 21.9 Display in marketing material.

Movies and other videos encoded for these "Ultra Widescreen" displays with 21:9 (2.33:1) and similar aspect ratios are commonly known in cinema/movie-theater and motion picture terminology as CinemaScope (2.35:1 / 2.35 Scope), Panavision, Cinerama, Technirama, Anamorphic Widescreen (2.39:1), or simply 2.39 aspect ratio videos, and they can sometimes also be incorrect described (rounded) as 2.40:1 or 2.40 movies, like for some Blu-ray Disc film releases which have 1920×800 resolution.

Skins supporting these aspect ratios CIH for CHP/CID output from Kodi is designed to show films/movies recorded in CinemaScope (2.35:1 / 2.35 Scope) or a anamorphic format of 2.39:1 which is used in modern cinemas today, and a anamorphic vertical stretch 21:9 television or projector which allows for displaying all content at equal height, allowing for a more balanced viewing experience. The main benefit of this screen ratio is the absence of the black bars at the top and bottom of the screen when viewing content in this format, and a constant display height when displaying other content with a lesser aspect ratio.[1][2][3]

Overview

The 64:27 aspect ratio is the logical extension of the existing video aspect ratios 4:3 and 16:9, as it is the third power of 4:3, where 16:9 of traditional HDTV is 4:3 squared. This allows electronic scalers to use an easily implementable 4:3 (1.33:1) scaling factor. 21:9 (2.33:1) is the approximated screen aspect ratio of the true value 64:27 (2.370:1) in comparison to the common ratio of 16:9 (1.77:1).

Film formats and 21:9

Format Aspect ratio
Cinemascope by Panavision (1950s–1970s) 2.35:1
"21:9" (64:27) / "Ultra Widescreen" televisions 2.37:1
Anamorphic, modern cinema widescreen format 2.39:1

The term "21:9" was chosen as a marketing term, probably first used by Philips. Due to its common denominator, 21:9 sounds more similar to 16:9, the aspect ratio of regular HDTVs, rather than the correct 64:27 or 21\tfrac{1}{3}:9. If it actually were 21:9, the fraction could be expressed more elegantly in the reduced form as 7:3.

Examples

This first image is an example of a native CinemaScope (2.35:1) video shown in Kodi using an 21:9 aspect ratio skin when displayed on a Ultra Widescreen screen with CIH (Constant Image Height). Skins can of course take many forms, this is just an example.

CIH - Kung Fu Panda in 2.40 aspect ratio.jpg

This second image is an example of a native Widescreen (16.9) video shown in Kodi using an 21:9 aspect ratio skin when displayed on a Ultra Widescreen screen with CIH (Constant Image Height). Again, the skins can of course take many forms, this is just an example.

CIH - The Witcher 3 Gameplay Video in 16.9.jpg

Resolution and Aspect Ratio

HDMI output standardization

As of May 2013, video timings in this 64:27 aspect ratio are supported by the technical specification that defines video timings for the HDMI interface, CEA 861-F:[4]

  • 1280×720p, anamorphic widescreen pixel aspect ratio of 4:3
  • 1680×720p, near-square pixel aspect ratio of 64:27
  • 1920×1080p, anamorphic pixel aspect ratio of 4:3
  • 2560×1080p, square pixel aspect ratio
  • 3840×2160p, anamorphic pixel aspect ratio of 4:3

All of the above timings are supported at frame rates of 23.97/24, 25, 29.97/30, 50 and 59.94/60 Hz, as well as 100 and 119.88/120 Hz for the non-UltraHD timings.

An additional resolution of 5120×2160p ("5K") could be added at a later time to provide a non-anamorphic UltraHD signal in 21:9. Variations of the 8K UltraHD resultions could also be considered, at 7680×4320p anamorphic and 10240x4320p non-anamorphic.

Resolution and Aspect Ratio Explained

Videos by the ProjectorPeople.com and Filmmaker IQ which does a good job at explaining resolution and aspect ratio, and maybe more importantly, why we today can buy displays/screens/projectors with different aspect ratios:

Kodi skins supporting 21:9 aspect ratio

Aeon Nox 21:9

Aeon Nox 21-9 image 1.jpg

Alaska 21:9

Alaska 21-9 image 1.png

ScopeNox 21:9

ScopeNox 21.9 skin video view 1.png

WIP and POC skins for 21:9 aspect ratios:

ScopeConfluence

"ScopeConfluence" is a work-in-progress 21:9 aspect ratio skin by Funkd, done as a forked Scope (CinemaScope) version of the Confluence skin.

Numax - pure.cinema

"Numax - pure.cinema" is a not yet released proof-of-concept 2:35.1 CIH format skin by DoghouseCinema

|

References



External Links