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Aspect Ratio: Which Should You Choose?
Aspect Ratio: Which Should You Choose?
Published: 2015/09/05
Channel: Now You See It
The Changing Shape of Cinema: The History of Aspect Ratio
The Changing Shape of Cinema: The History of Aspect Ratio
Published: 2013/06/24
Channel: Filmmaker IQ
Aspect Ratios As Fast As Possible
Aspect Ratios As Fast As Possible
Published: 2015/12/20
Channel: Techquickie
What is Aspect Ratio and Which Aspect Ratio is Right for You
What is Aspect Ratio and Which Aspect Ratio is Right for You
Published: 2016/05/02
Channel: wolfcrow
Aspect Ratios 2.35:1 vs 1.85:1 vs 1.77:1 (16:9)
Aspect Ratios 2.35:1 vs 1.85:1 vs 1.77:1 (16:9)
Published: 2015/08/26
Channel: DPCinemaTalk
5 Movies That Change Aspect Ratio Midway Through
5 Movies That Change Aspect Ratio Midway Through
Published: 2016/03/19
Channel: Movie Munchies
Understanding Aspect Ratio & Resolution
Understanding Aspect Ratio & Resolution
Published: 2015/12/18
Channel: EliteScreensInc
BEST ASPECT RATIO | 16:9 VS 4:3 STRETCHED VS BLACK BARS - CS:GO Guide
BEST ASPECT RATIO | 16:9 VS 4:3 STRETCHED VS BLACK BARS - CS:GO Guide
Published: 2016/08/22
Channel: luckySkillFaker
Resolution and Aspect Ratio Explained
Resolution and Aspect Ratio Explained
Published: 2012/09/07
Channel: Projector People
What is the LG G6
What is the LG G6's 18:9 aspect ratio all about? - Gary explains
Published: 2017/03/10
Channel: Android Authority
Aspect Ratio Video
Aspect Ratio Video
Published: 2007/08/17
Channel: Accord Productions
Flight Discovery - Aspect Ratio
Flight Discovery - Aspect Ratio
Published: 2014/04/29
Channel: MAJ1
Monitor/Screen/Display Specs Explained ft. Display Resolution, Aspect Ratio, Ultrawide
Monitor/Screen/Display Specs Explained ft. Display Resolution, Aspect Ratio, Ultrawide
Published: 2014/12/07
Channel: NCIX Tech Tips
Google Pixel 2 Introduction with 18:9 | Aspect Ratio, Infinity Display, Dual Camera
Google Pixel 2 Introduction with 18:9 | Aspect Ratio, Infinity Display, Dual Camera
Published: 2017/06/23
Channel: Inside Future Now
What happens when Jurassic World is projected incorrectly (tricky aspect ratio)
What happens when Jurassic World is projected incorrectly (tricky aspect ratio)
Published: 2015/06/12
Channel: Film Divider
Film Aspect Ratio Overview and Tutorial
Film Aspect Ratio Overview and Tutorial
Published: 2012/03/04
Channel: VidMuze
Aspect Ratio - Pocket Film School™ #4
Aspect Ratio - Pocket Film School™ #4
Published: 2015/03/11
Channel: ProfessorPuppet
Creative Aspect Ratio Techniques
Creative Aspect Ratio Techniques
Published: 2014/05/14
Channel: Tuts+ Photo & Video
Photo School: Aspect Ratios
Photo School: Aspect Ratios
Published: 2014/01/15
Channel: nevercenter
Video Aspect Ratio: what it is and which one to choose?
Video Aspect Ratio: what it is and which one to choose?
Published: 2015/10/19
Channel: Filmora MVP
Pixel Aspect Ratio Explanation
Pixel Aspect Ratio Explanation
Published: 2013/03/23
Channel: TomasPat1
YouTube Aspect Ratio Problem Fix
YouTube Aspect Ratio Problem Fix
Published: 2013/05/31
Channel: GunsKnivesSurvival
On the Waterfront - Aspect Ratio Visual Essay
On the Waterfront - Aspect Ratio Visual Essay
Published: 2013/02/19
Channel: criterioncollection
You
You're doing "Cinematic" aspect ratios ALL WRONG!
Published: 2017/05/11
Channel: EposVox
Aspect Ratios: What You Need to Know About Image Sizes in Shopify
Aspect Ratios: What You Need to Know About Image Sizes in Shopify
Published: 2013/07/24
Channel: Shopify
DSLR tutorial: Understanding aspect ratios | lynda.com, DSLR Video Tips series
DSLR tutorial: Understanding aspect ratios | lynda.com, DSLR Video Tips series
Published: 2012/08/10
Channel: LinkedIn Learning Solutions
Aspect ratios in Adobe Premiere Pro CC
Aspect ratios in Adobe Premiere Pro CC
Published: 2014/04/28
Channel: Ian Killick
Tutorial Adobe Premiere Pro CC - Episode 28 - Achieving Cinema Aspect Ratios
Tutorial Adobe Premiere Pro CC - Episode 28 - Achieving Cinema Aspect Ratios
Published: 2015/06/16
Channel: chinfat
Transformers 5 - The Last Aspect Ratio
Transformers 5 - The Last Aspect Ratio
Published: 2017/06/25
Channel: vladoportos
IMAX® Presents: Expanded Aspect Ratio
IMAX® Presents: Expanded Aspect Ratio
Published: 2017/03/15
Channel: IMAX
AMDM Aspect Ratios - Changing Tires
AMDM Aspect Ratios - Changing Tires
Published: 2017/01/24
Channel: bill miller
CS:GO Aspect ratio, 4:3 Why?
CS:GO Aspect ratio, 4:3 Why?
Published: 2015/11/17
Channel: Tasorrog
Premiere Pro: 21:9 vs. 16:9 Get the Screen Aspect Ratio You Want Without Exporting Black Bars
Premiere Pro: 21:9 vs. 16:9 Get the Screen Aspect Ratio You Want Without Exporting Black Bars
Published: 2016/03/11
Channel: Stan Arthur
Quick Lesson 4: Understanding Image Aspect Ratio
Quick Lesson 4: Understanding Image Aspect Ratio
Published: 2013/12/11
Channel: Jeremy Smith
Warcraft 3 - How to Fix Resolution & Aspect Ratio
Warcraft 3 - How to Fix Resolution & Aspect Ratio
Published: 2017/06/21
Channel: wtiiwarcraft
Lightroom 5 tutorial: Using the aspect ratio crop overlay | lynda.com
Lightroom 5 tutorial: Using the aspect ratio crop overlay | lynda.com
Published: 2013/04/19
Channel: LinkedIn Learning Solutions
CINEMATIC or ANAMORPHIC aspect ratio 2.39:1 in 16:9 video? (1 minute tutorial #3) FREE DOWNLOAD!
CINEMATIC or ANAMORPHIC aspect ratio 2.39:1 in 16:9 video? (1 minute tutorial #3) FREE DOWNLOAD!
Published: 2017/03/09
Channel: Orange83
VIDEO ESSAY - How Aspect Ratio tells a Story in Film
VIDEO ESSAY - How Aspect Ratio tells a Story in Film
Published: 2016/09/06
Channel: The Film Essay
Give Your Video A 1 to 1 Aspect Ratio in Premiere Pro
Give Your Video A 1 to 1 Aspect Ratio in Premiere Pro
Published: 2016/05/05
Channel: GaryAt FullSail
Aspect Ratio Images
Aspect Ratio Images
Published: 2016/06/06
Channel: Udacity
RETROPIE CHANGE ASPECT RATIO FOR GAMES
RETROPIE CHANGE ASPECT RATIO FOR GAMES
Published: 2017/02/28
Channel: Madlittlepixel
Record in 16:9 aspect ratio and remove black bars from videos using OBS | QRESPO
Record in 16:9 aspect ratio and remove black bars from videos using OBS | QRESPO
Published: 2016/07/09
Channel: Qrespo
How To Get 2.35 Film Aspect Ratio with Premiere Pro! - Tutorial
How To Get 2.35 Film Aspect Ratio with Premiere Pro! - Tutorial
Published: 2014/02/23
Channel: Cobalt Creative Studios
How to change the aspect ratio on your decoder
How to change the aspect ratio on your decoder
Published: 2014/01/24
Channel: SuperSport
How is K-POP playing with Aspect Ratio?
How is K-POP playing with Aspect Ratio?
Published: 2016/07/20
Channel: Cover your Ears
SOLIDWORKS Simulation – Aspect Ratio
SOLIDWORKS Simulation – Aspect Ratio
Published: 2012/04/10
Channel: GoEngineer
How To Change PowerPoint Slide Size & Aspect Ratio from 4:3 to 16:9
How To Change PowerPoint Slide Size & Aspect Ratio from 4:3 to 16:9
Published: 2014/04/15
Channel: The Mobile Studio Company
Adjusting image size and aspect ratio | GoPro | lynda.com
Adjusting image size and aspect ratio | GoPro | lynda.com
Published: 2014/11/09
Channel: LinkedIn Learning Solutions
Aspect Ratio Explained ► GoPro Basics 101
Aspect Ratio Explained ► GoPro Basics 101
Published: 2017/02/08
Channel: Tom's Odyssey
The Day After (1983 Full, Original - 1:75:1 Aspect Ratio)
The Day After (1983 Full, Original - 1:75:1 Aspect Ratio)
Published: 2015/11/07
Channel: Hollywood Land
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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The aspect ratio of a geometric shape is the ratio of its sizes in different dimensions. For example, the aspect ratio of a rectangle is the ratio of its longer side to its shorter side – the ratio of width to height,[1] when the rectangle is oriented as a "landscape".

The aspect ratio is expressed as two numbers separated by a colon (x:y). The values x and y do not represent actual widths and heights but, rather, the relationship between width and height. As an example, 8:5, 16:10 and 1.6:1 are three ways of representing the same aspect ratio.

In objects of more than two dimensions, such as hyperrectangles, the aspect ratio can still be defined as the ratio of the longest side to the shortest side.

Applications and uses[edit]

The term is most commonly used with reference to:

Aspect ratios of simple shapes[edit]

Rectangles[edit]

For a rectangle, the aspect ratio denotes the ratio of the width to the height of the rectangle. A square has the smallest possible aspect ratio of 1:1.

Examples:

Ellipses[edit]

For an ellipse, the aspect ratio denotes the ratio of the major axis to the minor axis. An ellipse with an aspect ratio of 1:1 is a circle.

Elps-slr.svg

Aspect ratios of general shapes[edit]

In geometry, there are several alternative definitions to aspect ratios of general compact sets in a d-dimensional space:[2]

  • The Diameter-Width Aspect Ratio (DWAR) of a compact set is the ratio of its diameter to its width. A circle has the minimal DWAR which is 1. A square has a DWAR of sqrt(2).
  • The Cube-Volume Aspect Ratio (CVAR) of a compact set is the d-th root of the ratio of the d-volume of the smallest enclosing axes-parallel d-cube, to the set's own d-volume. A square has the minimal CVAR which is 1. A circle has a CVAR of sqrt(2). An axis-parallel rectangle of width W and height H, where W>H, has a CVAR of sqrt(W^2/WH) = sqrt(W/H).

If the dimension d is fixed, then all reasonable definitions of aspect ratio are equivalent to within constant factors.

Notations[edit]

Aspect ratios are mathematically expressed as x:y (pronounced "x-to-y").

Cinematographic aspect ratios are usually denoted as a (rounded) decimal multiple of width vs unit height, while photographic and videographic aspect ratios are usually defined and denoted by whole number ratios of width to height. In digital images there is a subtle distinction between the Display Aspect Ratio (the image as displayed) and the Storage Aspect Ratio (the ratio of pixel dimensions); see Distinctions.

See also[edit]

References[edit]

  1. ^ Rouse, Margaret (September 2005). "What is aspect ratio?". WhatIs?. TechTarget. Retrieved 3 February 2013. 
  2. ^ Smith, W. D.; Wormald, N. C. (1998). "Geometric separator theorems and applications". Proceedings 39th Annual Symposium on Foundations of Computer Science (Cat. No.98CB36280). p. 232. ISBN 0-8186-9172-7. doi:10.1109/sfcs.1998.743449. 

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