Please wait while we enable your Account


Contacting Amazon Web Services
Deploying Cloud Servers, Storage, Transcoding & Database Servers
Deploying Global CDN
Deploying Firewall & Enabling Security Measures
Deploying the CMS & Admin Module
Deploying Website, Mobile & TV Apps framework
Creating your FTP account
Finishing up all the modules
Preparing for launch

Understanding Video Aspect Ratios: A Complete Guide

Ishita Banik Published on : 29 November 2021
A Guide to Understand Video Aspect Ratios


In the fast-paced realm of streaming businesses, where visual content reigns supreme, understanding the intricacies of video aspect ratios is paramount. With the exponential growth of online streaming platforms, it has become increasingly vital to grasp the significance of aspect ratios in delivering visually captivating and immersive content. 

As a streaming business, your goal is to captivate your audience, and selecting the right aspect ratio is a crucial aspect of achieving this objective. From widescreen 16:9 to traditional 4:3 and even vertical formats, each aspect ratio has its own unique effect on how your content is perceived and experienced. 

We will delve into the details of each aspect ratio, examining their applications and advantages in various streaming platforms. Furthermore, we will explore how aspect ratios contribute to maintaining visual consistency across different devices, ensuring that your content retains its intended impact, regardless of the viewing platform. 

So, let’s get started!


What are Video Aspect Ratios?

Video aspect ratios refer to the proportional relationship between the width and height of a video frame. It represents the shape or format of the video display. Aspect ratios are expressed as a ratio of two numbers, typically separated by a colon. The first number represents the width of the video frame, while the second number represents the height.

To get the aspect ratio from a video resolution, you have to simply divide the width by the height. For instance, if the video resolution is 1920 px by 1080 px, then the aspect ratio will be 16:9.

Note that, for a single aspect ratio there can be multiple video resolutions.

I,e. for 16:9 aspect ratio, the possible resolutions are- 

  • 1600 x 900 (HD+)
  • 1280 x 720 (HD)
  • 3200 x 1800 (QHD+)
  • 2560 x 1440 (QHD)



Video Aspect Ratio: History, Overview, and Significance

Video aspect ratio is a fundamental aspect of visual storytelling, playing a crucial role in the composition and presentation of video content. Historically, aspect ratios have evolved alongside advancements in technology and changes in visual media. 

In the early days of cinema, the standard aspect ratio was 4:3, known as the Academy ratio. This ratio was inherited from the aspect ratio of 35mm film stock and became the industry standard for both film and television. 

However, with the rise of widescreen formats, such as CinemaScope, a new aspect ratio emerged – 2.35:1. This wider aspect ratio allowed for a more immersive cinematic experience and became popular in the film industry.

In the 1950s and 1960s, television sets started to adopt a wider aspect ratio of 16:9, known as the widescreen or HDTV (High-Definition Television) aspect ratio. This aspect ratio became the standard for high-definition content and is now widely used in modern displays and streaming platforms. Today, aspect ratios vary depending on the intended platform and purpose of the video content. 

  • The choice of aspect ratio has significant implications for video production. It affects the framing, composition, and overall visual aesthetics of the content. 
  • Different aspect ratios can evoke different emotions and convey distinct messages to the audience. For example, widescreen ratios like 16:9 are often used for immersive storytelling, while square ratios like 1:1 are ideal for showcasing products or capturing attention in social media feeds.
  • In the context of streaming businesses, understanding aspect ratios is vital for optimizing the viewing experience across different devices and platforms. Ensuring that videos are displayed correctly and consistently enhances the visual quality and user engagement.
  • Streaming platforms and video-on-demand services often have specific requirements and guidelines regarding aspect ratios to maintain a uniform experience for their viewers.


Types of Video Aspect Ratios

1. Standard Ratio (4:3)

The standard aspect ratio, also known as 4:3, was the traditional aspect ratio for television and computer monitors. It has a nearly square shape, with the width being four units and the height being three units. 

This ratio was prevalent in older CRT televisions and earlier digital displays. It is still used in specific contexts, such as retro-themed videos or certain broadcasting formats.

2. Widescreen Ratio (16:9)

The widescreen aspect ratio, commonly referred to as 16:9, has become the standard for high-definition video content. It offers a wider and more cinematic viewing experience compared to the standard ratio. 

With a width of 16 units and a height of nine units, this aspect ratio is widely used in television, streaming platforms, online videos, and modern displays. It provides a visually immersive experience and is compatible with most devices and screens.

3. Ultra-Widescreen Ratio (21:9)

The ultra-widescreen aspect ratio, often denoted as 21:9, offers an even wider and more expansive viewing experience compared to the widescreen ratio. It is commonly used in cinematic presentations and gaming monitors. 

With a width of 21 units and a height of nine units, this aspect ratio provides a panoramic view and enhances the cinematic feel of videos. However, it may require special formatting and is not universally supported by all platforms and devices.

Different video aspect ratios

4. Square Ratio (1:1)

The square aspect ratio, represented as 1:1, has equal width and height dimensions. This ratio is popularly used in social media platforms like Instagram. It is well-suited for mobile viewing and sharing and is often used to showcase products or capture attention in social media feeds. 

The square format offers a balanced and symmetrical composition, allowing content creators to focus on central elements within the frame.

5. Vertical Ratio (9:16)

The vertical aspect ratio, denoted as 9:16, is specifically designed for vertical or portrait-oriented videos. It is commonly used in platforms like TikTok and Snapchat, where users primarily view videos on mobile devices in a vertical orientation. 

This ratio provides an optimized viewing experience for mobile users, allowing content to occupy the entire screen in portrait mode.

6. Custom Ratio

While standard aspect ratios are widely used, there are instances where custom aspect ratios are necessary. Custom ratios can be tailored to specific project requirements, accommodating unique screen dimensions or creative choices. 

Content creators can define the desired width and height dimensions to create a custom aspect ratio that suits their vision.

7. Full Frame Ratio

The full frame ratio refers to a 3:2 aspect ratio commonly found in photography. It is based on the dimensions of standard 35mm film frames. This aspect ratio is often used in slideshows, presentations, or videos that aim to emulate the look and feel of traditional film photography.

8. Panoramic Ratio

Panoramic aspect ratios, such as 2.35:1 or 2.39:1, are commonly used in film production to create a wide, cinematic view. These ratios provide an expansive visual experience, emphasizing sweeping landscapes or grandiose compositions. 

Panoramic ratios are often associated with epic movies or high-budget productions, capturing the viewer’s attention and creating a sense of awe and immersion.

8. CinemaScope Ratio

CinemaScope aspect ratio, specifically 2.35:1 or 2.39:1, is a widescreen format that was popularized in the 1950s. It was developed to provide a wider cinematic experience compared to the standard 4:3 aspect ratio. 

CinemaScope offers an immersive viewing experience, with a wide horizontal span that fills the audience’s field of vision. This ratio became synonymous with epic films and is still used in modern cinema to create a sense of grandeur and spectacle.

The significance of different aspect ratios lies in their ability to convey specific visual experiences and evoke different emotions. The choice of aspect ratio depends on various factors, including the intended platform, target audience, and the creative vision of the content. 



Best Video Aspect Ratios for Video Streaming/OTT platforms

When it comes to video streaming and Over-The-Top (OTT) platforms, choosing the right video aspect ratio is crucial for delivering a seamless and immersive viewing experience. Let’s explore some of the best video aspect ratios for video streaming and OTT platforms.

1. Widescreen (16:9)

It offers a cinematic viewing experience and is compatible with modern high-definition displays. This aspect ratio is widely supported across different devices and platforms, making it an ideal choice for delivering content to a broad audience.

2. Square (1:1)

The square aspect ratio, with equal width and height dimensions, has gained popularity with the rise of social media platforms like Instagram. 

3. Custom Aspect Ratios

In some cases, custom aspect ratios may be required based on specific platform requirements or creative considerations. OTT platforms often have their own guidelines for aspect ratios, and content creators may need to adapt to these requirements. 


Also Read: SD, HD,and 4K- Streaming Video Resolutions Explained


How to Choose the Aspect Ratio for Your Videos

The aspect ratio has a major role in determining the mood, composition, and overall impact of your video content on the audience. A few tips to choose your aspect ratio-

  • Always choose the aspect ratio before shooting your content.
  • Opt for the aspect ratio based on the media your content will be played on. For instance, the standard aspect ratio for YouTube on a computer is 16:9, also for live streaming this is usually the best aspect ratio.
  • Plan beforehand which platforms your video content will be shared on and make a list of the best respective aspect ratios so that your videos don’t turn out to be cropped or with black bars at the top or bottom on the main platforms.
  • 16:9 works for almost all platforms, devices, has high quality and is easy to capture. However it is recommended to have a clear knowledge on other aspect ratios as well.

Also, there are specific aspect ratios that work the best for various social media. And you must be well-aware of that before streaming or sharing your video content on these media-

Video aspect ratios

Understanding video aspect ratios is one of the basics to nail before you make your video content and stream those over various platforms. Based on the type of videos, audience, as well as which platforms it can be shared on later, you should opt for a video aspect ratio. 

Even for live streaming, always keep in mind where it will be viewed the most, for instance, there are different aspect ratios that work the best for different social media and so on. Having a clear idea on video aspect ratio will help you in the long run, especially if you are operating in the streaming industry.

Muvi Live, the enterprise-grade live streaming platform, lets you deliver buffer-free video content from multiple screens, cameras, and platforms with differential aspect ratios easily without any external support. 

Muvi Live comes with the exclusive feature-packed solutions like ultra-low latency live streaming, recording & sharing live streaming across various platforms, DVR-enabled live streaming, offline viewing and social media integration, to name a few.

Get started today to know more.



  • What are the common video aspect ratios?

Common video aspect ratios include 16:9 (widescreen), 4:3 (standard), and 1:1 (square). Other ratios like 21:9 (ultrawide) and 9:16 (vertical) are also used for specific purposes like cinematic or mobile content.

  • How does aspect ratio affect the viewing experience?

Aspect ratio affects the viewing experience by shaping the video’s visual composition. Wider ratios enhance the sense of immersion, while narrower ratios may feel more traditional. The chosen aspect ratio should complement the content and display device to optimize the viewing experience.

  • Can I change the aspect ratio of a video?

In most cases, the aspect ratio of a video is determined during recording or editing and cannot be easily changed. Altering the aspect ratio can lead to distorted visuals or cropping. However, certain video editing software or platforms may offer limited options to resize or adjust aspect ratios.

  • Can aspect ratio impact video quality?

Aspect ratio doesn’t directly impact video quality. The quality depends on factors like resolution, compression, and encoding. However, incorrectly handled aspect ratio changes can affect the perceived quality, causing distortion or loss of details.

  • Are there aspect ratio standards for different platforms?

Different platforms often have recommended aspect ratio standards to ensure optimal viewing and compatibility. For example, YouTube favors 16:9, Instagram prefers square (1:1) or vertical (9:16), and cinema screens typically use wider ratios like 2.39:1. Adhering to platform standards helps in delivering the best viewing experience.

Written by: Ishita Banik

Ishita is a Content Writer with Muvi Marketing Team. Apart from business writing, she is also an acclaimed author of three best seller romantic thriller novels. In 2020, she got featured in The Hindustan Times, a leading news portal as an inspirational Indian author.

Add your comment

Leave a Reply

Your email address will not be published.

Start Live Streaming For Free

No Credit Card Required

Upcoming Webinar
June 27

9:00AM PST

Leveraging Analytics for Success in the Streaming Industry

A streaming platform’s success is crucially dependent on data. In today’s competitive streaming landscape, data is king. This webinar will unlock the secrets of using analytics to gain…...

Event Language: English
30 Minutes