Filmora Video Editor
Best video editing tool to customize the aspect ratio
  • Various aspect ratios available
  • Automatic and manual cropping, panning and zooming
  • 300+ built-in filters and overlays to make transition more smoothly
  • Edit and enhance videos easily

Change Aspect Ratio from 4:3 to 16:9, 1:1 and Vice Versa (Windows 10 included)

What is Aspect Ratio: The term Aspect Ratio refers to the relationship between the width and height of a video, irrelevant to the actual physical size of the picture, however. Aspect ratio is expressed in the form of "width:height", for example, 4:3 and 16:9 which are the main video aspect ratio, a.k.a 1.3:1 and 1.78:1.

The most common video aspect ratios are 4:3 (1.3:1) and 16:9 (1.78:1). The former is the standard TV format, while the latter is the latest widescreen TV format. Besides these two, 1:1 are also popular for social media. As far as you may know, many media players enable you to change the aspect ratio in real time. Yet the change is temporary. Next time you open it, you need to make changes again. In this article, we will let you know how to change aspect ratio to 4:3, 16:9, 1:1 and 9:16.

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Part 1: Choose the Right Video Editor

To change the aspect ratio permanently, you need a video editor or converter. Here I humbly recommend Wondershare Wondershare Filmora (Windows 10 supported), which lets you create both 4:3 and 16:9 video for sharing on TV, computer, web and YouTube. This article will show you how to change aspect ratio step by step. Check it out.

You May Also Like: How to Remove Black Bars from YouTube Videos >>

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Part 2: How to Change Aspect Ratio

Step 1 Choose an aspect ratio to get started

If you like, you could choose a target aspect ratio at the beginning. It depends on the aspect ratio of your media source. If most of your media source files are in 4:3 aspect ratios, you should select 4:3 standard aspect ratio. For you've select an aspect ratio, then the media files that are in 16:9 or other aspect ratio will be converted with black bar, and be stretched if necessary. This is the solution when aspect ratio discordance occurs. But if you just want to change aspect ratio of one video file, simply choose an aspect ratio and go.

If you want to change aspect ration later, just select full feature mode.

choose aspect ratio

Step 2 Import video files

Now import your video to change aspect ratio to the program by clicking the Import button or simply by dragging and dropping video files from File Explorer to the program's primary windows.

video aspect ratio import

Optionally, you can edit and enhance your video with plenty of visual effects, titles and all common video editing tools.

Step 3 Change aspect ratio

There are two methods to change aspect ration in Filmora.

Method 1: Right click on cilp to select crop and zoom. Then a pop-up window will appear. By clicking manually, 16:9, 4:3, 1:1 and 9:16 at the bottom, you can change aspect ratio. After selecting, click OK. Then you will find aspect ratio will change.

change aspect ratio

Method 2: Depending on your needs, you can either save your videos to computer for media player or mobile device, directly upload to YouTube, or burn to DVD for watching on standard or wide screen TV. To do so, click "Create" button when you are happy with your video.

change aspect ratio

  1. Change aspect ratio for device
  2. The default tab is "Device". You can save your video in formats that are compatible with all popular devices, including iPhone, iPod, iPad, PSP, etc. When you've chosen a device, all resolutions with optional aspect ratio will be given. Simply choose your favorite resolution from the list. The higher, the better video quality, but also larger file size.

  3. Change aspect ratio for computer
  4. Switch to "Format" to save video in specified aspect ratio to computer. Once a format is selected, all resolutions with different aspect ratios are available. Depending on the resolution, the output video aspect ratio is different. For example, 1280x720 is a 16:9 video, but 640x480 is a 4:3 video. Or input 480x480 to customize 1:1 video. You could calculate the aspect ratio yourself. Always change aspect ratio to the same with your choice at the beginning. Otherwise, black bars may be added.

  5. Change aspect ratio for YouTube
  6. Go to "YouTube" tab and type in your information before clicking the "Create" button. There is no need to select an aspect ratio for second time. Your videos will be directly uploaded to YouTube depending on your select at the beginning.

  7. Change aspect ratio for TV
  8. It's easy to switch aspect ratio for TV between 4:3 and 16:9. When you're in the "DVD" tab, you'll see an aspect ratio option. Simply choose what you want depending on your TV's screen.


Usually, you can change aspect ratio in a media player like VLC Media Player, but that's temporary change. You need a video editor for changing video aspect ratio like Wondershare Filmora (originally Wondershare Video Editor).

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Sep 21,2018 11:21 am

Product-related questions? Speak directly to our Support Team >>

NO, U only have 4:3 and 16:9
Have you got solution?
I want to creat videos for mobile phones in potrait mode. They have an aspect ratio of 9:16. I am not able to do that in this software. Can anyone help, please? It's urgent.
me too
Same here.
A square ratio would be very helpful, since that is the new preferred format for Facebook and Instagram
I would like to know too
How can i create 1:1 videos for facebook and instagram?
Still no 21:9, 16:10 and 1:1. AND NO 4K :(
What about a square ratio?
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