Video Aspect Ratio Changer

Find the right shape for your video. Compare 16:9, 9:16, 1:1 and 4:5 while keeping the full source visible in the canvas.

YOUR CREATIVE WORKSPACE

Video studio

Your video

Up to 30 MB · Local preview

Example video: 9:16 · 9.6 sec

Choose your format

Output quality

Creative controls

Source size 100%Describe the surroundings Optional

98 credits1 format · Example: 9.6 sec

AI-expanded example

Preview zoom100%Auto-fit

Drag to make the preview larger or smaller. Output size stays the same.

AI-expanded example · 720p

OUTPUTS

720p MP4 example

One format or many Upfront credit estimate Your original file stays intact

MAKE ROOM FOR YOUR VIDEO

How do I choose the right video aspect ratio?

Choose the shape required by the placement: 16:9 for widescreen, 9:16 for a tall frame, 1:1 for square or 4:5 for a shorter portrait composition. ExpandClip supports all four layout presets, separately or together. Aspect ratio changes shape; it does not automatically increase image detail.

Useful for: Planning several placements from one source without assuming every platform needs a separate export.
Composition tip: Choose the formats your placements need. One 9:16 composition can serve TikTok, Reels and Shorts.

See the source and result Try it with your video

THREE STEPS TO YOUR COMPOSITION

How to change video aspect ratio

01
Add your source video
The editor reads the clip's dimensions and duration. You can also switch between the example's four output formats to compare their shapes.
02
Choose a ratio or several
Select landscape 16:9, vertical 9:16, square 1:1 or portrait 4:5. Use the Outputs row to inspect each selected format.
03
Check the composition
Compare subject size and the expansion area. Save your selected formats and estimate as a draft in My videos.

Read the video aspect ratio guide

SAME SOURCE. THREE DIFFERENT CHOICES.

Change the format. Choose what you keep.

Compare a 9:16 source in a 16:9 canvas before choosing AI expansion.

LESS OF THE ORIGINAL

Crop to fill

Fills the frame by trimming the edges. Useful when all the important action fits inside the crop.

THE WHOLE SHOT, WITH FILLER

Fit with a blurred background

Keeps the entire source over a blurred copy. A practical option when you only need a different canvas.

SPACE FOR NEW SCENERY

ORIGINAL

THE WHOLE SHOT, NEW SURROUNDINGS

Expand the scene with AI

Plans space for new scenery around the original. AI generation uses credits and the result needs review.

Compare three ways to fit the same shot into a new frame.

Compare cropping, blur and outpainting

16:9, 9:16, 1:1 or 4:5?

Use 16:9 for a wide player or presentation, 9:16 for a full-height vertical composition, 1:1 for a square layout and 4:5 for a taller feed composition. Match the placement rather than assuming every post on a platform needs the same shape.

Aspect ratio versus video resolution

Aspect ratio describes width relative to height. Resolution describes the pixel dimensions. Changing the shape does not automatically sharpen a low-resolution source. Keep those decisions separate when planning an output.

Set a custom video canvas width and height

One clip can have several useful formats

Start with the format you need now, then add others for separate placements. Four platforms do not necessarily require four different ratios. If preserving every edge is the main concern, compare the available framing approaches.

Resize a video without cropping the source