Change Aspect Ratio
Change Video Aspect Ratio Online – 16:9, 9:16, 1:1, 4:5, 21:9
VideoMuto changes a video’s aspect ratio — 16:9, 9:16, 1:1, 4:5, 21:9 and more — entirely in your browser.
- No file limits
- No registration
- Free forever
- Videos never leave your browser
fit a video to a new frame shape for social platforms. Choose the ratio — 16:9, 9:16, 1:1, 4:5, 21:9 — and decide whether to crop or pad the frame.
Everything runs locally — your file never leaves this device.
How to Change a Video’s Aspect Ratio
Add Your Video
Drop the video you want to reframe onto the page.
Choose the Ratio and Fit
Pick a ratio like 16:9 or 9:16, then choose crop or padding (color or blurred background).
Download the Reframed Video
Click Convert and download the video in its new shape.
Why Change Aspect Ratio?
Stories, Reels, Shorts, and feed posts each want a different frame shape. A landscape video looks wrong in a vertical slot.
Crop keeps it clean; padding keeps every pixel. The choice is yours and it happens without uploading.
Aspect Ratio Options
| Ratios | 16:9, 9:16, 1:1, 4:5, 21:9, 4:3, 2.39:1 |
|---|---|
| Fit | Crop or padding (color / blurred background) |
| Output | Reframed video file |
| Registration | Not required |
| Upload | None, processed on your device |
Frequently asked questions
Which aspect ratios are available?
16:9, 9:16, 1:1, 4:5, 21:9, 4:3, and 2.39:1, plus custom ratios.
What is the difference between crop and padding?
Crop cuts the video to fill the new shape, removing edges. Padding adds bars or a blurred background so the whole frame fits without cutting anything.
Does changing the ratio lose quality?
No. The video is not re-encoded for the ratio change alone — cropping or padding is all that happens.
Your videos never leave your browser
All processing happens locally on your device. Nothing is uploaded to a server, stored, or tracked.