---
title: "Convert Horizontal Video to Vertical"
description: "Turn 16:9 video into 9:16 without cropping: blurred-background fit, split layouts and auto-reframe, with free FFmpeg commands and platform size rules."
url: https://exemplary.ai/blog/convert-horizontal-video-to-vertical
published: 2025-12-06
updated: 2026-09-30
author: "Sarath Chandran"
publisher: "Exemplary AI (https://exemplary.ai)"
---

# Convert Horizontal Video to Vertical

To convert a horizontal (16:9) video to vertical (9:16) without cropping, place the whole frame inside a 1080 × 1920 canvas and fill the space above and below it, usually with a blurred, enlarged copy of the same video. This is called a "fit" or letterbox layout, and YouTube's own Shorts tool uses the same trick ([YouTube Help](https://support.google.com/youtube/answer/15824265?hl=en)). The trade-off is size: the picture fills only about a third of the screen's height. If that's too small for your video, there are two alternatives that crop, but crop intelligently: a **split layout** that stacks two parts of the frame, and **auto-reframing** that follows the subject. Below is how to do each, with free commands you can copy.

## The three ways to go vertical

| Layout | What you keep | What you give up | Best for |
|---|---|---|---|
| **Fit** (blurred or coloured background) | The whole frame | Size: the video fills about 32% of the screen height | Slides, screen recordings, wide shots, anything with text at the edges |
| **Split** (two regions stacked) | Two subjects, each large | The middle and edges of the original frame | Two-person podcasts, interviews, gameplay with a face-cam |
| **Fill + reframe** (crop that follows the subject) | One subject, full screen | Everything outside a narrow column | A single speaker, vlogs, anything with one clear focus |

Where the 32% comes from: a 16:9 frame scaled to 1,080 pixels wide is 1,080 × 608, which fills 608 of the canvas's 1,920 pixels of height.

## Check the target first

- **YouTube Shorts:** YouTube classifies a video as a Short when it's square or vertical and up to three minutes long. A 16:9 upload stays a regular long-form video ([YouTube Help](https://support.google.com/youtube/answer/15424877?hl=en)), so converting is required, not optional. The maximum resolution for Shorts is 1080p ([YouTube Help](https://support.google.com/youtube/answer/10059070?hl=en)).
- **Instagram Reels:** you can upload a reel with an aspect ratio between 1.91:1 and 9:16, with a minimum of 30 fps and 720 pixels of resolution ([Instagram Help Center](https://www.facebook.com/help/instagram/1038071743007909)). A 16:9 video is inside that range, so Instagram will take it, but it won't fill a phone screen the way a 9:16 reel does.
- **Square (1:1) as a middle ground:** YouTube counts square videos as Shorts too. In a 1,080 × 1,080 frame, a 16:9 video is the same size as in 9:16, with far less empty space around it.

Aim for a 1080 × 1920 export at the source's frame rate. For more on each platform's limits, see [how long YouTube Shorts can be](https://exemplary.ai/blog/how-long-can-youtube-shorts-be) and the [Instagram Reels length limit](https://exemplary.ai/blog/instagram-reels-length-limit).

## Method 1: Fit with a blurred background (no cropping)

### In a video editor

Any editor with a blur effect can do this:

1. Create a project or sequence at 1080 × 1920.
2. Put your horizontal clip on the timeline and scale it until it's exactly the canvas width. It will sit in the middle with empty space above and below.
3. Duplicate the clip onto the track underneath.
4. Scale the bottom copy up until it covers the whole canvas, then add a strong blur. Lower its brightness a little so the sharp copy stands out.
5. Export at 1080 × 1920.

### With FFmpeg (free, one command)

[FFmpeg](https://ffmpeg.org/) is a free command-line tool that does the whole thing in one step. This makes a 1080 × 1920 video with the full frame in the centre over a blurred copy:

```
ffmpeg -i input.mp4 -filter_complex "[0:v]scale=1080:1920:force_original_aspect_ratio=increase,crop=1080:1920,boxblur=20:5[bg];[0:v]scale=1080:-2[fg];[bg][fg]overlay=(W-w)/2:(H-h)/2" -c:a copy vertical.mp4
```

For a plain black background instead of a blur:

```
ffmpeg -i input.mp4 -vf "scale=1080:-2,pad=1080:1920:(ow-iw)/2:(oh-ih)/2:black" -c:a copy vertical.mp4
```

We tested both on a 1920 × 1080 file, and both produced a 1080 × 1920 video with the full original frame intact.

### Use the empty space

The bands above and below the video are free real estate. Put a short title or hook in the top band and the captions in the bottom band, where they won't cover anything in the picture. That turns the letterbox from a compromise into a layout. Keep text away from the very bottom and right edges, where the apps draw their buttons and post text.

## Method 2: Split layout (two subjects, both large)

If the horizontal frame has two things worth seeing side by side, such as two podcast hosts or a game and a face-cam, cut the frame in two and stack the halves. Each half then fills half the vertical screen, much bigger than in a fit layout.

This FFmpeg command takes the left and right halves of a 1920 × 1080 video, crops each to fit, and stacks them into 1080 × 1920:

```
ffmpeg -i input.mp4 -filter_complex "[0:v]crop=960:854:0:113,scale=1080:960[top];[0:v]crop=960:854:960:113,scale=1080:960[bot];[top][bot]vstack" -c:a copy split.mp4
```

The numbers assume each person sits in the middle of their half. If not, change the crop's x and y offsets (the last two numbers in each `crop=`) to move each window. In an editor, you'd do the same with two cropped copies of the clip, one placed in the top half of the canvas and one in the bottom.

Split layouts do crop, since each window shows only part of its half, but nobody gets cut out of the shot, which is usually what "without cropping" is really about.

## Method 3: Fill and reframe (crop that follows the action)

When there's one subject, filling the screen usually looks better than a small letterboxed picture. The catch with a fixed centre crop is that people move. Reframing tools track the subject and move the crop window with them:

- **DaVinci Resolve Studio** includes Smart Reframe among its AI tools ([Blackmagic Design](https://www.blackmagicdesign.com/products/davinciresolve/studio)). It's in the paid Studio version.
- **YouTube's own tools:** in the YouTube app, **Remix > Edit into a Short** lets you select up to 60 seconds of one of your videos and tap **Layout** to choose a different layout ([YouTube Help](https://support.google.com/youtube/answer/12836917?hl=en&co=GENIE.Platform%3DAndroid)). In YouTube Studio, **Clips and Shorts** turns part of a long video into a Short, and scenes that don't fill the vertical frame show as a blurred crop of the video in the final version ([YouTube Help](https://support.google.com/youtube/answer/15824265?hl=en)).
- **AI clip tools:** [Exemplary AI](https://exemplary.ai/resize-videos) (our product) switches clips between 9:16, 1:1 and 16:9 with Fill, Fit and Split layouts, and its speaker framing follows whoever is talking. Split layouts handle two, three or four speakers. You then edit the captions and export an MP4.

**Watch the resolution.** A 9:16 crop from a 1920 × 1080 source is only about 608 × 1080 pixels, which has to be enlarged by about 1.8 times to fill 1080 × 1920, so it looks softer. From a 4K (3840 × 2160) source, the same crop is about 1215 × 2160, which scales *down* to 1080 × 1920 and stays sharp. If you know a video will be cut into vertical clips, shoot it in 4K.

## Which method should you use?

- **Text, slides, charts or a screen recording:** Fit. Cropping would cut off words.
- **One person talking to camera:** Fill and reframe.
- **Two people in a wide shot:** Split, or Fill with speaker framing that cuts between them.
- **A landscape, a crowd or a sports play:** Fit, since the whole point is the wide view.
- **A long recording you want many clips from:** an [AI clipping tool](https://exemplary.ai/ai-clips) that picks the moments and reframes them in one pass. Our guide to [turning long videos into Shorts](https://exemplary.ai/blog/turn-long-videos-into-shorts) covers choosing the moments.

## Common mistakes

- **Rotating the video.** Turning a 16:9 video 90 degrees makes it vertical but sideways. Change the canvas instead.
- **Baking in black bars and uploading as 16:9.** The file is still horizontal, so YouTube treats it as long-form. The canvas itself must be 1080 × 1920.
- **Upscaling a small source.** Cropping a 720p video to 9:16 leaves very few pixels. Use Fit, or find a higher-resolution original.
- **Captions over the picture in a Fit layout.** Move them into the empty band below the video.
- **Changing the frame rate.** Export at the source's frame rate. Instagram asks for at least 30 fps.

Once the video is vertical, add captions for people watching with the sound off: see [how to add captions to YouTube Shorts](https://exemplary.ai/blog/add-captions-to-youtube-shorts) and [how to add captions to Reels](https://exemplary.ai/blog/add-captions-to-instagram-reels).

## FAQ

### How do I make a horizontal video vertical without cropping?

Use a fit layout: scale the video to the width of a 1080 × 1920 canvas and fill the space above and below with a blurred copy of the video or a solid colour. Nothing is cut from the original frame.

### Can I upload a horizontal video as a YouTube Short?

No. YouTube only treats square or vertical videos of up to three minutes as Shorts. A 16:9 video stays a regular long-form video ([YouTube Help](https://support.google.com/youtube/answer/15424877?hl=en)).

### What size should a vertical video be?

1080 × 1920 pixels (9:16). That's YouTube's maximum resolution for Shorts, and it sits inside Instagram's accepted range of 1.91:1 to 9:16 for reels.

### Will converting to vertical lower the quality?

Not with a fit layout, because the video is scaled down from 1920 to 1080 pixels wide. Cropping a 1080p video to fill the screen does enlarge it by about 1.8 times, which looks softer. A 4K source avoids that.

### Is it better to crop or letterbox?

It depends on what's in the frame. Crop (fill and reframe) when there's one subject to follow. Letterbox (fit) when the whole frame matters, such as text, slides or a wide shot.

> Exemplary AI is a browser-based AI tool that turns long videos and recordings into short captioned clips, transcripts in 99 languages, subtitles, translations into 116 languages, and written posts such as summaries, blog posts and YouTube chapters. It is built for YouTubers, podcasters and marketing teams; the Free plan includes 500 one-time credits with watermarked video exports. Pricing: https://exemplary.ai/pricing