Vertical video (9:16) for TikTok, Reels and Shorts, explained once

Every short-video feed that matters for product ads shows video the way a phone is held: tall and narrow. If you have made ads for a landscape world, the switch raises a handful of practical questions that keep coming back. What does 9:16 actually mean? Where can I safely put things? Do I need a separate version for each app? Can I reuse a video I already have? This article answers them once.

What 9:16 means

9:16 is an aspect ratio: for every nine units of width, the picture is sixteen units tall. It is the same shape as a phone screen held upright, which is why it fills the whole screen in a vertical feed with no bars.

The common pixel size follows from the ratio. At 1080 pixels wide, 9:16 gives 1080 × 16 ÷ 9 = 1920 pixels tall. A landscape video is the same numbers the other way around: 1920 wide, 1080 tall. That is why rotating a landscape frame does not give you a vertical video; it gives you a sideways one. Vertical video has to be composed vertically.

Why the feeds all use it

Phones are held upright. A video that fills the upright screen has nothing beside it: no neighbouring post, no sidebar, no comments competing for the eye until the viewer asks for them. For an ad, that is the most attention a feed is ever going to give you. A landscape video in the same feed sits as a small strip in the middle of the screen with large empty areas above and below, and it reads as something that belongs somewhere else.

So the first rule is simple: make the ad vertical from the start. Everything made with Image to video in Clipelle is 9:16, with a portrait presenter and a product clip generated for the tall frame, so you never have to think about this one.

Where the interface sits on top of your video

Here the three apps differ in detail but agree in principle. Each draws its own interface over the lower part and the right edge of your video: the account name, the caption text, the sound name, and a column of buttons for liking, commenting and sharing. The top carries the feed tabs. None of that is part of your file, but all of it covers part of your picture.

The practical consequence is that the middle of the frame is the safe part. Keep the subject there. Anything placed in the bottom quarter or along the right edge may be hidden behind the app's own text and buttons, and the exact areas shift between apps and between updates.

In a Clipelle ad there are only two things on screen besides the presenter and the product clip: the captions, and an optional small logo in the top right. The presenter is framed as a portrait, which puts the face in the safe middle. If you translate an existing video, you choose whether the burned-in captions sit low or in the middle; for a video going into a feed, the middle is the safer choice, because the low position is closest to the area the apps cover.

One file for three apps

A common question is whether each app needs its own export. For the file itself, no. A 9:16 MP4 of the right length works across TikTok, Instagram Reels and YouTube Shorts. The differences are in how each app handles the upload, the description and the sound, not in the video.

What does vary is tolerance for length. All three feeds reward videos that make their point quickly, and a product ad has no reason to be long. Clipelle offers 10, 20, 30, 45 or 60 seconds, with 30 as the default. Thirty seconds is enough for a hook, a problem, the product, the benefits and a spoken call to action. Make the 30-second version first; if it works, a 10 or 20-second cut of the same idea is a cheap second test.

Making a vertical ad from scratch

When you start from a photo, the vertical format is built in. The presenter takes the full height of the frame, the product clip is laid over at fixed moments, and the captions run across the whole video. A few choices on the form matter more in the vertical frame than you might expect:

• The photo. A portrait or square photo with room around the product gives the clip step something to move across in a tall frame. A wide photo with the product small in the centre does not.
• The presenter background. The presenter's own background, a flat colour or your own image. In a tall frame the background takes up a lot of space; a plain colour that fits your brand keeps the eye on the face and the captions.
• The brand style. The accent colour highlights the spoken word in the captions. Choose one that stands out against the presenter background.

Converting a video you already have

The other case is an existing landscape video, often an explainer or a founder talking to camera, that you want in a vertical feed, and perhaps in another language at the same time. Here there is a real trade-off.

A 16:9 video reframed to 9:16 shows only the middle part of the width. If the speaker stands in the centre, that works: you get a tall frame with the person in it. If the video has two people at the edges, a slide on one side, or text that spans the width, the middle crop loses them.

Translate & lipsync in Clipelle gives you the choice per project: 9:16 for the vertical feeds, or the original format when the width carries information. The translated speech is lip-synced in either case, and the captions are burned in low or in the middle. Silence at the start and end is trimmed, which matters in a feed where the first second decides whether the viewer stays. When in doubt, look at the video and ask: is everything I need inside the middle third of the width? If yes, go vertical.

A checklist before you upload

• The file is 9:16: taller than it is wide, in the common 1080 by 1920 size or the same proportion.
• The subject sits in the middle of the frame, not along the bottom or the right edge.
• The only text on screen is the captions, and they sit where the app's own text will not cover them.
• The video starts on content, not on a black frame or a pause.
• The length matches the message: 30 seconds when there is something to explain, 10 or 20 when there is not.
• If it is a reframed landscape video, nothing important was in the parts that were cropped away.

Where captions come in

In a vertical feed the captions are not a courtesy; many viewers never turn the sound on, and in a Clipelle ad the captions are the only text there is. How to make them readable, and why we chose captions over text cards, is the subject of Captions people actually read.