Choosing the right video format for every platform

The most common mistake in brand video is treating format as an export setting. A team makes one widescreen film, crops it square for LinkedIn and vertical for Reels, and then concludes that social video does not work for them. The film did not fail because it was on the wrong platform. It failed because a crop throws away the composition and keeps the timing.

Aspect ratio changes the shot, not the border

A 16:9 frame is a horizontal stage: you place a subject on one side and let the other side breathe, and you can run text beside an image. Crop that to 9:16 and the breathing space is gone, the text is off-screen, and the subject is now sitting oddly high. Vertical is a column — one idea stacked over another, subject centred, type large. These are different compositions of the same idea, not different windows onto one composition.

This is why re-composing beats cropping. Same story, same script, same brand: different staging per shape.

What each shape is for

16:9 — Widescreen

Your homepage hero, YouTube, conference screens, sales emails opened on a laptop. Room for side-by-side composition and longer scenes. This is the format that can carry a 60–90 second film without feeling long.

9:16 — Vertical

Reels, TikTok, Shorts, Stories. Full-bleed, centred, big type. Assume the bottom fifth and top eighth are covered by platform UI and keep anything that matters out of them. Shorter: 15–30 seconds, with the hook in the first second.

1:1 — Square

Feed placements, especially LinkedIn and paid social. It takes more vertical space in a feed than 16:9 without demanding a full-screen commitment. A good default when you can only make two shapes.

Length, honestly

Length should follow placement, not preference. A film embedded on a pricing page can run 90 seconds because the viewer arrived with intent. The same film in a paid feed placement has about a second and a half to earn the next five. If you are making one film for both, make the first ten seconds work standalone and let the rest reward the people who stayed.

• Paid social: 15–30 seconds, hook inside the first second, brand visible early rather than saved for the end.
• Organic social: 30–60 seconds if the story earns it.
• Website hero: 30–60 seconds, autoplay muted, looping, no hard cut back to black.
• Sales and email: 60–90 seconds, because the click already signalled interest.
• Conference or event: 30–45 seconds, designed for a big screen and a room that is still settling.

Captions are not an accessibility afterthought

Feed video is often encountered without sound, so captions should be treated as a primary channel, not a fallback. That has design consequences: type has to be large enough to read on a phone at arm's length, it needs to sit inside the safe area, and it should be styled as part of the film rather than dropped on top of it by the platform's auto-captioner. Burn them in and control them.

A practical starting set

If you can only produce a few things, start with a 16:9 version for owned surfaces, a shorter 9:16 hook for social and a square feed cut. Those are useful starting points, not universal durations; compose each for its shape rather than cropping one master into all of them.