Short-form video is vertical video, typically under a minute and rarely more than a few minutes, made to be watched on a phone in a swipeable feed. The main homes for it are TikTok, Instagram and Facebook Reels and YouTube Shorts, and the same format now runs through LinkedIn, Snapchat and Pinterest too.
How short-form video works
These feeds are built on recommendation rather than following. Each video is shown to a small group first, then to more people if they watch it through, rewatch, share or comment. Account size matters less than in older feeds, because each video is judged largely on how the first viewers respond. Watch time and the share of people who stay past the opening seconds carry particular weight.
The format has its own conventions. Video is shot 9:16 to fill the screen. The opening second carries a hook that tells the viewer why to stay. Text sits on screen because many people watch with the sound off, and key elements avoid the edges where the app’s buttons sit. Length limits change: at the time of writing (October 2026), YouTube Shorts and Instagram Reels accept up to three minutes and TikTok allows far longer uploads, but most short videos that hold attention stay well under a minute.
Short videos are also searchable. People type questions into TikTok and YouTube, and Google shows short videos in its own results for many how-to and product searches, which links the format to YouTube SEO and social search.
Why it matters for a UK business
For most consumer brands and many local businesses, short-form video is now the main route to people who have not heard of you on social media. It is well suited to showing rather than telling: a plasterer skimming a wall, a florist building a hand-tied bouquet, an accountant explaining the Self Assessment deadline in forty seconds.
It is also cheap to produce. A recent phone, a clip-on microphone and natural light are enough for most businesses. The real cost is time and consistency, which is why a routine matters more than kit. And the same videos often make the best paid creative, because ads that look native to the feed tend to hold attention better than polished commercials.
Common mistakes
- Making a mini television advert with a logo sting and a voiceover, which viewers recognise and skip.
- No hook: the first two seconds are a greeting or a slow establishing shot.
- Copying a trend that has nothing to do with the business, so the views never turn into customers.
- Posting a TikTok file with its watermark on Reels or Shorts.
- Missing captions, which loses muted viewers and people with hearing loss.
- Giving up after five videos. Results come from volume and learning, not a single upload.
How to act on it
Write a list of the questions customers ask most often. Each answer is a video. Use a simple structure: a hook that names the problem, two or three points, then one next step. Film eight to twelve in one session each month so you are never scrambling.
Edit in a phone app, add captions, export a clean file and post it natively to each platform with a caption rewritten for that app’s search habits. If you already have longer content such as webinars or podcast episodes, cut the strongest minute into a short.
Review every few weeks: watch time, the share of viewers who stayed past three seconds, shares, follows, and enquiries or sales. Turn the strongest organic videos into ads. Planning and running Facebook video, Reels and Stories ads from that material is part of my paid social work, and a Reel is often where a video starts.