Short-Form Video
Definition
Video short enough to watch without deciding to. Usually under 60 seconds, vertical at 9:16, and built to be understood with the sound off. TikTok, Reels, and Shorts all run on it. Each app allows longer uploads now, but the feeds still reward the short cut.
The format is a set of constraints rather than a length. Vertical, because the phone is already vertical. Captioned, because publishers told Digiday in 2016 that as much as 85% of their Facebook video views played without sound, and feeds have autoplayed muted ever since. Front-loaded, because the feed hands you a viewer who has not yet decided to watch. And finite in a way long-form is not, since the real ceiling is somebody's patience rather than the runtime.
Those constraints have edges. On a 9:16 frame the platform's own interface takes a strip across the top for the header, a column down the right for the like and share buttons, and a deep band along the bottom for the caption and the progress bar. Put key text in any of those and TikTok covers it with its own chrome. The usable middle is what you actually get to compose in.
The hard caps stopped being the constraint. YouTube Shorts takes up to 3 minutes since October 2024, Instagram Reels allows 3 minutes in the app since January 2025, and TikTok accepts uploads up to 10 minutes. What the feeds reward is still the short cut, so plenty of creators write to 45 seconds and never test the ceiling.
The reason the format took over is unglamorous: it is the cheapest content to consume, and since the tooling caught up, the cheapest to produce. A creator in 2019 needed a camera, a lavalier, a light, and most of an afternoon. The same creator now needs an idea and a script, and the render happens while they write the next one.
None of that makes short-form easy. It makes it fast, and fast only helps if the first line is worth staying for. Volume without a hook produces more videos nobody finished.
Related
Related terms
Narration spoken by a model instead of a person. You hand it text, it hands back audio with pacing, emphasis, and breath in roughly the right places. Good enough on a 30-second clip that most listeners never think about it, and cheap enough that you can redo the take forty times.
Video HookThe first one to three seconds, which is the whole audition. A viewer decides to stay or swipe before your second sentence lands, so the hook has to carry a promise the rest of the video pays off. Everything downstream inherits whatever audience the hook managed to keep.
CTA (Call-to-Action) in VideoThe line that tells a viewer what to do next. Follow, comment, tap the link, or buy. It usually lives in the last three to five seconds, and it works better when the ask is small and specific than when it is broad and polite.
AI Subtitle GenerationCaptions written and timed by software instead of typed by hand. There are two ways to get them: transcribe the audio, or take the text you already wrote and align it to the voice track. The second way cannot misspell a name, because it never guesses at what was said.
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