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A large share of short-form video is watched with the sound off — on the train, in bed next to a sleeping partner, in a waiting room — which means if your message only lives in the audio, most of your audience never gets it. Captions aren't an accessibility afterthought or decoration; they're a retention tool, because moving text gives a muted viewer a reason to keep watching and reading. On top of captions, a single line of on-screen text at the very start — your hook, spelled out — lets a silent scroller understand what they're getting in the first second. Modern tools auto-generate captions in one tap, so this costs you two minutes and can be the difference between a video that reads clearly on mute and one that looks like a person silently mouthing at a wall.
The fastest path: CapCut (free, mobile or desktop) has an "Auto captions" button that transcribes your whole clip in about ten seconds. Import your footage, tap Captions, tap Auto captions, and it generates synced text. Then you do the two-minute cleanup: fix any word it misheard (it will mishear "chili flakes" as "chilly flakes" — fix it), bump the font size up so it's readable on a small phone screen, and make sure the text sits in the safe zone — not so low the platform's UI (the like button, the caption bar) covers it. CapCut's built-in caption styles keep text legible with an outline or background so it survives busy footage.
Separately, add your hook as a bold line of on-screen text for the first two seconds. On the pasta short, the moment the pan hits the stove, the words "This $3 dinner kept me alive in college" appear big across the top — so a muted viewer reads the promise before they've decided to keep scrolling. Now the real test, and it's simple: turn your phone's volume all the way to zero and watch your own short start to finish. Can you follow the entire point with no sound? If a step is unclear on mute, add a short text label for it. If you can't follow it silently, neither can most of your audience. Other tools do the same job — CapCut is the default, but Submagic and Veed.io specialize in punchy auto-captions if you want more style. The rule is the same regardless of tool: readable, in the safe zone, and the message survives with the sound off.