An AI UGC video can nail the hook, the pacing and the product shot, and still lose people in the first two seconds because they can’t hear it. Plenty of viewers scroll with the sound low or off, and even the ones with sound on read faster than they listen. On-screen captions carry your selling line to both.<\/p>\n
This guide covers what to do after the video is generated: what to put on screen, where TikTok’s buttons will cover it, which caption styles suit an ad, and how to reuse one winning video in other languages. It works whether you made the video with Oumomo’s Viral Remake<\/a>\u00a0or Link to Video, filmed it yourself, or got it from a creator.<\/p>\n The word means two different things on TikTok, and an ad needs both.<\/p>\n Both sit near the bottom of the screen, which is exactly why placement matters.<\/p>\n Captions follow the audio, so finish the voiceover first. If you wrote the script with Oumomo’s Viral Script Generator, play the final video against it: an AI voice sometimes changes a word, and the captions should match what is said, not what was planned.<\/p>\n Check three things before moving on:<\/p>\n Typing captions by hand for a 30-second ad takes longer than making the ad. An AI caption tool transcribes the voice and times each word, and you only fix what it gets wrong.<\/p>\n Keep one or two short lines on screen at a time, about 20 to 25 characters each. “Stains gone in 10 seconds” works; a full sentence wrapping over three lines doesn’t, because the viewer is still reading when the next shot starts.<\/p>\n Disclosure: I build Captions Generator<\/a>, a free subtitle generator with no watermark<\/a>, so this is the workflow I know best. Any tool that times captions to each word and lets you edit the text will do the job.<\/p>\n TikTok draws its interface on top of your video: Following, For You and search at the top; the username, ad caption, sound and call-to-action button at the bottom; like, comment, save and share down the right. Captions placed in the “natural” spot near the bottom end up hidden under the ad caption.<\/p>\n For a 1080 \u00d7 1920 video, a safe area based on TikTok’s own safe-zone files is:<\/p>\n TikTok notes that the exact area changes with ad caption length and extras such as anchors, so download the current files from TikTok Ads Help<\/a>\u00a0for a final check.<\/p>\n The practical rule: put captions just above the bottom third, below the speaker’s face, and never over the product.<\/p>\nTwo kinds of “captions” on TikTok<\/h2>\n
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Why on-screen captions matter more in a UGC ad<\/h2>\n
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Step 1: Lock the audio before you caption<\/h2>\n
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Step 2: Generate word-timed captions<\/h2>\n
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Step 3: Keep captions inside TikTok’s safe zone<\/h2>\n
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