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Product video is now the primary driver of discovery on TikTok Shop, Instagram Shopping, and YouTube and most eCommerce brands don’t have a video production team to keep up with the demand. Captions lets you generate UGC-style ads, product demos, and ad variations fast enough to actually test and iterate, without hiring a creator or a production crew.

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Why eCommerce sellers use Captions

The biggest lever in eCommerce video isn’t production quality it’s volume and variety. You need to test multiple hooks, multiple angles, multiple formats to find what converts. Captions makes that possible without a team: you can generate a UGC ad from your product URL, create five variations with different hooks, and have them ready to test on TikTok or Meta in the time it used to take to brief a freelancer. Most product content fails silently because buyers scroll without sound. Auto-captions ensure your key selling points the problem you solve, the before-and-after, the hook register even when the video is muted. That’s table stakes now. And when you need to look authentic rather than over-produced, AI Ads and AI Twin let you generate spokesperson-style content without hiring a creator or stepping in front of a camera yourself.

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Features that matter most

AI Ads

Generate UGC-style ads from a product URL or script. Paste your product page and Captions reads the details, suggests a script, and produces a finished ad the fastest path from product to publishable creative.

Ad Variations

Create multiple versions of the same ad with different hooks, captions, or visuals. Essential for testing the hook determines most of your ad performance, so you need at least 3–5 variants before you know what works.

AI Twin & Prompt to Video

Generate a spokesperson video without hiring a creator. Record a one-minute video to create your AI Twin, then use it to deliver any product script or use Prompt to Video to generate a talking-head video without a camera at all.

Captions & Styles

Auto-transcription with 75+ style templates. Product content lives or dies on captions silent scrollers need to read your hook, your key benefit, and your CTA to take action.

B-roll & Media Overlays

Layer product shots, lifestyle imagery, or application close-ups over your talking-head footage. Showing the product in use not just being described is the difference between a scroll-stopper and a scroll-past.

Background Removal

Clean up a messy home-studio background or place yourself in a product lifestyle context without a location shoot. Keeps the focus on you and the product.

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A typical workflow

1

Paste your product URL into AI Ads

Go to AI Ads and paste your product page URL. Captions reads the product details and generates an ad script automatically headline, hook, key benefits, and CTA.
2

Choose a hook style

Select a hook format: problem/solution, result-first, before-and-after, or social proof. The hook is the most important creative decision the first three seconds determine whether anyone watches the rest.
3

Pick a spokesperson or use your AI Twin

Choose from the available actors, or use your AI Twin if you’ve set one up. For brands where authenticity matters, your own face (via AI Twin) tends to outperform a generic actor.
4

Generate the ad

Captions produces the finished ad with captions, pacing, and visual treatment applied. Review and make any adjustments tweak the script, change the caption style, or swap the background.
5

Create 3–5 variations with different hooks

Use Ad Variations to generate multiple versions with different opening hooks. Keep everything else identical so you’re actually testing the hook variable, not multiple things at once.
6

Export and test

Export and run the variations as split tests on TikTok Ads or Meta. Give each variation enough spend to generate meaningful data before cutting underperformers.

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Tips for eCommerce

  • Lead with the problem, not the product. The first three seconds should name the pain your buyer has not your brand name or your product. “Tired of foundation that transfers everywhere by noon?” outperforms “Introducing StaySet Foundation” every time.
  • Show the product being used, not just described. B-roll of the product in action texture, application, before-and-after converts better than a talking head alone. Film extra close-up shots during your shoot specifically for overlay use.
  • Test at least 3 different hooks before judging a concept. Ad performance is mostly determined by the hook. A great product with a weak hook will underperform a mediocre product with a strong one. Always test variations.
  • Keep product demos under 60 seconds for social. For TikTok and Reels, 30–60 seconds is the sweet spot. Save longer demos (2–3 minutes) for YouTube or your product page.
  • Add a clear CTA at the end. A text overlay with “Shop now link in bio” or “Available on TikTok Shop” tells the viewer exactly what to do. Don’t assume they’ll figure it out.

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Go deeper

Create a UGC ad

Step-by-step guide to generating a UGC-style ad from scratch.

Product URL to ad

How to use your product page to auto-generate an ad script and finished creative.

Ad variations

How to generate multiple hook variations and structure your creative tests.

AI Ads

Full documentation for the AI Ads feature.
Last modified on April 20, 2026