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Do AI UGC Ads Need Captions?

Most viewers scroll on mute. Which Flovaly modes caption automatically, which let you turn it off, and why it never changes the credit cost.

· 6 min read

Yes — almost every AI UGC ad benefits from captions, because most people scroll social feeds with the sound off and won't stop to turn it on for an ad. On Flovaly specifically, the question is less “should I add captions” and more “which modes already do it for me”: Talking Actors and UGC clips burn in captions by default with no extra credit charge, Re-voice lets you toggle them off, and plain Video or face-swap clips with no spoken script have nothing to caption in the first place.

Why captions matter even when the ad has dialogue

Sound-off viewing isn't a niche behaviour on TikTok, Reels, or Feed placements — it's close to the default way short-form video gets watched, whether that's a commute, a workplace, or just habit. An ad that only lands its hook through spoken audio loses that hook entirely for anyone scrolling on mute, and burned-in captions are what carry the message through anyway. They also help genuinely: viewers who are deaf or hard of hearing, watching in a second language, or simply catching a video mid-scroll all rely on text they can read at a glance rather than audio they have to listen for.

How captions actually work in Flovaly, mode by mode

Caption behaviour isn't one global setting — it's decided per generation route, based on whether there's a spoken script to caption:

  • Talking Actors— captions default ON whenever a voiceover script is attached, which is every Talking Actors generation. There's no captions toggle in the Studio for this mode; a Talking Actors clip ships captioned.
  • UGC (the product-ad workflow in Nano Banana Pro compositing) — captions default ON too, because captioned UGC reliably performs better on sound-off feeds than uncaptioned clips. Like Talking Actors, the Studio doesn't expose a way to switch this off.
  • Re-voice — captions also default ON, but this is the one mode with an actual toggle in the Studio: a “Burn captions into the output” checkbox sits right next to the voice picker, so you can turn them off for this specific clip.
  • Plain Video / face-swapwithout an attached voiceover script defaults captions OFF — there's no spoken line to turn into text, so nothing gets burned in.

Under the hood, captions are generated as timed chunks of roughly five to seven words — the readable range for burned-in text on a 9:16 phone screen — either split evenly across the known script and clip duration (Talking Actors) or transcribed from the audio (Re-voice, when there's no original script to reuse), then rendered directly into the video file.

Captions don't cost extra credits

Whether a clip gets captions or not has no effect on its price. Flovaly's credit cost is driven by duration, resolution, and whether a voiceover script is attached — the same 7-credit five-second Talking Actors clip (5 base plus 2 for the voiceover) costs 7 credits whether the caption toggle happens to be on or off. UGC clips work the same way: a five-second 720p UGC generation is 5 credits, un-changed by the caption burn-in step. See the full AI video ad cost breakdown for how every generation type prices out.

When you'd actually want captions off

A few real reasons to turn burned-in captions off, where the Studio allows it (Re-voice today):

  • You're publishing to TikTok specifically and want to use TikTok's own native caption tool instead, so the timing and styling match the platform's built-in look rather than a second, separately rendered layer of text.
  • The clip is heading into a localized version in another language, and burning in English captions now would mean re-shooting the text pass later instead of adding fresh captions once per language.
  • It's a brand or explainer clip going somewhere other than a sound-off social feed — an email embed, a landing-page hero video, a pitch deck — where autoplay audio is more likely to actually be on.

For Talking Actors and UGC clips, where there's no in-Studio toggle, the practical workaround if you genuinely don't want the burned-in text is to keep the script short and let the captions sit as a lighter design element in the frame, since they can't currently be switched off for those two modes.

Getting the caption itself right

Burned-in captions only help if they're accurate and legible. Keep product names and numbers deliberate in your script— an unusual brand name or a price read quickly is exactly where auto-generated captions are most likely to mishear a word, since the Talking Actors path times captions against the script you actually wrote, but Re-voice's transcription-based captions depend on how clearly the line was spoken in the source audio. Preview the clip before publishing rather than assuming the caption matches every word.

The short version: on Flovaly, captions are already the default for any clip with a spoken script, they don't add to the credit cost, and Re-voice is the one place you can turn them off if a specific placement calls for it. Start a captioned clip with the $1 trial, or read how to make AI UGC ads that don't look AI for the rest of what separates a scroll-stopping clip from an obvious one.

FAQ

Do AI UGC ads need captions?

For almost any placement on TikTok, Reels, or Feed, yes — most viewers scroll with sound off, and captions are what carry the message and the hook when audio isn't playing. They also make the clip usable for viewers who are deaf or hard of hearing, or watching in a second language.

Does Flovaly add captions automatically?

Yes, for any clip with a spoken script. Talking Actors and UGC generations burn in captions by default with no toggle to turn them off. Re-voice also defaults to captions on but includes an actual checkbox to disable them. Plain Video and face-swap clips with no voiceover script have nothing to caption, so none get added.

Can I turn off captions on Flovaly?

Only in Re-voice, where a “Burn captions into the output” checkbox sits next to the voice picker. Talking Actors and UGC generations don't currently expose a way to switch captions off in the Studio.

Do captions cost extra credits on Flovaly?

No. Credit cost is set by duration, resolution, and whether a voiceover script is attached — not by whether captions get burned in. A captioned and uncaptioned version of the same clip cost the same.

How accurate are Flovaly's AI-generated captions?

For Talking Actors, captions are timed against the exact script you wrote, so the text itself is exactly what you typed. For Re-voice, captions come from transcribing the spoken audio, so accuracy depends on how clearly the line was delivered — it's worth previewing the clip before publishing rather than assuming a perfect match.

FAQ

Do AI UGC ads need captions?

For almost any placement on TikTok, Reels, or Feed, yes — most viewers scroll with sound off, and captions are what carry the message and the hook when audio isn’t playing. They also make the clip usable for viewers who are deaf or hard of hearing, or watching in a second language.

Does Flovaly add captions automatically?

Yes, for any clip with a spoken script. Talking Actors and UGC generations burn in captions by default with no toggle to turn them off. Re-voice also defaults to captions on but includes an actual checkbox to disable them. Plain Video and face-swap clips with no voiceover script have nothing to caption, so none get added.

Can I turn off captions on Flovaly?

Only in Re-voice, where a “Burn captions into the output” checkbox sits next to the voice picker. Talking Actors and UGC generations don’t currently expose a way to switch captions off in the Studio.

Do captions cost extra credits on Flovaly?

No. Credit cost is set by duration, resolution, and whether a voiceover script is attached — not by whether captions get burned in. A captioned and uncaptioned version of the same clip cost the same.

How accurate are Flovaly’s AI-generated captions?

For Talking Actors, captions are timed against the exact script you wrote, so the text itself is exactly what you typed. For Re-voice, captions come from transcribing the spoken audio, so accuracy depends on how clearly the line was delivered — it’s worth previewing the clip before publishing rather than assuming a perfect match.

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