Captions

Our transcription engine achieves 98%+ accuracy on clear speech and maintains strong performance on accented English, fast delivery, and informal creator language. The model is specifically fine-tuned on UGC-style content rather than broadcast audio, which is why it handles the natural pauses, filler words, and energetic delivery typical of ad scripts better than general-purpose transcription services. After auto-transcription, the full text is editable word-by-word in our interface before you apply or export — so you can correct any rare errors or clean up filler words before the captions go live in your ad.

Yes. BasedUGC can transcribe the original speech and simultaneously generate translated captions in any of our 74 supported languages. This is different from just translating text — our system aligns the translated caption timing to match the original speech rhythm so captions appear at the right moment even when translated words are longer or shorter than the originals. For full localization including translated audio and lip-sync, combine Captions with our Translate Video tool for a complete multilingual ad in a single efficient workflow that produces native-feeling content in every market.

We offer four animated caption styles: Word Highlight (each word lights up as it's spoken — the most popular style for TikTok), Subtitle (standard subtitle block at the bottom of frame), Pop-Up (words appear one at a time in an energetic bounce animation), and Scroll (continuous text flows across the frame). All four are fully customizable: font family, size, weight, color, stroke, shadow, background fill, position, and animation speed. You can save a style preset to your brand kit and apply it to every generation automatically without re-configuring each time you produce a new video.

Studies across Meta and TikTok ad accounts consistently show captioned videos outperform uncaptioned versions by 15–40% on watch time and 10–25% on conversion rate, depending on vertical and audience. The impact is highest on placements that auto-play muted — which includes the majority of in-feed placements on Facebook and Instagram. Captions also improve accessibility for deaf and hard-of-hearing viewers, expanding your effective audience without any additional targeting spend. For performance advertisers, adding captions is one of the highest-ROI creative optimizations available at essentially zero additional production cost.