Text overlay
Add a headline, a hook or a CTA onto a video ad and have it sized, placed and held for the right length in the ratio it actually runs in. This is text you choose, not a transcript of what is said — so it works on product footage, b-roll and silent clips.
This tool runs inside Soku, not on this page. Write the text you want on the video — it stays with you through sign-up.
Create a free account and your brief comes with you — it is kept on this page through sign-up, so you are not retyping it afterwards.
Upload the clip and write the lines you want on it, with roughly when each should appear. A hook, a turn and a CTA is the usual shape for a paid-social ad, and each one is its own line rather than a single block of text.
Type size and position are set for the ratio the ad runs in and kept clear of the areas each platform covers with its own UI. Text that sits under a TikTok caption bar is text nobody reads.
Take the finished file, or produce the same clip with different hooks to test which line does the work. Changing the first two seconds is usually a bigger lever than changing the footage.
Why Soku
These are two different jobs and conflating them is why so much paid-social creative reads badly.
An auto-caption tool writes down what was said. This writes what you decided the ad should claim — which may be nothing that is spoken aloud, and often is not spoken at all.
Product shots, screen recordings, drone footage and stock clips have no speech to transcribe. A captioning tool has nothing to work with on any of them; a text overlay is the only option.
Where the line sits, how big it is and how long it holds change whether it is read at all. Those are chosen per ratio rather than defaulted to centre-bottom.
Use cases
Paid social teams
The fastest creative test available is the same video with five different opening lines. It isolates the one variable that most reliably moves through-rate, and it costs nothing but the overlay.
Ecommerce
Product b-roll with no text is a mood piece. The same clip with the price, the discount or the guarantee on screen is an ad. Most catalogue footage needs exactly one line to become sellable.
Anyone running muted placements
Feed video autoplays without sound. If the point of the ad is only in the voiceover, most of the audience never gets it — the on-screen line is the whole message for them.
Soku AI
