Pre-roll video ad scripts (3 seconds to hook)

Quick Answer

Pre-roll plays before the content the viewer actually wants. The viewer is hostile, the timer is visible and the skip button is one tap away. Your hook is not the first 5 seconds, it is the first 3, and it has to do something the viewer's brain physically cannot ignore.

The full script (scene by scene)

Product: A learn-Spanish app.

Scene 1 (0.0s to 3.0s) The 3-second hook

• Visual: A presenter looks at camera and says one short sentence in Spanish, then immediately translates it.


• Audio: "'Estoy aprendiendo espanol en doce minutos al dia.' That sentence took me four days."

Scene 2 (3.0s to 7.0s) Personal credibility

• Visual: Presenter at a kitchen table, phone in hand.


• Audio: "I gave up Duolingo last year. Three months in, I could not order a coffee in Madrid."

Scene 3 (7.0s to 12.0s) The mechanism

• Visual: Phone screen showing the app's lesson interface, voice prompts and instant feedback.


• Audio: "This one is built around speaking, not tapping. You repeat what a real teacher says, then you get a score."

Scene 4 (12.0s to 17.0s) Proof

• Visual: Customer footage of someone in a Mexico City taqueria ordering in Spanish.


• Audio: "Two months later this is me ordering tacos. Real conversation, no app."

Scene 5 (17.0s to 22.0s) Offer and CTA

• Visual: Pack shot of the app, free trial sticker.


• Audio: "Try the first 7 days free. Tap below."

Why it works

The 3-second hook works because it does the unexpected. The viewer was bracing for a logo or a music sting and instead heard a foreign sentence translated in real time. The brain has to process the audio before deciding whether to skip, and that processing time is the entire battle.

By the end of scene 2 you have established who the speaker is, what they tried before, and why they stopped. This is the credibility frame that makes scenes 3 and 4 land.

Common mistakes

• Using a logo or brand reveal in second one. The viewer skips before the logo finishes its animation.
• Speaking too softly. Pre-roll is sound-on by default, so the audio mix has to punch.
• Asking a rhetorical question in the first 3 seconds. Rhetorical questions are pure delay, no payoff.
• Hiding the language switch behind a long English setup. The Spanish line is the hook; lead with it.
• Forgetting to put a card or button on the final frame. Pre-roll ends, the next video plays, your viewer is gone.

FAQs

How long should pre-roll ads be?
15 to 25 seconds is best. Beyond 30 seconds the skip rate climbs above 70 percent.

Should the hook be visual or audio?
Both, locked together. Audio drives recall, visual drives attention.

Can I use a faceless hook?
Only if the visual is genuinely arresting (a transformation, a reveal, a side-by-side). Faceless hooks lose to face-first hooks 8 times out of 10.

What is the best bid strategy for pre-roll?
Cost cap or bid cap, never lowest cost. Pre-roll auctions are noisy and lowest-cost burns budget on cheap-but-irrelevant placements.

Should I A/B test the first 3 seconds in isolation?
Yes. Lock scenes 2 to 5 and only swap the opener. You will find a 2x winner within 8 to 12 variants.

Bring your video ads to life with Pix-Vu

Pix-Vu lets you generate a dozen pre-roll opener variants from a single base script. Test the 3-second window first, find the winner, then run it everywhere.