Facebook Ad Script

• A Facebook ad script is the spoken lines and on-screen text of a video ad, beat by beat. It is not the ad copy around the ad, a creative brief, or Marketing API code.
• Put who the ad is for and what it offers into the first four seconds, in speech and on-screen text. In a 421-video sample, the median viewer watched about four seconds, and that barely changed with video length.
• Budget words from seconds. At about 2.5 spoken words per second, a 15-second ad holds about 38 words and its first four seconds about 10.
• Run six pass/fail checks before filming. Two come from rules: Meta's ban on implying personal attributes and the FTC's rules on testimonials.

The primary text, headline and description around the ad are ad copy, which is a separate document. A beat is one job in the ad: hook, product in use, proof, or call to action.

Multiply the seconds in each beat by about 2.5 spoken words per second. That is a model, not an official figure. It assumes a speaking pace of about 150 words per minute with no long pauses; slow-paced or music-led ads need fewer words. A timed read-through by your own speaker should replace it. By this math a 15-second ad holds about 38 words (15 × 2.5 = 37.5), and its first four seconds hold 10.

Fitting words into a 15-second script

The example below is for a hypothetical water bottle brand. The claim and lines are placeholders, and any real claim needs substantiation first.

The script totals 34 words, under the 37.5 budget. Show "Locking lid. No leaks." on screen from the first frame, so the claim reaches a viewer who is not listening. Meta's ads guide recommends video captions and sound, though it lists both as optional.

Fill-in template for 15 seconds (about 38 words):

• 0 to 4 seconds, Hook: [who the ad is for + the claim], about 10 words
• 4 to 9 seconds, Product in use: [what it does], about 12 words
• 9 to 12 seconds, Proof: [one fact], about 7 words
• 12 to 15 seconds, Call to action: [one action], about 7 words

Fill-in template for 30 seconds (about 75 words, 30 × 2.5):

• 0 to 4 seconds, Hook: [who the ad is for + the claim], about 10 words
• 4 to 30 seconds (26 seconds, about 65 words): Product in use [what it does], Proof [one fact], Call to action [one action]

Most viewers leave within seconds: the median viewer in one 2026 sample watched about four seconds, and the average hook rate in another was 25.44%. Biddy's analysis of 421 Meta videos from 21 brands (collected July 6 to October 4, 2026, $10.3 million combined spend) found that median, and it barely changed with video length. It describes viewers who watched, not all impressions. Billo's analysis of 88,329 Meta video ads (January 1 to June 30, 2026) found an average hook rate of 25.44%, an average across ads.

Hook rate is 3-second video plays divided by impressions. By simple arithmetic (100% minus 25.44%), about three in four impressions never reach a 3-second play, on average across ads.

That is an inference, and the limits matter. Both studies are from 2026 and are published by businesses in this market. They measure different things. Biddy's brands each spent at least $50,000, so smaller accounts may differ. Still, a script that holds its offer and call to action until seconds 25 to 30 spends its most important lines where the fewest people are, so the claim is best put first. Whether a stronger opening also lifts conversions is a separate question, covered in Meta Hook Testing: Hook Signals vs. Conversion Data.

A template is a hypothesis, not a result: no script format has been shown to beat another without a controlled test.

A Facebook ad script should pass six checks before filming: four seconds, word count, one claim, personal attributes, testimonials and substantiation. Each has a pass and a fail.

Does the ad say who it is for and what it offers in four seconds?

Watch only the first four seconds, muted, with captions. Pass: you can say who the ad is for and what it offers. Fail: you see a logo, a greeting or a question with no claim.

Does the script fit the video length?

Count spoken words per beat against seconds × 2.5, then time a read-aloud. Pass: it fits the video length at natural pace. Fail: you must speed up to fit.

Does it make one claim and ask for one thing?

Pass: one claim and one call to action. Fail: two claims or two asks. This is a recommendation, and it keeps a test readable.

Does any line imply something about the viewer's personal attributes?

Read every line that addresses "you". Pass: none states or implies the viewer's health, age, religion, finances or another protected trait. Meta's advertising standards (page dated June 26, 2024) say ads "must not contain content that asserts or implies personal attributes" and list "Depression getting you down? Get help now." as a violation. Fail: any such line.

Is every testimonial real and disclosed?

If a customer speaks, pass means they are a real customer and any material connection is disclosed clearly. Pass also means an unusual result comes with what people can generally expect, unless you can show it is typical. The FTC covers this in its endorsement guides FAQ. The FTC's final rule on fake reviews and testimonials, announced August 14, 2024 and in effect since October 21, 2024, bans fake and AI-generated testimonials. Fail: an invented customer or an undisclosed paid endorser.

Is every claim backed before filming?

Pass: each claim has its proof on file before filming. The FTC FAQ states that an endorsement cannot be used to make a claim the marketer could not legally make. Fail: the proof is left to be found after filming.

Each term names a different document.

• Ad copy: the text around the ad, meaning primary text, headline and description.
• Creative brief: the document that fixes what a test is meant to prove, including the one variable.
• VSL script: the script for a video sales letter, a long sales video.
• Marketing API script: code that automates account tasks. It is a developer topic.
• Transcript: the words of an existing ad, not a plan for a new one.

A full line-by-line script locks delivery together with the idea, so when results arrive you cannot tell which one won. That is why a brief, such as the Ad Creative Brief Template for Meta Ads, Built Around One Test, writes hooks as intent rather than lines. Choosing the angle belongs there. Creator scripts, written for user-generated content (UGC) ads, have their own costs and testing rules in UGC Ads: What 10 Videos Cost and How to Test Them.

At Deepsolv, the script comes after the decision about what to test, and Deepsolv supplies that decision. Its creative intelligence platform combines ad-performance data, competitor activity, customer signals and past ad learnings into ranked weekly creative test plans and execution-ready creative briefs for Meta advertising teams. The writer or creator turns the brief into the script, then the six checks above apply.