A video hook is written by describing the intended audience to an AI tool first, stating the action the video should produce, and then asking specifically for three to five word phrases. The length constraint is the point: a short phrase reads at a glance while someone is scrolling. The opening seconds of the video then have to deliver on whatever the phrase promised.

What Is a Video Hook?

A video hook is the short phrase that appears at the very start of a video, or alongside its preview, whose only job is to earn the next few seconds of attention. It differs from a title in that it is written for a viewer who has not decided to watch yet, so it must work as a fragment rather than as a description.

In Dubb the hook usually shows up in two places at once: as text on screen in the opening seconds of the recording, and inside the animated preview that appears in the message you send. Dubb Agent, reachable from Dubb Studio or directly at ai.dubb.com, is where I generate the candidates, though any capable AI tool will do the same job if you prompt it properly.

The Elevator Pitch Is Now a Button Press

Social media and sales have collapsed into each other, and the practical consequence is that nobody gives you a window any more.

The elevator pitch used to be the benchmark for brevity. You had the length of a lift ride to make your case. That is now generous. What you actually have is the time it takes someone to press the button, because they are scrolling, they are looking for an answer, and they will keep scrolling unless something stops them.

So the first problem is not what your video says. It is whether the video gets opened at all. That is a separate skill from making a good video, and most people never work on it, which is why so many perfectly good recordings go unwatched.

Everything that follows is about that one moment.

Why Three to Five Words

When I ask an AI for video hooks, I ask for three to five words. Not a sentence, not a headline, a phrase.

Three reasons that constraint does real work.

It is readable at a glance. Someone scrolling is not reading, they are scanning. A phrase short enough to take in without focusing is the only thing that survives that.

It forces a point. Given a sentence, an AI will hedge, qualify, and add adjectives. Given four words, it has to pick the single most interesting thing and lead with it. The constraint does the editing that you would otherwise have to do.

It fits where hooks actually live. On-screen text in a vertical video, an email subject line before mobile truncation, the first spoken line of a recording. All three punish length.

A useful side effect is that a bad three-word hook is obviously bad. A bad sentence can read as merely bland, and bland survives review. Four words with nothing in them cannot hide.

Start With Your ICP, Not With the Hook

Here is the step almost everybody skips, and skipping it is why AI-generated hooks usually come back useless.

If you open an AI tool and ask for video hooks, it has no idea who you are talking to. What it produces will be generic, because generic is the only correct answer to a question with no audience in it. You will read the output, decide AI is not good at this, and go back to writing hooks yourself badly.

So tell it about your people first. Your ideal client profile, described properly: who they are, what they do, what they are struggling with, what they have probably already tried, what language they use about their own problem. The more specific that description, the more specific the phrases that come back.

If you have never written an ICP down, that is worth doing on its own terms and we have a guide to building an ideal customer profile that covers it. Once it exists, you paste it into every prompt like this one for the rest of the year.

The second thing to state is the action. What should the person do after watching: book time in your calendar, visit a page, download a document, reply to you. A hook written without a destination in mind is a hook that entertains and converts nothing.

The Prompt

The structure is four parts, in this order. Audience, offer, action, format.

That last instruction is the one I would not drop. Asking for the follow-up sentence alongside each hook does two things: it exposes the phrases that sound clever but cannot be delivered on, and it hands you the opening line of the video at the same time.

In Dubb Agent, this goes in as a prompt like any other and comes back as a list you can work from. The same prompt works in whichever tool you already use.

Judging What Comes Back

You will get twenty candidate video hooks back. Most will not be usable, and that is the expected outcome rather than a failure. Ask for twenty so you can keep three.

What I look for, in order.

The truth row is not a formality. An AI asked for compelling hooks will happily produce a specific percentage or a timeframe it has no basis for, and if you put an invented claim on screen you now own it. Cut anything you cannot substantiate, and treat guarantees with particular suspicion.

Where the Hook Actually Goes

A hook is not one asset. The same phrase does four jobs, and knowing which one you are writing for changes what survives editing.

As text on screen. Put it up in the opening seconds of the recording, big enough to read at a glance. This is the version that has to work with no sound, because a feed plays muted.

As the subject line. If you are sending by email, the hook goes after the word video. We covered why that ordering matters in the post on whether cold emails with video go to spam, and the short version is that leading with the word video interrupts the scan while the hook supplies the reason.

As the first thing you say. Not your name. Not the weather. The hook, spoken, in the first breath.

As the animated preview. Whatever is in the opening seconds becomes the moving thumbnail in the message you send, which is usually the only thing the recipient sees before deciding. That is why the on-screen text version matters so much, and it is worth composing the shot deliberately rather than leaving it to chance, which is the argument in our post on framing the webcam bubble.

One phrase, four placements, written once.

Delivering On the Hook

This is the half that gets ignored, and it is the half that decides whether the hook was worth anything.

A hook is a promise. If the first ten seconds after it do not pay the promise off, you have not earned attention, you have borrowed it and defaulted. The viewer's reaction is not neutral disappointment either. It is the specific irritation of having been tricked, and it is expensive with someone you wanted a relationship with.

So the opening of the video has to connect to the phrase directly. Say the hook, then immediately say the thing the hook implied. If your phrase named a problem, name the cause. If it named a result, say who got it. If it asked a question, answer it before you do anything else.

This is why the prompt asks for the follow-up sentence next to each phrase. Not because you have to use the sentence the AI wrote, but because a hook that has no plausible next line is a hook you should not use.

Warm, Cold, and Referral Hooks

Video hooks work across all three contexts, and the reason is worth understanding: attention is scarce whether or not somebody likes you.

Cold. The hook is carrying everything, so specificity matters most. The phrase has to prove you know something about their situation before they will grant you the next second.

Warm. They know you, so the hook is not establishing credibility. It is telling them why this video is different from the last one you sent. The failure mode here is a generic hook that reads as a mailshot from someone who used to be a person.

Referral. The strongest hook available is usually the referrer's name, and no AI is going to guess it. Write these by hand.

Across all three, one habit transfers: generate hooks per segment rather than per video. Describe one ICP, get twenty phrases, and you have hooks for the next month of videos to that group.

What Not to Put in the Prompt

Worth saying plainly, because the instruction above is to describe your audience in detail and detail is exactly where this goes wrong.

Describe your ICP as a type, not as a list of your actual customers. Do not paste your CRM export, a named account's private information, deal values, contract terms, or anything a client told you in confidence into a general-purpose AI tool. Depending on your industry and your contracts, that can be a privacy or confidentiality problem quite apart from being unnecessary: an AI writing a four-word phrase gains nothing from a real name.

Check your own organisation's policy on what may go into AI tools before you build this into a routine, and if you are in a regulated field, check it twice.

AI Tools for Hook Writing Compared

Any capable model will write hooks if you prompt it the way described above. What differs is whether the tool does anything else with the result.

The honest position is that the model matters far less than the prompt. A detailed ICP in a mediocre tool beats a vague request in the best one, every time. Where a tool earns its place is in what happens after the phrases exist.

Common Mistakes and Troubleshooting

Asking for video hooks without describing the audience. The single biggest cause of useless output. No audience in, no specificity out.

Asking for a sentence instead of a phrase. You get hedged, adjective-heavy copy. Name the word count and hold it.

Accepting the first three. Ask for twenty and expect to keep three. The hit rate is meant to be low.

Using a hook you cannot pay off. The most damaging mistake here, because it costs trust rather than just attention.

Letting the AI invent a number. If a phrase contains a percentage, a timeframe, or a guarantee you cannot substantiate, delete it.

Writing a hook that needs sound. Feeds autoplay muted. If the phrase only works spoken, it is not doing the preview job.

One hook for every segment. Different ICPs stop scrolling for different reasons. Generate per segment.

Pasting confidential client data into the prompt. Describe the type, not the account.

Best Practices I Actually Follow

Write the ICP once, properly. Then reuse it in every prompt. It is the asset, not the hooks.

Always ask for the follow-up line. It filters out the undeliverable phrases and hands you the opening at the same time.

Say the hook out loud before using it. Anything that feels awkward in your mouth will read as marketing copy on screen.

Keep a running file of the ones that worked. Patterns emerge, and after a while you are prompting for variations on a form you know performs.

Put the hook on screen and say it. Both, not one. Muted viewers read it, unmuted viewers hear it.

Write referral hooks by hand. The referrer's name outperforms anything a model will produce.

Proof: Why This Actually Works

The mechanism is straightforward: the decision to watch is made before the video plays, so whatever occupies that moment is doing all the work.

Two patterns hold consistently across the people we help. The first concerns the audience description. Prompts that carry a detailed ideal client profile return phrases people actually use, while prompts that ask for hooks in the abstract return phrases that get discarded. The difference sits in the input rather than in the model, which is why swapping tools rarely fixes the problem.

The second concerns the payoff. Videos whose opening seconds connect directly to the hook hold viewers further into the recording than videos where the hook and the opening are unrelated. A hook that is not paid off does not merely fail to help. It appears to cost more attention than having no hook at all.

What I take from it is that hook writing is not a copywriting exercise. It is an audience-definition exercise with a word limit attached.

Frequently Asked Questions

What is a video hook?

A video hook is the short phrase at the very start of a video, or beside its preview, whose only job is to earn the next few seconds of attention. It is written for someone who has not decided to watch yet, so it has to work as a fragment rather than as a description of the video.

In practice the same phrase appears as text on screen in the opening seconds, as the hook in your subject line, as the first thing you say, and inside the animated preview the recipient sees before clicking.

How do I use AI to write video hooks?

Describe your ideal client profile in detail first, then state what you do for them and the one action you want the video to produce. Only then ask for the hooks, specifying three to five words each and asking for twenty of them.

Also ask the AI to write, next to each phrase, the one sentence you would have to say to pay it off. That filters out phrases you cannot deliver on and gives you the opening line of the video at the same time.

Why should a video hook be three to five words?

Because someone scrolling is scanning rather than reading, and a phrase that short can be taken in at a glance. It also fits the three places hooks actually live: on-screen text, a subject line before mobile truncation, and the first thing you say.

The constraint has a second benefit. Given a sentence, an AI hedges and adds adjectives. Given four words, it has to choose the most interesting thing and lead with it.

What makes a bad video hook?

Four things. A phrase that could have been written for any industry. A promise the video does not pay off in the first ten seconds. An invented number, timeframe, or guarantee you cannot substantiate. And anything you would not say out loud to a person.

Expect most of what an AI gives you to fail one of those tests. Ask for twenty phrases so that keeping three is a success rather than a disappointment.

Do I need a different hook for cold and warm outreach?

Yes, because the hook is doing a different job. Cold, it has to prove you understand their situation before they grant you a second, so specificity matters most. Warm, they already know you, so the hook's job is telling them why this video differs from the last one you sent.

For referrals, write the hook by hand. The referrer's name is usually the strongest phrase available and no AI tool is going to guess it.

Is it safe to describe my clients to an AI tool?

Describe your ideal client as a type rather than pasting details of real accounts. An AI writing a four-word phrase gains nothing from a real name, a deal value, or a contract term, so there is no upside to including them.

Avoid putting CRM exports or anything a client told you in confidence into a general-purpose AI tool, and check your organisation's policy on AI use before building this into a routine, particularly in regulated industries.

The Hook Comes First

The order matters more than any individual technique here. Describe the audience, name the action, ask for three to five words, get twenty, keep three, and make sure the opening seconds pay off whichever one you chose.

Do that before you record, not after. A hook bolted onto a finished video is a caption. A hook written first shapes the opening, and the opening is the only part most people will ever see.

Dubb Agent is where I run this, and it sits inside Dubb alongside the sending, so a phrase can become a video and a campaign without moving between tools. The prompt works anywhere though, and the prompt is the part that matters.

If you change one thing after reading this, write your ICP down properly. Every hook you generate for the rest of the year gets better the moment that description exists.