How to write a YouTube hook that holds the first 30 seconds
YouTube measures how many viewers are still watching at 30 seconds. Here is how to write an opening that earns that time, with a hook checker to test yours.
By Ebenezer Don6 min read
YouTube Studio has a number for your opening. Open any video's analytics, go to the audience retention report, and look for Intro: the share of viewers still watching after the first 30 seconds. YouTube's own help page says a high figure usually means two things. The opening matched what the title and thumbnail promised, and it kept people interested.
That is the whole job of a hook. Not a trick, not a jump cut, not a loud sound. A hook is the first few lines of your script, and their job is to confirm the click and give the viewer a reason to stay for the next minute.
This guide is about writing those lines. There is a checker further down where you can test your own.
What a hook has to do in 30 seconds
A viewer arriving from a thumbnail has a question in their head. "Is this the video I thought it was?" Every second you spend on anything else, they are deciding whether to leave.
So a working opening does three things, in roughly this order:
- Confirms the click. It says, early and plainly, that this video is about what the title said.
- Raises the stakes. It makes the viewer feel what they lose by leaving: a mistake they might be making, a result they want, a question they now need answered.
- Sets the path. It tells them, in a sentence, how the video will get them there, so the next minute feels like progress and not a detour.
That can take 10 seconds or 30. It rarely needs more.
The four openings that cost you viewers
Most weak intros fail in the same few ways. If you recognise your last script here, that is normal. They are habits from talking to people who already chose to listen.
The greeting. "Hey everyone, welcome back to the channel." The viewer clicked a video about fixing their sleep schedule. A greeting tells them nothing about that. If you like a sign-on, move it after the hook, or fold it into one breath with the point.
The preview of the video. "In this video I'm going to talk about three ways to..." This is the title read out loud. It confirms the click but raises no stakes. Turn the preview into a problem: not "three ways to fix your sleep" but "you can fix your sleep in a week, and the first change is the opposite of what most people try."
The ask before the value. "Before we start, make sure to like and subscribe." You are asking for something before giving anything. Ask after you have delivered a moment worth rewarding.
The backstory. "So a few years ago I started getting into..." Context matters, but the viewer has not decided to care yet. Start with the moment the story turns, then go back.
Five hook shapes that work
You do not need a formula, but it helps to know the shapes good openings take. Most strong hooks are one of these.
The result first
Show or state the outcome, then promise the how.
This kitchen cost 4,000 pounds to redo. The quote we got was 19,000. Here is everything we did ourselves, and the two jobs we should have paid for.
The number does the work. It is specific, it is surprising, and the second sentence tells the viewer where the video goes.
The mistake
Name a mistake the viewer is probably making. People will stay to find out whether they are making it.
If you edit your videos before you watch them back once at full speed, you are cutting the wrong things.
The question they already have
Say the question in their words, then commit to answering it.
Can you actually learn to code in three months? I tried it with a full-time job, and the answer is yes, but not the way the bootcamps say.
The tension
Two things that should not both be true.
This channel has 400 videos and 2,000 subscribers. The one with 12 videos next to it has 90,000. The difference is not quality.
The demonstration
For anything visual, the hook is often just the thing working. Start on the finished shot, the working trick, the before and after. Then your first line explains what they are looking at.
Test your opening
Type the first two or three sentences of your next video. The prompter reads them at a natural speaking pace, so you hear how long they take out loud, and the checks flag the habits above.
23 words, about 9 s out loud
5 of 6 checks
- Starts on the point, no warm-up.
- Gives before it asks.
- Has a number or a concrete detail.
- Opens a question the viewer wants answered.
- Never says "you". Put the viewer in the first lines.
- The first sentence is short enough to land fast.
These are rules of thumb, not laws. A cooking channel can open on a greeting if the greeting is over a sizzling pan. A comedy sketch does not need a number. Use the checks to notice what you are doing, then decide.
Write the hook last
The hook is easier to write once the rest of the script exists. When you write it first, you are promising things you have not worked out yet. When you write it last, you know exactly what the video delivers, which moment is the most surprising, and which line is the strongest. Very often the best hook is a line from the middle of your own script, moved to the top.
A useful routine:
- Write the body of the script.
- Underline the single most surprising fact, result or claim in it.
- Write three different openings that lead with it, each in a different shape from the list above.
- Read all three out loud. Keep the one that sounds like you talking, not like an ad.
Match the thumbnail, then go past it
YouTube's advice when the Intro figure is low is to check that your title and thumbnail reflect the video. The opposite mistake is just as common: an opening that repeats the thumbnail exactly and adds nothing. The viewer already saw the thumbnail. Confirm it in a few words and move on to what they do not know yet.
A simple check: say your title, then your first line. If the first line could be the title, it is a repeat. If it says something new that makes the title more interesting, it is a hook.
Deliver it like you mean it
The words are half of it. The other half is how the first lines sound. Hooks lose people when the delivery is slower and flatter than the rest of the video, usually because the creator is reading cold, warming up, or looking away to check notes.
Three things help:
- Record the hook last too. You will be warmed up and you will know the material.
- Keep your eyes on the lens. Glancing down at notes in the first ten seconds reads as hesitation. A teleprompter close to the camera fixes this. The guide on reading a teleprompter without looking like you are reading covers the rest.
- Do three takes of the first 30 seconds. It is the most watched part of every video. It deserves more takes than the middle.
A last check before you publish
Watch your own first 30 seconds as if you were a stranger who clicked on the thumbnail. If at any point you would think "get to it", that is where people leave. Cut there. Then look at the Intro figure a few days after publishing and compare it with your other recent videos of a similar length. One video tells you little. Ten tell you which openings your audience stays for.