Big Idea

The argument in one line.

Google Flow's Agent turns one plain-English brief into consistent AI video ads by making reference pictures first, then clips, for a few dozen credits and no hand-written prompts.

Who This Is For

Read if. Skip if.

READ IF YOU ARE…

You make UGC-style ads or product adverts and the slow part is writing every video prompt yourself.
You have never opened Google Flow and want a start-to-finish example you can copy with a brief of your own.
You want to know what an AI video ad actually costs in credits before you commit to a workflow.

SKIP IF…

You already control every shot with long detailed prompts and want frame-exact results, since the Agent trades control for speed.
You need a feature-length or multi-scene film, because this covers one 20-second, two-clip reel.

TL;DR

The full version, fast.

Google Flow's Agent lets you describe an ad in normal words and it writes the prompts, generates reference pictures, then renders the clips. Turn the Agent on, set 9:16, one clip at a time and Confirm Before Generating to Always so it asks before spending credits. Write who she is, the outfit and what happens in each clip. Pictures are free, so the Agent makes those first to keep both clips consistent. A fashion reel cost 30 credits for two clips plus 15 to fix a mismatch, about 45 credits or 22p. Watch every clip fully, because each fix regenerates the whole clip.

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Chapters

Where the time goes.

00:00 – 00:19

01 · What we're making

Promise: make your own consistent adverts step by step in Google Flow.

00:19 – 00:43

02 · New project in Google Flow

Create a project, tour the sidebar and learn that pictures are free while video costs credits.

00:43 – 01:22

03 · Switching on the Agent and its settings

Enable Agent, keep Confirm Before Generating on Always, set 9:16, one clip each time, Omni Flash.

01:22 – 02:00

04 · Writing the brief

Describe the woman, the outfit piece by piece and what happens in each of two clips, and ask for pictures first.

02:00 – 02:34

05 · It writes the prompts and makes the pictures

The Agent produces two free pictures, then asks approval for two clips at 30 credits.

02:34 – 03:06

06 · The first result

Same woman and outfit in both clips, she talks unprompted, and the prompts the Agent wrote are short.

03:06 – 04:05

07 · Spotting the mistake and fixing it with words

She says hat while holding the blouse. A plain-language correction regenerates clip one for 15 credits.

04:05 – 04:25

08 · Joining the two clips

Use the plus at the end of the timeline, Add Clip, Add Media, then download.

04:25 – 04:38

09 · What it cost

Pictures free, clips 30 credits, fix 15, total 45 credits or about 22 pence.

04:38 – 05:17

10 · The Agent versus detailed prompts

A side-by-side of the Agent reel and a detailed-prompt reel, and when you would pick each.

05:17 – 05:29

11 · Get every prompt

Ask in the comments for the brief and the detailed prompts.

Atomic Insights

Lines worth screenshotting.

In Google Flow, pictures cost nothing and only video spends credits, so generating reference images first is free insurance for consistency.
Leaving Confirm Before Generating on Always makes the Agent ask before it spends anything, and pressing Always approve once turns that safety off.
Writing a brief the way you would explain it to a friend is enough for the Agent to produce its own, much shorter, working prompts.
Making the character and the outfit as pictures before any video is what keeps the same woman and the same clothes across both clips.
The Agent invented dialogue nobody asked for, and it felt natural, which is a reason to let it improvise on casual UGC styles.
A mismatch between what the character says and holds is fixed by describing the error in words, not by rewriting the prompt.
Every fix generates a brand new clip, so small unrelated details such as the room can change between versions.
Two 10-second clips cost 30 credits and one redo cost 15, so a full 20-second reel with a fix came to 45 credits, about 22 pence.
Joining clips in Flow takes a plus at the end of the timeline, Add Clip, then Add Media, and one download gives a postable reel.
The Agent suits simple ads where you do not want to decide every detail, while detailed prompts win when the room and every beat must be exact.

Takeaway

Describe the ad, let the Agent do the prompting

WHAT TO LEARN

Flow's Agent is a cheap, fast way to produce consistent short ads if you brief it plainly, keep spending approvals on, and review every clip.

Pictures are free in Flow and only video costs credits, so have the Agent generate the person and outfit images first to anchor consistency.
Set Confirm Before Generating to Always and avoid Always approve, so the Agent shows the credit cost and waits for you each time.
Write the brief in three parts: who she is, the outfit piece by piece with colors, and what happens in each clip.
Fix errors by describing them in plain words, such as what she should say for each piece she holds, rather than rewriting prompts.
Each fix creates a brand new clip that can alter other details, so rewatch the entire result rather than only the part you changed.
Budget roughly 15 credits per 10-second clip, so a two-clip reel with one redo costs about 45 credits, or around 22 pence.
Choose the Agent for simple casual ads and detailed prompts when the room, shots and sequence must be exactly as you planned.

Glossary

Terms worth knowing.

Flow Agent: An assistant inside Google Flow that takes a plain-English brief, writes its own prompts and generates the pictures and video clips for you.
Confirm Before Generating: An Agent setting that makes it show an approval card with the credit cost before it makes any video.
UGC ad: An advert styled like user-generated content, usually a person talking or showing a product to the camera in a casual, phone-shot look.
Credits: The currency Flow charges for video generation. Images are free, and a 10-second clip in this video cost 15 credits.

Resources

Things they pointed at.

00:00productGoogle Flow ↗

00:00linkkie.ai ↗

00:00productvidIQ ↗

00:00channelNova Autonomous ↗

Quotables

Lines you could clip.

00:56

“You tell it what you want in normal words and it works out the pictures, the prompts, and the clips for you.”

One sentence that explains the whole product.→ TikTok hook↗ Tweet quote

04:25

“The pictures were free, the two clips were 30 credits, and the fix was 15. So 45 credits in total, which for me came to roughly 22 pence.”

Concrete cost breakdown that answers the first question every viewer has.→ IG reel cold open↗ Tweet quote

03:45

“Every fix makes a brand new clip, so watch it all the way through, because it can change small things you never asked about.”

A practical warning that stands alone.→ newsletter pull-quote↗ Tweet quote

The Script

Word for word.

Read-along

Don't just watch it. Burn it in.

See every word as it's spoken — crank it to 2× and still catch all of it. The same dual-channel trick behind Amazon's Kindle + Audible.

Google Flow has now made adverts massively simpler to make. Every advert on your screen right now was made with it in a fraction of the time it used to take me, and it keeps everything consistent shot after shot. By the end of this video, I'll show you exactly how to make your own step by step, and I promise it's easier than you think.

To start, let's log into Google Flow and click on New Project. Flow names the project after today's date, and you can rename it whenever you like. Down the left are your media, your characters, and your scenes.

And this box at the bottom is where everything happens. Your credits sit up here in the account menu, and pictures cost you nothing, so you only spend credits on video. Now here's the part that makes this so much easier.

In the box, there's a button that says Agent, so click it to switch it on. The agent is Flo's assistant. You tell it what you want in normal words.

and it works out the pictures, the prompts, and the clips for you. Before we use it, click the little slider icon to open its settings. Leave Confirm Before Generating on Always, so it asks you before it spends any credits.

For pictures, I set it to make one image each time, and for video, I pick 9 by 16, the shape of a phone, one clip each time, on OmniFlash. Then click Save. Today we're making a 20 -second get ready with me reel for a fashion brand.

I just write what I want, the way I'd explain it to a friend. First, who she is, so her hair, her makeup, what she's wearing, and the room she's in. Then the outfit, piece by piece, with the colors.

Then what happens in each clip. In clip one, she holds up each piece to the camera. And in clip two, she's wearing the whole outfit and turns around to show it off.

And at the end, I ask it to make pictures of her and of the outfit first, so both clips match my whole brief is on your screen and if you want it as text just ask in the comments and i'll send it over press send and watch what happens it writes its own prompts and makes two pictures her in the dressing room and the whole outfit on a mannequin those pictures cost nothing then because we left it on always a card pops up on the right it says it wants to make two video clips and that it'll cost 30 credits Approve makes them and reject stops it.

The middle one, always approve, lets it spend without asking you again, so I'd leave that one alone. I press approve and about a minute later both clips are ready. And look at this.

Hi everyone, I'm showing off this outfit. It's the same woman in both clips with the same pieces and she even talks to the camera, which I never asked for. The room changes a bit in clip two, but her face and the outfit hold.

If you click on a clip, you can see the prompt the agent wrote for itself on the right. So it writes every prompt for you, and they're much shorter than you'd expect. Quick pause here.

If you're enjoying the video so far, subscribing would mean a lot to us. Thank you. Now watch clip one closely.

And here are the belt and hat. Hope you like it. She says, here are the belt and hat.

But by the time she says hat, she's holding the blouse again. so it shows up twice. Fixing that is easy.

You just tell the agent what's wrong, in normal words. I wrote what was wrong and asked for each thing she says to match what she's holding, one piece at a time with no repeats. It asks for 15 credits to make clip one again.

I approve. And a minute later, it's back. First, the blouse.

Then the skirt. The belt. The cap.

And the bag. Now she goes through the blouse, the skirt, the belt, the cap, and the bag, holding up each piece as she goes. One tip here.

Every fix makes a brand new clip, so watch it all the way through, because it can change small things you never asked about. Now, let's turn the two clips into one video. Open the first clip, and you'll see a little plus at the end of its timeline.

Click it, choose Add Clip, and pick the second one. Click Add Media, and Flow joins them into a scene. Then press the Download button, and you get the whole reel as one video, ready to post.

So what did it cost? The pictures were free, the two clips were 30 credits, and the fix was 15. So 45 credits in total, which for me came to roughly 22 pence.

For comparison, I made another version of the same reel, this time with detailed prompts. On the right, She shows each piece in its own shot, then ties her hair up, sprays perfume, and clips on her earrings.

On the left, the agent's version is simpler, but she talks to you, and that feels really natural. The agent helps a lot if you want to keep things simple, and you don't want to think about every single detail, because it does all of that for you. But if you want absolute control, detailed prompts like this one let you decide everything, like that room we talked about.

so it ends up exactly how you want it. If you'd like any of the prompts from today, the detailed ones or the ones on your screen, just ask in the comments and I'll send them over. Thanks for watching and I'll see you on the next one.

The Hook

The bait, then the rug-pull.

Every advert shown in the opening was made in Google Flow, and the promise is a step-by-step walk from an empty project to a finished 20-second reel that is easier than it looks.

Frameworks