Open Google Flow, set it to 9:16 with Veo 3.1, paste the prompt below with your brand details filled in, generate four takes and keep the one where the brand text stays correct. You need Google Flow and nothing else. No reference image is required.
Fill in your brand details
The prompt has five blanks. Write your answers in a note so you can paste them in.
| Blank | What to enter | Example |
|---|---|---|
| [BRAND NAME] | Brand name in capitals. | AI SAVVY FOUNDERS |
| [LOGO] | A short description of your logo. | maroon geometric AI monogram |
| [BRAND COLOR] | Hex code for the logo. | #7A1F2B |
| [TEXT COLOR] | Hex code for the brand name lettering. | #271512 |
| [SKYLINE] | The city backdrop behind the barrier. | a tall glass tower and a hazy modern skyline |
Set up Google Flow
Set the format first so every take comes out vertical.
Open Google Flow from Google Labs and sign in with your Google account.
Click + New project and name it after your brand.
In the generation settings, set the aspect ratio to Portrait 9:16.
Choose the Veo 3.1 model.
Set outputs per prompt to 4.
Set the clip length to 6 seconds if the option is shown. If it is not, generate at 8 seconds and trim to 6.
Veo 3.1 generates at 24 fps, so the prompt has no frame rate line.
Paste the prompt and negative prompt
Copy the prompt, swap in your five blanks, then add the negative prompt.
In the Flow prompt bar, choose Text to Video.
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Click Copy on the prompt below and paste it into the prompt bar.
PromptVertical 9:16 video, 6 seconds, photorealistic, shot as a real dashcam recording from inside a car on a multi-lane city highway. Fixed windshield-level camera, only a strip of the car bonnet visible at the bottom of the frame. Overcast, dramatic cloudy sky, soft diffused daylight, slightly muted colours, natural dashcam compression and mild motion blur. [SKYLINE] sits in the distance behind a concrete barrier. A beige taxi is in the left lane. SUBJECT: A white/cream box truck with a canvas-covered cargo bed printed with "YOUR BUSINESS" in bold dark type is tipping dangerously over on its two left wheels, tilted about 45 degrees, driving ahead of the camera and about to fall. ACTION (timed): 0.0-1.8s: The tilted white truck drifts ahead, wobbling, wheels barely holding the road. Traffic flows normally around it. 1.8-2.6s: A large dark grey box truck appears at the right edge of frame, overtaking in the next lane. We see its LEFT SIDE PANEL first, showing the [LOGO] and the name "[BRAND NAME]" on the panel, then its rear doors as it pulls ahead. 2.6-3.6s: The grey truck steadies beside the tilting white truck and pushes it upright with its side. 3.6-4.4s: The white truck rocks back onto all four wheels and stabilises. 4.4-6.0s: Both trucks drive side by side away from the camera. The camera holds steady and settles on the grey truck's REAR DOORS, centered and clearly readable. BRANDING (critical): On the grey truck's rear double doors, centered horizontally, print the [LOGO] in [BRAND COLOR], about 45% of the door width, with the text "[BRAND NAME]" in two lines below it. Line 1 is larger, line 2 is smaller, in wide-tracked uppercase geometric sans-serif, in [TEXT COLOR]. The graphic sits flat on the door panel, following its perspective, with the door seams and hinges visible through it like real vinyl. The same logo appears smaller on the truck's side panel. The logo and text stay perfectly stable, sharp and unchanged for the whole video, and they never morph, flicker or change spelling. Truck detail: matte dark grey paint, slightly dusty, red tail lights, generic number plate, metal door hinges and vertical locking bars. AUDIO: ambient highway road noise, wind, a heavy diesel engine passing, tyre rumble. No music, no voiceover. Replace each blank in square brackets with your answers from Step 1.
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Add the negative prompt. If Flow has no negative prompt field, paste it at the end of the prompt on a new line that starts with Avoid:
Negative promptno text morphing, no misspelled or garbled lettering, no extra logos, no watermark, no cartoon or CGI look, no camera shake, no zoom, no cuts, no people visible, no crash or fire, no debris, no license plate blur artifacts, no warped or melting trucks, no duplicated trucks, no flickering graphics
Generate and pick the best take
Flow gives you four takes. Keep the one that passes the checklist.
Click generate and wait for the four takes.
Play each take and check it against the list below.
If none pass, click generate again. Each run gives you four fresh takes.
Download the best take at the highest resolution Flow offers.
Small lettering is the weak spot of video models. Pause on a few different frames and confirm the text looks the same in each before you approve a take.
Add the tagline (optional)
A tagline lands best in the last second, after the trucks settle.
Open your downloaded video in any editor.
Add your tagline as a text overlay from 5.0 to 6.0 seconds, centered in the lower third.
Export at 9:16 and upload.
Keep the tagline short and clear of the truck's rear doors so it does not cover your logo.
Reference
Troubleshooting
| Problem | Fix |
|---|---|
| Brand text is garbled | Generate again for four new takes. Check that the brand name in your prompt is in quotes and in capitals. |
| Rear doors leave the frame early | Add this line to the ACTION section: the camera holds on the rear doors for the last 2 seconds. |
| Truck looks warped or melts | Generate again and keep the cleanest take. |
| Two white trucks appear | Generate again. Keep no duplicated trucks in the negative prompt. |
| Clip is 8 seconds | Trim it to 6 seconds in your editor. |
Reference
FAQs
Do I need to upload my logo to Google Flow?
No. This SOP describes the logo in words inside the prompt. No reference image is needed.
Why is the brand text sometimes misspelled in the video?
Video models can garble small lettering. Generate four takes, keep the one where the text stays correct, and run the prompt again if none pass.
How long can a Google Flow clip be?
Veo 3.1 generates clips of 4, 6 or 8 seconds, so a 6-second clip is available.
Version 1.0 · September 28, 2026 · First release for Google Flow with Veo 3.1.