AI Video Prompt Generator: Free Tool, First-Try Prompts
By the AI Tool Scout team, who produce AI-video Shorts daily — see About AI Tool Scout for how we work and test.
Disclosure: This post contains no affiliate links. The generator is our own tool and is free to use; if that ever changes, we will update this disclosure and say so here.
The AI video prompt generator on this page exists because every AI video tool opens on the same empty box — and what separates a usable first clip from a fifth retake is rarely the model. It is the prompt.
Order, scope, and exclusions: a good prompt leads with the camera, gives the clip one job, and lists what to leave out. The generator applies that structure for you, in the order the models read best.
→ Open the AI Video Prompt Generator — free, no sign-up, runs in your browser.
What the AI video prompt generator does
You fill in a short form: platform, subject and main action, setting, shot type, camera movement, lighting and mood, style, duration, and aspect ratio. A dialogue line is optional. The tool assembles your answers into two copy-ready blocks.
The main prompt comes out structured the way experienced creators write by hand: camera first, then the action, the setting, the light, and a format line matched to the platform you picked — Google Flow / Veo, Runway, Kling AI, Luma Dream Machine, Pika, or any tool.
The second block is the negative prompt: subtitles, captions, logos, watermarks, readable text, distorted hands, extra fingers, morphing faces, flicker. Paste it into your tool's negative prompt field, or at the end of the main prompt if it has none.
Who it is for
It is for anyone staring at that empty box: beginners who do not yet know what a good prompt looks like, and working creators who are tired of retyping the same structure for every scene in a Shorts workflow.
It is also for anyone comparing tools. The same prompt, pasted into each tool's free route, is the fairest test there is — one variable, every model, your hardest shot. That is how we built our guide to the best AI video generators in 2026.
And if you arrived here because your generator shut down — it happens; Sora did — the prompts you build here carry across every replacement in our list of Sora alternatives that still work in 2026.
How to use it
- Pick your platform and describe your subject and its main action. This is the one field the generator cannot invent for you — a clear subject doing one clear thing.
- Choose the shot type, camera movement, lighting, style, duration, and aspect ratio — or tap a preset to fill everything in at once.
- Click Generate prompt, then copy the main prompt and the negative prompt with the copy buttons.
- Paste both into your AI video tool and generate. For a variation, adjust one detail at a time — the same discipline our guides recommend for retakes.
The method behind it: first-take prompts
The generator is not a random sentence shuffler. It encodes the prompt method this site uses in daily Shorts production and writes about in its guides: structure first, decoration last.
Camera first
The opening words of a prompt carry the most weight, so the generator leads with the shot type and camera movement, not the subject. A prompt that starts with the camera reads like direction; one that starts with the subject reads like a wish.
One main action
A five-to-ten-second clip can do one thing well. Give it a second job and both usually come out muddy, so the form asks for one main action — if your scene needs two, generate two clips back to back.
Natural movement, short text
Words like dangling, floating, sliding, and swaying gently tell the model how things should move. The generator keeps prompts to a few clear sentences, because every extra detail competes with the ones that matter.
A negative prompt, every time
The most common defects — subtitles appearing uninvited, warped hands, flicker — are easier to exclude than to fix afterwards. The negative list ships with every generation, so leaving it out is a choice, not an oversight.
Three ready-made starting points
Three presets fill the whole form in one tap. Each is a working pattern, not a demo — edit any field after tapping, and keep what fits your project.
Cinematic nature
A drone flyover of powerful ocean waves crashing against dark rocky cliffs at dawn, golden-hour light, cinematic film style, ten seconds in 16:9, written for Google Flow / Veo. Use it for openers, backgrounds, and channel scenery.
Product ad
A matte black wireless headphone rotating slowly on a white pedestal in a bright studio, orbit camera, clean studio light, eight seconds for Runway. Swap in your own product and keep the structure exactly as it is.
UGC review style
A creator holds a small skincare jar up to the camera and delivers one spoken line, handheld and vertical — 9:16 for Shorts and Reels, in a bright bathroom mirror setup. The preset's line is "Okay, this actually works." Rewrite the line; keep the format.
FAQ
Is it really free?
Yes — free to use as often as you like, with no sign-up and no account. It runs entirely in your browser, so nothing you type is sent anywhere.
Which tools do the prompts work with?
Any text-to-video tool. The prompts are plain, structured English; the platform picker only adjusts the format line for Flow / Veo, Runway, Kling AI, Luma Dream Machine, and Pika, and the Any tool option keeps the prompt fully generic.
Can I use the generated prompts commercially?
The prompts are yours, including for commercial projects. Whether the videos you make with them can be used commercially depends on your plan in the tool you generate with — check its current terms before monetized work.
What if my clip still comes out wrong?
Change one detail and regenerate — one variable per retry is the fastest way to learn what a model misread. If the scene itself has two big actions, no prompt will save it; split it into two clips.
Conclusion
An AI video prompt generator cannot make a bad idea good, and it cannot replace testing a tool with your own hardest shot. What it removes is the blank box and the fifth retake — the structure is handled, so your credits go on the creative calls only.
Pair it with our guide to the best free AI video generators in 2026 if you are testing on free credits: draft here, generate there, and count what each accepted clip really costs.
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