Platform-specific prompt formats
Kling gets motion and lighting detail, Runway gets continuity language, LTX gets short clear action beats, and ComfyUI gets workflow-friendly prompt blocks.
Free AI video prompt tool
Turn a rough video idea into a structured English prompt pack: platform-specific direction, shot script, keyframe prompts, negative prompt, and copy-ready output.
Generated output
General AI Video
Platform format
12 seconds
Target length
16:9
Composition
Prompt
General AI Video prompt. Universal prompt structure: Create a 12 seconds 16:9 video about A filmmaker places a tiny glowing city model on a desk and watches traffic lights turn on one by one. Style: cinematic realism; mood: tense but hopeful; camera: slow tracking shot. Use a clear subject, readable action, natural lighting, coherent spatial continuity, and a final frame that resolves the idea. Structure the clip around one visual job: introduce the subject, show one action or transformation, let the camera support that action, and end on a frame that communicates the concept without needing captions. Add enough concrete detail to guide any model, including subject appearance, setting, movement direction, light source, atmosphere, and what must remain consistent. Keep it portable across tools by avoiding proprietary syntax unless a platform requires it. Prepare the result as complete prompt pack.
Script
Shot 1 (3 sec): Opening frame: introduce A filmmaker places a tiny glowing city model on a desk and watches traffic lights turn on one by one with cinematic realism texture and a tense but hopeful tone. Shot 2 (3 sec): Camera begins slow tracking shot; the subject performs the first clear action while the background remains coherent. Shot 3 (3 sec): Escalate the visual beat with stronger light contrast, controlled motion, and consistent subject details. Shot 4 (3 sec): End on a memorable final frame that preserves the 16:9 composition and resolves the idea.
Keyframes
1. Keyframe 1, 16:9: A filmmaker places a tiny glowing city model on a desk and watches traffic lights turn on one by one, opening composition, cinematic realism, tense but hopeful, clean subject silhouette, detailed environment, natural lighting. 2. Keyframe 2, 16:9: mid-action moment, slow tracking shot, visible motion direction, consistent subject identity, cinematic depth, controlled highlights. 3. Keyframe 3, 16:9: final resolved frame, emotional payoff, cinematic realism, stable composition, no clutter, strong thumbnail readability.
Cleanup
low quality, blurry, warped hands, extra fingers, distorted faces, text artifacts, watermark, logo, jitter, flicker, melted objects, inconsistent anatomy, generic stock look, unclear subject, random camera shake
Audio
English voiceover: "This is the moment an ordinary idea starts moving like a finished film." Keep the delivery tense but hopeful, concise, and under the visual rhythm of the shot.
Platform
- Use this version when you are moving between multiple AI video tools. - Keep subject, action, camera, lighting, and mood in one readable paragraph. - Add tool-specific constraints before generating.
Definition
An AI video prompt generator turns a plain-language idea into production-style instructions for a video model. A useful prompt does more than name a subject. It explains what should happen, how the camera should move, what the light is doing, what the final frame should resolve to, and what visual problems the model should avoid.
VideoPromptLab is built for creators who switch between tools. Kling, Runway, LTX Video, Pika, Veo, and ComfyUI all respond to slightly different prompt structures, so the generator adapts the wording instead of giving you one generic paragraph.
Features
Kling gets motion and lighting detail, Runway gets continuity language, LTX gets short clear action beats, and ComfyUI gets workflow-friendly prompt blocks.
Generate a final video prompt, shot-by-shot script, image keyframe prompts, negative prompt, and voiceover or dialogue suggestion.
The site includes crawlable guides, examples, FAQs, internal links, sitemap, robots, and metadata for testing organic acquisition.
Workflow
Start with the subject, scene, and action. A simple idea is enough because the generator adds structure.
Pick Kling, Runway, LTX Video, Pika, Veo, ComfyUI, or a general format. Each template changes the output.
Use the final prompt, shot plan, keyframes, negative prompt, and dialogue suggestion inside your preferred tool.
Platforms
Examples
Kling AI
A founder walks through a rainy neon street while an AI assistant appears as light reflections in shop windows
Kling AI prompt: cinematic realism, slow tracking shot, realistic light behavior, rain reflections, subject motion, detailed neon street environment, tense but hopeful mood.
Runway
A matte black solar battery rotates on a clean studio plinth as warm sunrise light passes across the surface
Runway prompt: cinematic continuity, consistent product shape, controlled studio lighting, macro push-in camera movement, premium clean-tech commercial look.
LTX Video
A tiny robot chef flips one perfect pancake in a compact kitchen and celebrates with a small light blink
LTX Video prompt: one subject, one compact kitchen, one clear action, short shot, no complex transitions, playful final frame.
MVP monetization
Creator workflow upgrades
The free generator is designed for fast prompt drafting. Advanced packs, saved projects, platform presets, CSV export, brand voice, prompt history, and team workspaces are natural upgrade paths once real usage data shows which workflows matter most.
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Useful for storyboarding, editing, campaign planning, and publishing generated clips.
FAQ
Yes. The MVP uses local templates in your browser and does not require a paid AI API. A future Pro plan may add batch generation, saved prompt packs, exports, and advanced styles.
Not in this MVP. The prompt engine runs from local TypeScript templates, so it is fast, predictable, and easy to inspect. The code is structured so an API route can be added later.
The tool includes templates for Kling AI, Runway, LTX Video, Pika, Veo, ComfyUI, and a general AI video format.
You can use the generated text as a starting point, but always review the terms of the AI video platform you use and check rights for any uploaded images, logos, voices, or characters.