Promptslove

Runway Gen-4 Video Prompt Generator

Generate optimized video prompts for Runway's Gen-4. Narrative consistency, visual style direction & smooth natural motion for cinematic AI video.

Describe the main visual scene — subjects, environment, mood, and key visual details

Generated Prompt

Fill in the form and click "Generate" to create an optimized Runway Gen-4 video prompt.

Tip: Describe the motion and temporal progression of your scene. Think in terms of "what happens over time" rather than a static description.

Runway Gen-4 Tips

  • • Lead with visual style — Gen-4 responds strongly to aesthetic direction
  • • Gen-4 excels at maintaining visual coherence across frames
  • • Think about frame composition: foreground, midground, background
  • • Keep prompts focused and well-structured — avoid conflicting instructions

Runway Gen-4 Prompt Templates

Copy-ready shot briefs built around what this model actually rewards. Swap the [BRACKETED] parts for your own scene, then paste straight into the tool.

Gen-4 Reference Shot

Character

Runway Gen-4 holds character and world consistency from references.

[CHARACTER — matching the supplied reference] [ACTION] in [ENVIRONMENT].

Keep the character's face, hair, build and wardrobe consistent with the reference across every frame.

Camera: [MOVEMENT]. Lighting: [SETUP]. Motion: [WHAT MOVES AND HOW]. Style: [GRADE].

Camera Move Study

Cinematic

Runway responds well to precise camera language.

[SCENE DESCRIPTION].

Camera: [PRECISE MOVE — e.g. a slow crane down from a high wide to a low medium], on a [LENS], at [SPEED]. The move is smooth and continuous with no easing at the ends.

Subject stays [FRAMING BEHAVIOUR, e.g. centred throughout the move]. Lighting: [SETUP]. Grade: [GRADE].

Image-to-Video

Technique

Animating a still with tight motion boundaries.

Animate the supplied image.

Moves: [SPECIFIC ELEMENTS AND HOW MUCH].
Does not move: [WHAT STAYS LOCKED].
Camera: [SUBTLE MOVE OR STATIC].

Hold the image's composition, palette and subject appearance exactly. No new elements enter frame.

VFX Element

VFX

Isolated effect elements for compositing.

[EFFECT — e.g. thick smoke billowing upward and dissipating] against a plain [BLACK/GREEN] background, nothing else in frame.

[EFFECT BEHAVIOUR — density, speed, direction, how it dissipates]. Lit from [DIRECTION] with [QUALITY].

Camera locked off. Clean edges suitable for compositing. Duration: [SECONDS] seconds.

Style Transfer Sequence

Stylised

Restyle while preserving the underlying motion.

Restyle the supplied video as [TARGET STYLE, e.g. hand-painted gouache with visible brushwork].

Preserve the original motion, timing, framing and composition exactly — only the rendering style changes.

Palette: [COLOURS]. Style consistency must hold across every frame with no flicker between frames.

Product Motion Loop

Commercial

Seamless looping product motion.

[PRODUCT] on [SURFACE], rotating slowly and continuously so the last frame matches the first exactly for a seamless loop.

[MATERIAL DETAIL] catching the light as it turns. Lighting: [SETUP], fixed. Background: [PLAIN BACKDROP], fixed.

Camera locked off. Constant rotation speed, no easing. Duration: [SECONDS] seconds.

Frequently Asked Questions

What is Runway Gen-4?

Runway Gen-4 is Runway's latest AI video generation model. It excels at narrative consistency, smooth natural motion, and visual coherence. It supports 5 and 10 second clips at various aspect ratios with optional 4K upscaling.

What makes Gen-4 different?

Gen-4 stands out with its strong narrative consistency and visual coherence across frames. It responds particularly well to style direction and produces smooth, natural motion when properly guided.

How does this prompt generator help?

You provide structured scene details and our AI applies Runway-specific best practices — visual style first, narrative consistency, composition — to generate an optimized prompt.

Is this tool free?

Yes! You get 1 free prompt generation per day. For unlimited access, sign up for a Promptslove membership.

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