> For the complete documentation index, see [llms.txt](https://docs.pletor.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pletor.ai/models/video-models/previous-generation-video-models/runway-gen4.md).

# Runway Gen4

## TL;DR

Top choice for creating professional-quality videos with consistent subjects and movie-like camera work. Perfect when visual consistency matters most.

### Strengths for marketers

* **Character consistency**: Maintains the same person, product, or mascot across different scenes and lighting conditions.
* **Product consistency**: Place any product in multiple environments while keeping it visually identical.
* **Cinematic quality**: Professional camera movements and scene control that rivals traditional filmmaking.

### **Ideal use cases**

Scenarios where you have a specific visual you want to animate consistently:

* **Product videos**: Show a product in various lifestyle settings with perfect consistency.
* **Campaign variations**: Generate multiple scenarios with the same products for performance testing.
* **Mascot animation**: Create consistent spokespersons or mascots across multiple video assets.

### Weaknesses

* Requires a starting image (can't generate from text alone)
* Struggles with overly complex multi-element scenes
* Occasional visual glitches or hallucinations
* More expensive than simpler animation models

***

## How to use effectively

Gen-4 thrives on simplicity and focus. Start simple and build up gradually:

1. **Basic motion**: "The subject turns slowly"
2. **Add camera**: "The subject turns slowly as camera circles around"
3. **Add environment**: "The subject turns slowly as camera circles, dust swirling"
4. **Add style**: "The subject turns slowly as camera circles, dust swirling, cinematic"

**Pro tips:**

* Focus only on motion - let the image handle the visuals
* Use "the subject" or "the product" instead of specific names
* Say what should happen, never what shouldn't
* Add one new element at a time when iterating

### Example prompts

* "The subject turns slowly toward the camera and smiles"
* "The product rotates gently while the camera circles around it"
* "She raises her hand and waves at the camera"
* "The camera slowly pulls back to reveal the full scene"
* "The person on the left walks forward. The person on the right waves."

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## Model parameters

### **Inputs accepted**

* Text + 1 Reference Image (starting frame)

### Output characteristics

* **Default Resolution:** 1080p
* **Duration options**: 5s or 10s
* **Available Aspect Ratios:** 1:1, 16:9, 9:16, 3:4, 4:3