Runway AI Video Generator: How to Create AI Videos in 2026

Runway AI video generator tools have made video creation much easier. You do not always need a camera, a team, or advanced editing skills to create a short video. One tool that is often used for this type of work is Runway.

The Runway AI video generator lets users create videos from text prompts and images. Runway’s current Gen-4.5 supports both Text-to-Video and Image-to-Video, with video durations from 2 to 10 seconds. Official Runway Gen-4.5 Guide

In this guide, you will learn how to use Runway AI and how you can create your video.

What Is Runway AI?

Runway AI is an AI-powered platform made to generate and work with visual content. It has tools for video creation, editing, and other creative tasks.

One of Runway AI’s features is AI video generation. With Gen-4.5, you can describe the video you want by using a text prompt. You can also give an image and tell Runway AI how that image should move.

For example, you could write a prompt that describes a mountain scene with moving clouds and a slow camera movement.

If you are also interested in creating AI images with prompts, you can explore our guide to Midjourney prompts for beginners.

What Is the Runway AI Video Generator?

The Runway AI video generator turns an idea into a video.

With Text-to-Video, you describe both the scene and the movement you want. With Image-to-Video, you provide an image and describe the movement that should happen in the scene.

According to Runway’s current documentation, Gen-4.5 supports 2–10 second videos and multiple aspect ratios, including horizontal, vertical, square, and other formats.

This can be helpful for:

• YouTube content
• Social media videos
• Product demonstrations
• Marketing ideas
• Blog visuals
• Projects
• Short video concepts

How to Use Runway AI

Getting started with Runway AI is fairly simple.

1. Open Runway

First, sign in to Runway AI and open the creation interface. Runway currently provides different ways to create content, including Tools, Apps, Agent, and Workflows. Getting Started with Generative Video

For a video generation task, you can use the video generation tools.

2. Choose Gen-4.5

Select Gen-4.5 when you want to create an AI video.

The current Gen-4.5 model supports both Text-to-Video and Image-to-Video. You can select a duration between 2 and 10 seconds and choose from supported aspect ratios.

3. Write Your Prompt

This is one of the most important steps.

Try to explain what you want in direct language. Include the subject, action, environment, and camera movement when needed.

For example:

A coffee shop on a rainy evening. People sit near the windows while rain falls outside. The camera slowly moves toward the window. Natural lighting and realistic cinematic detail.

You do not need to make every prompt extremely complicated. Runway’s official Text-to-Video prompting guide recommends clearly describing both the visual elements and motion in the scene.

4. Generate the Video

After writing your prompt, select the settings and generate the video.

The first result may not always be what you imagined. That is normal with AI video generation.

Instead of starting over completely, you can change the prompt and try again.

How to Create Videos With Runway AI From an Image

Runway AI can also animate an image.

Upload an image and describe what you want to happen in the scene. For Image-to-Video, your prompt should mainly explain the movement because the image already provides much of the visual information.

For example:

The woman slowly turns toward the camera while her hair moves gently in the wind. The camera makes a slow forward movement.

This approach can be helpful when you already have a product image, illustration, photograph, or another visual that you want to turn into a video.

Runway’s Image-to-Video prompting guide recommends focusing on motion, camera movement, timing, and progression.

For more AI image prompt ideas, you can also read our guide to Midjourney prompts for beginners.

How to Write Runway AI Prompts

A good prompt does not have to be long. It just needs to explain the idea clearly.

Try to include these details:

• What is happening?
• What is moving?
• How should the camera move?
• What kind of style do you want?
• What should happen first?
• What should happen next?

For Image-to-Video, focus mainly on movement and camera action. For Text-to-Video, describe both the scene and the movement.

Runway also provides a Camera Terms, Prompts, & Examples guide with examples of camera movements and framing techniques.

Is Runway AI Good for Beginners?

Runway AI can be helpful for beginners because you can start with an idea instead of learning complex video production software.

However, obtaining a good result can require a little practice. You may need to change your prompt several times before the movement and camera behaviour match your idea.

The easiest way to learn is to begin with simple scenes.

For example, instead of asking for a complicated action scene with ten different events, start with something like:

A dog running through a park while the camera follows from behind.

Once you understand how the prompts work, you can make them more detailed.

Runway AI for Content Creators

Content creators can use Runway AI video generation to create visual clips for different types of content.

For example, a blogger could create a visual related to an article using Runway AI. A marketer could create a product concept using Runway AI. A social media creator could experiment with videos using Runway AI before producing a larger project.

For marketers who also work on search and content strategies, our guide to AI SEO Agent for Small Business may also be useful.

Runway AI also provides tools and workflows for creative tasks, so it is not limited to one type of video creation.

Tips for Better Results

Keep your first prompts simple.

Use a subject and one main action. If the scene contains many events, the result may not match what you expected.

It is also helpful to use a good-quality input image when working with Image-to-Video. Runway recommends high-quality input images without visual artifacts because problems in the source image can become more noticeable in the generated video.

When you want to control camera movement, Runway’s Camera Terms guide provides examples of terms such as pan, tilt, aerial shots, and different camera movements.

Importantly, experiment. Small changes to a prompt can produce different results.

If you create other types of AI media alongside video, ElevenLabs Studio can also be useful for AI audio and creative content.

Final Thoughts

Runway AI makes it easier to experiment with video creation without starting with traditional video production tools.

Its Gen-4.5 model currently supports both Text-to-Video and Image-to-Video, giving creators ways to turn ideas into short videos.

If you are new to AI video generation, start with a simple prompt to generate a short clip and then improve the prompt based on the result. With practice, you can create more detailed and useful videos for blogs, social media, marketing, and creative projects.