Replay AI: A Step-by-Step Guide to Converting UI Prototypes in Video to Production (2026)

TL;DR: Replay AI converts UI prototype videos into production-ready code, saving developers time and bridging the gap between design and implementation.

Stop designing in Figma and then manually translating that design into code. It's 2026. We have better tools. The future of UI development is here, and it's driven by video. Replay AI leverages the power of Gemini to reconstruct functional UIs from screen recordings, offering a revolutionary approach to prototyping and development. Forget static screenshots – Replay understands behavior.

Why Video-to-Code is the Future#

Let's face it: traditional design-to-code workflows are inefficient. They rely on manual interpretation, leading to inconsistencies, errors, and significant time wastage. Current screenshot-to-code solutions offer a slight improvement, but they only capture the visual aspect. They fail to understand the intent behind the UI interactions.

Replay addresses these limitations by analyzing video recordings of UI prototypes. This "Behavior-Driven Reconstruction" allows Replay to understand user flows, component states, and dynamic interactions, resulting in more accurate and functional code generation. This isn't just about aesthetics; it's about usability and functionality.

Replay AI: A Step-by-Step Guide#

This guide will walk you through using Replay AI to convert a UI prototype video into production-ready code. We'll cover the essential steps, from recording your prototype to deploying the generated code.

Step 1: Recording Your UI Prototype#

The first step is to create a video recording of your UI prototype. This recording should showcase the key features and interactions of your application.

💡 Pro Tip: Keep your video concise and focused. Clearly demonstrate each user flow and component interaction. A well-organized video will result in more accurate code generation.

Here are some tips for recording a high-quality prototype video:

• •Use a screen recording tool: Tools like Loom, QuickTime, or OBS Studio are excellent for capturing screen recordings.
• •Plan your demonstration: Before recording, outline the user flows you want to showcase.
• •Speak clearly (optional): While Replay primarily analyzes visual data, adding a voiceover can provide additional context and clarity.
• •Keep it clean: Minimize distractions on your screen during the recording.

Step 2: Uploading Your Video to Replay#

Once you have your prototype video, upload it to the Replay platform. The platform supports various video formats, including MP4, MOV, and WebM.

📝 Note: The processing time will depend on the length and complexity of your video. You'll receive an email notification when the code generation is complete.

Step 3: Reviewing and Editing the Generated Code#

After processing your video, Replay generates a functional UI codebase. This code includes:

• •React components representing your UI elements
• •JavaScript logic for handling user interactions
• •CSS styles for visual presentation

⚠️ Warning: While Replay strives for accuracy, manual review and editing are often necessary to refine the generated code and ensure it meets your specific requirements.

Here's an example of generated React code:

typescript
// Example generated React component
import React, { useState } from 'react';
import './Button.css';

interface ButtonProps {
  text: string;
  onClick: () => void;
}

const Button: React.FC<ButtonProps> = ({ text, onClick }) => {
  const [isHovered, setIsHovered] = useState(false);

  return (
    <button
      className={`button ${isHovered ? 'button--hovered' : ''}`}
      onClick={onClick}
      onMouseEnter={() => setIsHovered(true)}
      onMouseLeave={() => setIsHovered(false)}
    >
      {text}
    </button>
  );
};

export default Button;

Replay's interface allows you to:

• •Inspect the code: Examine the generated code for each component.
• •Edit the code: Make changes directly within the Replay editor.
• •Download the code: Download the generated codebase as a ZIP file.

Step 4: Integrating with Supabase (Optional)#

Replay offers seamless integration with Supabase, allowing you to connect your UI to a backend database with minimal effort. This is incredibly powerful for prototypes that require data persistence or authentication.

To integrate with Supabase:

1. •Provide your Supabase API URL and API Key.
2. •Define your data models in Supabase.
3. •Replay will automatically generate the necessary API calls to interact with your Supabase database.

Step 5: Style Injection#

Replay allows you to inject custom CSS styles into your generated UI. This feature is useful for:

• •Applying your brand's visual identity
• •Fine-tuning the appearance of components
• •Creating responsive layouts

You can either upload a CSS file or write CSS directly within the Replay editor.

Step 6: Understanding Product Flow Maps#

Replay automatically generates product flow maps from your video. These maps visualize the user journey through your application, highlighting key interactions and navigation paths. This is invaluable for understanding user behavior and identifying potential areas for improvement.

Replay Features: A Deeper Dive#

Replay offers a range of features designed to streamline the UI development process:

• •Multi-page generation: Replay can handle videos that showcase multiple pages or screens within your application.
• •Supabase integration: Connect your UI to a backend database with ease.
• •Style injection: Customize the appearance of your UI with custom CSS styles.
• •Product Flow maps: Visualize user journeys and identify areas for improvement.
• •Component Recognition: Replay intelligently identifies and isolates UI components, allowing for granular control and customization.
• •State Management: Replay infers state changes based on user interactions in the video, automatically generating state management code (e.g., using React's
  text

  useState
  hook).

Replay vs. Traditional Methods and Other Tools#

Here's a comparison of Replay against traditional design-to-code workflows and other code generation tools:

And here's how Replay stacks up against some other AI-powered code generation tools:

🚀 Benefit: Replay significantly reduces the time and effort required to translate UI prototypes into production-ready code.

Benefits of Using Replay#

• •Faster Development Cycles: Accelerate your UI development process by automating code generation.
• •Improved Code Quality: Generate more accurate and functional code compared to manual methods.
• •Enhanced Collaboration: Bridge the gap between designers and developers.
• •Reduced Costs: Save time and resources by automating repetitive tasks.
• •Focus on Innovation: Free up your team to focus on higher-level design and functionality.

typescript
// Example of Replay generated API call for Supabase
const fetchProducts = async () => {
  const { data, error } = await supabase
    .from('products')
    .select('*');

  if (error) {
    console.error('Error fetching products:', error);
    return [];
  }

  return data;
};

Frequently Asked Questions#

Is Replay free to use?#

Replay offers a free tier with limited features. Paid plans are available for users who require more advanced functionality and higher usage limits.

How is Replay different from v0.dev?#

Replay uses video as its primary input, enabling behavior-driven reconstruction. v0.dev, on the other hand, relies on text prompts to generate UI code. Replay understands what users are doing, not just what they are asking for.

What types of applications is Replay best suited for?#

Replay is well-suited for a wide range of applications, including web applications, mobile apps, and desktop software. It's particularly useful for projects that involve complex user interactions and dynamic UIs.

What if the generated code isn't perfect?#

Replay is designed to generate high-quality code, but manual review and editing are often necessary. The platform provides tools for inspecting and modifying the generated code to ensure it meets your specific requirements.

What kind of video should I upload?#

The best videos are clear screen recordings that show the user interface and the desired user flow. Focus on demonstrating functionality and the intended user experience.

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Ready to try behavior-driven code generation? Get started with Replay - transform any video into working code in seconds.