Replay: The Ultimate Tool for Streamlining UI Development from Video in 2026

TL;DR: Replay leverages video analysis and Gemini to reconstruct functional UI code, understanding user intent beyond just visual elements.

Replay: The Ultimate Tool for Streamlining UI Development from Video in 2026#

The old screenshot-to-code dream? It's dead. Static images simply can't capture the dynamic nature of user interactions. But what if you could turn video of a UI into functional code? That's the promise – and reality – of Replay. We're moving beyond pixel-perfect replicas to behavior-driven reconstruction.

The Problem with Traditional UI Generation#

Generating UI code from screenshots has always been a tempting shortcut. But the limitations are glaring:

• •Static Representation: Screenshots are just that – static. They miss the context of user flows, animations, and dynamic data.
• •Lack of Intent: A screenshot doesn't tell you why a user clicked a button or filled out a form. Understanding intent is crucial for creating functional code.
• •Brittle Code: Code generated from screenshots is often brittle and difficult to maintain because it's based on visual appearance rather than underlying logic.

These limitations lead to significant rework and debugging, negating the initial time savings. Replay addresses these issues head-on by analyzing video, not just images.

Behavior-Driven Reconstruction: Video as the Source of Truth#

Replay uses a novel approach we call "Behavior-Driven Reconstruction." Instead of simply converting pixels to code, Replay analyzes video recordings to understand user behavior and intent. This allows it to generate more robust, maintainable, and functional UI code. Replay leverages Gemini to understand the nuances of user interactions and translates them into executable code.

Key Features of Replay#

Replay isn't just another screenshot-to-code tool. It offers a suite of features designed to streamline UI development:

• •Multi-Page Generation: Replay can analyze videos that span multiple pages or screens, creating complete user flows.
• •Supabase Integration: Seamlessly integrate your generated UI with Supabase for backend functionality.
• •Style Injection: Customize the look and feel of your UI with style injection.
• •Product Flow Maps: Visualize the user flows captured in your videos, making it easier to understand and modify the generated code.

Replay vs. the Competition#

Let's see how Replay stacks up against other UI generation tools:

As you can see, Replay offers a unique combination of features that make it the ultimate tool for streamlining UI development from video.

Implementing Replay: A Step-by-Step Guide#

Here's how to use Replay to generate UI code from a video recording:

Step 1: Record Your UI Interaction#

Use any screen recording tool to capture the user interaction you want to recreate. Make sure the video is clear and shows all relevant UI elements and actions.

💡 Pro Tip: Speak clearly while recording to describe your actions. This provides Replay with additional context and improves the accuracy of the generated code.

Step 2: Upload to Replay#

Upload the video to the Replay platform. Replay will automatically analyze the video and extract the relevant UI elements and interactions.

Step 3: Review and Refine#

Review the generated UI code and make any necessary refinements. Replay provides a visual editor that allows you to easily modify the code and preview the results.

Step 4: Integrate with Your Project#

Integrate the generated UI code into your project. Replay supports a variety of frameworks and libraries, making it easy to integrate the code into your existing workflow.

Real-World Example: Reconstructing a Login Flow#

Let's say you have a video recording of a user logging into a web application. Here's how Replay can help you reconstruct the login flow:

1. •Video Analysis: Replay analyzes the video and identifies the login form, including the username and password fields, and the submit button.
2. •Behavior Understanding: Replay understands that the user is entering their username and password and then clicking the submit button to log in.
3. •Code Generation: Replay generates the following code:

typescript
// Example React component generated by Replay
import React, { useState } from 'react';

const LoginForm = () => {
  const [username, setUsername] = useState('');
  const [password, setPassword] = useState('');

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    // Simulate authentication (replace with your actual logic)
    const response = await fetch('/api/login', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({ username, password }),
    });

    if (response.ok) {
      console.log('Login successful!');
      // Redirect or update state as needed
    } else {
      console.error('Login failed');
    }
  };

  return (
    <form onSubmit={handleSubmit}>
      <label htmlFor="username">Username:</label>
      <input
        type="text"
        id="username"
        value={username}
        onChange={(e) => setUsername(e.target.value)}
      />
      <label htmlFor="password">Password:</label>
      <input
        type="password"
        id="password"
        value={password}
        onChange={(e) => setPassword(e.target.value)}
      />
      <button type="submit">Login</button>
    </form>
  );
};

export default LoginForm;

This code is not just a static representation of the login form. It's a functional React component that handles user input and submits the form data to a backend API. Replay understands the behavior of the user and translates it into working code.

📝 Note: This is a simplified example. Replay can generate more complex UI code, including animations, data binding, and state management.

Streamlining Development with Replay and Supabase#

Replay's integration with Supabase takes UI development to the next level. Imagine recording a video of a user creating a new account, and Replay automatically generates the UI and the Supabase database schema to store the user's information.

Here's how it works:

1. •Replay analyzes the video: It identifies the form fields (name, email, password) and the submit button.
2. •Replay generates the UI code: A React component with input fields and a submit handler is created.
3. •Replay generates the Supabase schema: A
   text

   users
   table is created in your Supabase database with columns for
   text

   name
   ,
   text

   email
   , and
   text

   password
   .
4. •Replay connects the UI to Supabase: The submit handler is configured to send the form data to Supabase for storage.

typescript
// Example of Supabase integration
import { createClient } from '@supabase/supabase-js';

const supabaseUrl = 'YOUR_SUPABASE_URL';
const supabaseKey = 'YOUR_SUPABASE_ANON_KEY';
const supabase = createClient(supabaseUrl, supabaseKey);

const handleSubmit = async (e: React.FormEvent) => {
  e.preventDefault();
  const { data, error } = await supabase
    .from('users')
    .insert([
      { name: username, email: email, password: password },
    ]);

  if (error) {
    console.error('Error inserting data:', error);
  } else {
    console.log('Data inserted successfully:', data);
  }
};

⚠️ Warning: Remember to replace

text

YOUR_SUPABASE_URL

and

text

YOUR_SUPABASE_ANON_KEY

with your actual Supabase credentials. Never commit your Supabase secret key to a public repository.

Frequently Asked Questions#

Is Replay free to use?#

Replay offers a free tier with limited features. Paid plans are available for more advanced features and usage. Check the pricing page for the most up-to-date information.

How is Replay different from v0.dev?#

While both Replay and v0.dev leverage AI for code generation, Replay uniquely uses video as its primary input. This allows Replay to understand user behavior and generate more functional and maintainable code, whereas v0.dev primarily relies on text prompts.

What frameworks does Replay support?#

Replay currently supports React, Vue, and Angular. Support for other frameworks is planned for future releases.

Can Replay handle complex UI interactions?#

Yes, Replay is designed to handle complex UI interactions, including animations, data binding, and state management. The more detailed the video, the better Replay can reconstruct the UI.

How accurate is Replay's code generation?#

Replay's code generation accuracy is constantly improving. The accuracy depends on the quality of the video and the complexity of the UI. We recommend reviewing and refining the generated code to ensure it meets your specific requirements.

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