Replay AI: The Fastest Way to Convert Video to Production-Ready UI Code in 2026

TL;DR: Replay AI reconstructs fully functional UI code directly from video recordings, enabling rapid prototyping and development by understanding user behavior, not just visual elements.

Replay AI: The Fastest Way to Convert Video to Production-Ready UI Code in 2026#

In the fast-paced world of software development, speed and accuracy are paramount. Traditional UI development processes, relying on mockups, prototypes, and manual coding, are often time-consuming and prone to errors. The future demands a more efficient approach – one that leverages the power of AI to translate real-world user interactions into functional code. That future is here with Replay.

Replay is a revolutionary video-to-code engine that uses Gemini to reconstruct working UI from screen recordings. It goes beyond simple screenshot-to-code conversion, analyzing user behavior within the video to generate accurate, production-ready code. This approach, which we call "Behavior-Driven Reconstruction," fundamentally changes how we approach UI development.

The Problem with Traditional UI Development#

Traditional UI development workflows are often fragmented and inefficient. Consider the typical steps:

1. •Design Mockups: Creating static mockups that represent the intended UI.
2. •Prototyping: Building interactive prototypes to simulate user flows.
3. •Manual Coding: Translating the designs and prototypes into actual code, often a time-consuming and error-prone process.
4. •Testing & Iteration: Identifying and fixing bugs, and iterating on the design based on user feedback.

This process is not only slow but also relies heavily on manual interpretation and translation, which can lead to inconsistencies and errors. What if you could skip several of these steps and go directly from a demonstration of the desired user experience to a functional UI?

Introducing Behavior-Driven Reconstruction#

Replay takes a fundamentally different approach. Instead of relying on static designs or prototypes, Replay analyzes video recordings of user interactions to understand the intent behind each action. This "Behavior-Driven Reconstruction" allows Replay to generate code that accurately reflects the desired user experience.

Here's how it works:

1. •Record a Video: Capture a video of yourself or a user interacting with an existing application or a rough prototype. The video should clearly demonstrate the desired user flow and interactions.
2. •Upload to Replay: Upload the video to the Replay platform.
3. •AI Analysis: Replay's AI engine analyzes the video, identifying UI elements, user actions (e.g., clicks, scrolls, form submissions), and the relationships between them.
4. •Code Generation: Replay generates clean, production-ready code that replicates the observed user behavior.

This approach offers several key advantages:

• •Speed: Significantly reduces development time by automating the code generation process.
• •Accuracy: Ensures that the generated code accurately reflects the intended user experience.
• •Flexibility: Allows for rapid iteration and experimentation with different UI designs.

Key Features of Replay#

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

• •Multi-page Generation: Replay can generate code for multi-page applications, capturing complex user flows across multiple screens.
• •Supabase Integration: Seamlessly integrates with Supabase, allowing you to easily connect your UI to a backend database.
• •Style Injection: Provides options to customize the look and feel of the generated UI through style injection.
• •Product Flow Maps: Visualizes the user flow captured in the video, providing a clear overview of the application's functionality.

Replay in Action: A Practical Example#

Let's consider a simple example: creating a basic to-do list application. Instead of designing mockups and manually coding the UI, you can simply record a video of yourself interacting with a hand-drawn prototype or an existing to-do list application.

Here are the steps:

Step 1: Recording the Video#

Record a video demonstrating the following actions:

1. •Adding a new task to the list.
2. •Marking a task as completed.
3. •Deleting a task from the list.

Make sure the video is clear and captures all the relevant user interactions.

Step 2: Uploading to Replay#

Upload the video to the Replay platform.

Step 3: Code Generation#

Replay will analyze the video and generate the corresponding code. You can choose from various output formats, such as React, Vue, or Angular.

Here's an example of the React code that Replay might generate:

typescript
// Generated by Replay AI
import React, { useState } from 'react';

const TodoList = () => {
  const [todos, setTodos] = useState([]);
  const [newTask, setNewTask] = useState('');

  const handleInputChange = (event: React.ChangeEvent<HTMLInputElement>) => {
    setNewTask(event.target.value);
  };

  const handleAddTask = () => {
    if (newTask.trim() !== '') {
      setTodos([...todos, { text: newTask, completed: false }]);
      setNewTask('');
    }
  };

  const handleToggleComplete = (index: number) => {
    const updatedTodos = [...todos];
    updatedTodos[index].completed = !updatedTodos[index].completed;
    setTodos(updatedTodos);
  };

  const handleDeleteTask = (index: number) => {
    const updatedTodos = todos.filter((_, i) => i !== index);
    setTodos(updatedTodos);
  };

  return (
    <div>
      <h1>Todo List</h1>
      <input
        type="text"
        value={newTask}
        onChange={handleInputChange}
        placeholder="Add new task"
      />
      <button onClick={handleAddTask}>Add</button>
      <ul>
        {todos.map((todo, index) => (
          <li key={index}>
            <input
              type="checkbox"
              checked={todo.completed}
              onChange={() => handleToggleComplete(index)}
            />
            <span style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}>
              {todo.text}
            </span>
            <button onClick={() => handleDeleteTask(index)}>Delete</button>
          </li>
        ))}
      </ul>
    </div>
  );
};

export default TodoList;

This code provides a basic to-do list application with the functionality to add, complete, and delete tasks. You can then further customize and extend this code to meet your specific requirements.

Replay vs. Traditional Methods and Other Tools#

How does Replay stack up against traditional UI development methods and other AI-powered code generation tools?

Replay distinguishes itself by its unique ability to analyze video input and understand user behavior. This allows it to generate more accurate, functional, and maintainable code compared to other tools that rely on static images or text prompts.

💡 Pro Tip: For best results, ensure your video recordings are clear, well-lit, and demonstrate the desired user flow in a logical and concise manner.

The Future of UI Development#

Replay represents a significant step forward in the evolution of UI development. By leveraging the power of AI to automate code generation and capture user intent, Replay empowers developers to build better UIs faster than ever before.

Here are some potential future developments for Replay:

• •Enhanced AI Models: Continued improvements in AI models will further enhance the accuracy and quality of the generated code.
• •Expanded Language Support: Support for a wider range of programming languages and frameworks.
• •Advanced Customization Options: More granular control over the code generation process, allowing developers to fine-tune the output to their specific needs.
• •Integration with Design Tools: Seamless integration with popular design tools, enabling a more streamlined workflow from design to code.

📝 Note: Replay is constantly evolving, with new features and improvements being added regularly. Stay tuned for future updates and enhancements.

⚠️ Warning: While Replay can significantly accelerate UI development, it's important to review and test the generated code thoroughly to ensure it meets your specific requirements and adheres to best practices.

A Concrete Code Example: Handling Form Submissions#

Beyond simple UI elements, Replay excels at understanding complex user interactions like form submissions. Imagine a video showing a user filling out a contact form. Replay can generate the React code to handle the form state, validation, and submission logic:

typescript
// Generated by Replay AI
import React, { useState } from 'react';

const ContactForm = () => {
  const [name, setName] = useState('');
  const [email, setEmail] = useState('');
  const [message, setMessage] = useState('');

  const handleSubmit = async (event: React.FormEvent) => {
    event.preventDefault();

    // Basic validation (expand as needed)
    if (!name || !email || !message) {
      alert('Please fill out all fields.');
      return;
    }

    try {
      const response = await fetch('/api/contact', { // Replace with your API endpoint
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify({ name, email, message }),
      });

      if (response.ok) {
        alert('Message sent successfully!');
        setName('');
        setEmail('');
        setMessage('');
      } else {
        alert('Failed to send message. Please try again later.');
      }
    } catch (error) {
      console.error('Error sending message:', error);
      alert('An error occurred. Please try again later.');
    }
  };

  return (
    <form onSubmit={handleSubmit}>
      <div>
        <label htmlFor="name">Name:</label>
        <input
          type="text"
          id="name"
          value={name}
          onChange={(e) => setName(e.target.value)}
        />
      </div>
      <div>
        <label htmlFor="email">Email:</label>
        <input
          type="email"
          id="email"
          value={email}
          onChange={(e) => setEmail(e.target.value)}
        />
      </div>
      <div>
        <label htmlFor="message">Message:</label>
        <textarea
          id="message"
          value={message}
          onChange={(e) => setMessage(e.target.value)}
        />
      </div>
      <button type="submit">Submit</button>
    </form>
  );
};

export default ContactForm;

This code captures the essential elements of a contact form, including state management, input handling, validation, and submission. Replay accurately infers these components from the video, significantly reducing the manual coding effort.

Frequently Asked Questions#

Is Replay free to use?#

Replay offers a free tier with limited usage, allowing you to try out the platform and experience its capabilities. Paid plans are available for more extensive usage and access to advanced features.

How is Replay different from v0.dev?#

While both Replay and v0.dev aim to accelerate UI development, they take different approaches. v0.dev relies on text prompts to generate code, while Replay analyzes video recordings of user interactions. Replay's "Behavior-Driven Reconstruction" provides a more accurate and nuanced understanding of user intent, resulting in higher-quality code. Replay understands what the user is trying to do, not just what they see.

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