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January 5, 20266 min readReplay AI: Generating

Replay AI: Generating Code for Interactive E-Learning Modules with React

R
Replay Team
Developer Advocates

TL;DR: Replay AI revolutionizes e-learning module creation by generating interactive React code directly from video demonstrations, significantly reducing development time and improving design fidelity.

The promise of AI-powered code generation has largely fallen flat. Screenshot-to-code tools? Novel, but ultimately limited. They capture the static visual, not the dynamic behavior. This is especially problematic in interactive e-learning modules where the user experience hinges on the flow and responsiveness of the interface.

Replay changes the game. We don't just see a picture; we understand the intent behind every click, scroll, and keystroke. Our "Behavior-Driven Reconstruction" uses video as the source of truth, allowing you to reconstruct complex, multi-page e-learning experiences with functional React code.

The E-Learning Bottleneck: From Design to Deploy#

Creating engaging e-learning modules is a complex process. Instructional designers meticulously craft learning paths, UI/UX designers translate them into interactive interfaces, and developers painstakingly bring those designs to life with code. This linear process is slow, expensive, and prone to misinterpretations. A single design change can trigger a cascade of revisions across multiple teams.

The traditional workflow often looks like this:

  1. Design mockups in Figma or Sketch.
  2. Export static assets (images, icons, etc.).
  3. Write React code from scratch, interpreting design specifications.
  4. Implement interactive elements (buttons, forms, animations).
  5. Test and debug the module.
  6. Repeat steps 3-5 for every design iteration.

This is where Replay comes in. Imagine recording a video of yourself interacting with a prototype e-learning module. Then, with a single click, transforming that video into fully functional React code, complete with interactive elements and data integration. That's the power of Replay.

Replay: Behavior-Driven Reconstruction for E-Learning#

Replay leverages advanced video analysis and Gemini to understand the behavior demonstrated in the recording. This "Behavior-Driven Reconstruction" approach is fundamentally different from screenshot-to-code tools. We don't just see pixels; we understand the underlying logic and user intent.

Here's a comparison:

FeatureScreenshot-to-CodeTraditional CodingReplay
InputStatic ImagesDesign SpecificationsVideo of User Interaction
OutputBasic HTML/CSSManually Coded ReactFunctional, Interactive React Code
Behavior AnalysisRequires Manual Coding✅ (Understands User Intent)
Multi-Page SupportLimitedRequires Manual Coding✅ (Generates Multi-Page Applications)
Data IntegrationRequires Manual CodingRequires Manual Coding✅ (Integrates with Supabase, APIs)
Development SpeedIncrementalSlowExponentially Faster
Design FidelityLowMediumHigh (Faithful to Original Interaction)

💡 Pro Tip: Record clear, deliberate videos to maximize Replay's accuracy. Focus on demonstrating the desired user flow and interactive elements.

Building an Interactive E-Learning Module with Replay: A Step-by-Step Guide#

Let's walk through a practical example: creating a simple interactive quiz module using Replay.

Step 1: Design and Prototype#

First, create a basic prototype of your quiz module using your preferred design tool (Figma, Sketch, Adobe XD). The prototype should include:

  • A welcome screen with instructions.
  • A series of multiple-choice questions.
  • A results screen with feedback.

Step 2: Record Your Interaction#

Record a video of yourself interacting with the prototype. Be sure to:

  • Clearly demonstrate the desired user flow.
  • Click on each answer option.
  • Navigate through the different screens.
  • Show the final results screen.

⚠️ Warning: Ensure the video is clear and well-lit. Poor video quality can impact Replay's ability to accurately reconstruct the code.

Step 3: Upload to Replay#

Upload the video to Replay. Our AI engine will analyze the video and generate the corresponding React code.

Step 4: Review and Refine the Generated Code#

Replay will generate a React codebase that you can download and customize. The generated code will include:

  • React components for each screen.
  • Event handlers for button clicks and form submissions.
  • Logic for tracking user progress and displaying results.
  • Basic styling that mirrors the look and feel of your prototype.

Here's an example of the kind of React code Replay can generate:

typescript
// Example generated React component for a quiz question import React, { useState } from 'react'; interface QuestionProps { questionText: string; options: string[]; correctAnswer: string; onAnswer: (isCorrect: boolean) => void; } const Question: React.FC<QuestionProps> = ({ questionText, options, correctAnswer, onAnswer }) => { const [selectedAnswer, setSelectedAnswer] = useState<string | null>(null); const handleAnswerClick = (answer: string) => { setSelectedAnswer(answer); const isCorrect = answer === correctAnswer; onAnswer(isCorrect); }; return ( <div> <h3>{questionText}</h3> <ul> {options.map((option) => ( <li key={option}> <button onClick={() => handleAnswerClick(option)} disabled={selectedAnswer !== null}> {option} </button> </li> ))} </ul> </div> ); }; export default Question;

Step 5: Customize and Integrate#

The generated code provides a solid foundation. You can then customize the code to:

  • Add more sophisticated styling.
  • Integrate with a backend database to store user progress (Replay supports Supabase integration out-of-the-box).
  • Implement more complex interactive elements.

Beyond the Basics: Replay's Advanced Features#

Replay offers several advanced features that further streamline the e-learning development process:

  • Multi-Page Generation: Reconstruct entire learning modules with multiple pages and complex navigation flows.
  • Supabase Integration: Seamlessly integrate with Supabase to store user data, track progress, and personalize the learning experience.
  • Style Injection: Inject custom CSS styles to refine the look and feel of the generated code.
  • Product Flow Maps: Visualize the user flow captured in the video, providing a clear overview of the module's structure.

📝 Note: Replay is constantly evolving. We're actively working on adding support for more frameworks, libraries, and data sources.

The Future of E-Learning Development#

Replay is not just a code generation tool; it's a paradigm shift in how we approach e-learning development. By focusing on behavior-driven reconstruction, we're empowering instructional designers and developers to:

  • Rapidly prototype and iterate: Quickly transform ideas into functional prototypes.
  • Reduce development time and costs: Automate the tedious task of writing code from scratch.
  • Improve design fidelity: Ensure that the final product accurately reflects the intended user experience.
  • Focus on creativity and innovation: Spend less time coding and more time designing engaging learning experiences.

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 capabilities and higher usage limits.

How is Replay different from v0.dev?#

While both tools aim to generate code from visual inputs, Replay focuses on video analysis and behavior-driven reconstruction. v0.dev primarily uses text prompts and screenshot analysis. Replay understands how a user interacts with an interface, not just what it looks like. This is crucial for creating truly interactive e-learning modules.

What frameworks and libraries does Replay support?#

Currently, Replay primarily supports React. Support for other frameworks like Vue.js and Angular is planned for future releases.

How accurate is the generated code?#

Replay's accuracy depends on the quality of the input video. Clear, well-lit videos with deliberate user interactions will yield the best results.


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