Replay for Project Management: Building Task Management UIs from Video Demos

TL;DR: Replay lets you build working project management UIs directly from video demos, saving time and ensuring accurate feature implementation.

The disconnect between product vision and engineering execution is a massive time sink in project management. Endless meetings, detailed spec documents, and constant back-and-forth often fail to translate the intended user experience into a working product. What if you could bridge that gap with a simple video?

Enter Replay. We're not just converting pixels to code; we're reconstructing behavior. By analyzing video demos, Replay, powered by Gemini, understands the flow of a user interacting with a task management system and generates a functional UI that mirrors that behavior. This approach, called Behavior-Driven Reconstruction, ensures the final product aligns with the initial vision.

From Demo to Deployment: A Task Management UI Example#

Let's walk through building a basic task management UI using Replay from a video demonstration. Imagine you have a recording showing someone creating, assigning, and completing tasks. Replay can analyze this video and generate the core UI components and logic.

Step 1: Uploading and Analyzing the Video#

The first step is uploading the video demo to Replay. Replay's AI engine analyzes the video, identifying key UI elements (buttons, input fields, lists), user interactions (clicks, form submissions, drag-and-drop), and the overall flow of the application.

💡 Pro Tip: Clear, well-lit videos with consistent user actions produce the best results. Avoid excessive mouse movement or distracting background elements.

Step 2: Generating the UI Structure#

Once the video is analyzed, Replay generates the basic HTML structure of the task management UI. This includes creating containers for tasks, input fields for task descriptions, and buttons for actions like "Add Task" or "Complete Task."

html
<div id="task-list">
  <div class="task">
    <input type="checkbox" class="task-complete">
    <span class="task-description">Grocery Shopping</span>
    <button class="delete-task">Delete</button>
  </div>
  <div class="task">
    <input type="checkbox" class="task-complete">
    <span class="task-description">Book Doctor Appointment</span>
    <button class="delete-task">Delete</button>
  </div>
</div>
<input type="text" id="new-task-description" placeholder="Add new task">
<button id="add-task-button">Add Task</button>

This generated HTML is a starting point, providing a solid foundation for further customization.

Step 3: Implementing Task Management Logic#

Replay goes beyond just generating the UI structure. It also generates the necessary JavaScript code to handle user interactions and manage the task list. This includes:

• •Adding new tasks to the list.
• •Marking tasks as complete.
• •Deleting tasks.

typescript
document.addEventListener('DOMContentLoaded', () => {
  const taskList = document.getElementById('task-list');
  const newTaskDescriptionInput = document.getElementById('new-task-description') as HTMLInputElement;
  const addTaskButton = document.getElementById('add-task-button');

  addTaskButton.addEventListener('click', () => {
    const description = newTaskDescriptionInput.value;
    if (description) {
      const taskDiv = document.createElement('div');
      taskDiv.classList.add('task');

      const completeCheckbox = document.createElement('input');
      completeCheckbox.type = 'checkbox';
      completeCheckbox.classList.add('task-complete');

      const taskDescriptionSpan = document.createElement('span');
      taskDescriptionSpan.classList.add('task-description');
      taskDescriptionSpan.textContent = description;

      const deleteTaskButton = document.createElement('button');
      deleteTaskButton.classList.add('delete-task');
      deleteTaskButton.textContent = 'Delete';
      deleteTaskButton.addEventListener('click', () => {
        taskDiv.remove();
      });

      taskDiv.appendChild(completeCheckbox);
      taskDiv.appendChild(taskDescriptionSpan);
      taskDiv.appendChild(deleteTaskButton);

      taskList.appendChild(taskDiv);
      newTaskDescriptionInput.value = '';
    }
  });

  taskList.addEventListener('change', (event) => {
    if (event.target instanceof HTMLInputElement && event.target.classList.contains('task-complete')) {
      const taskDiv = event.target.closest('.task');
      if (taskDiv) {
        taskDiv.classList.toggle('completed', event.target.checked);
      }
    }
  });
});

This code snippet provides the core functionality for adding, completing, and deleting tasks.

Step 4: Styling the UI#

Replay can also infer basic styling from the video, applying it to the generated UI. However, you can easily inject your own custom styles to match your project's branding. Replay supports CSS injection, allowing you to quickly customize the appearance of the UI.

📝 Note: Replay's style injection allows for both global CSS and component-specific styling.

Step 5: Integrating with Supabase#

Replay integrates seamlessly with Supabase, allowing you to persist the task data in a cloud-based database. Replay can generate the necessary Supabase client code and database schema based on the video demo. This enables you to quickly build a fully functional, data-driven task management application.

Replay vs. Traditional Methods#

Traditional project management often relies on static mockups or detailed written specifications. These methods can be time-consuming and prone to misinterpretation. Replay offers a more efficient and accurate approach by directly translating user behavior from video into working code.

Benefits of Using Replay for Project Management#

• •Faster Development: Generate working UI components and logic in seconds. 🚀
• •Improved Accuracy: Ensure the final product aligns with the intended user experience. ✅
• •Reduced Miscommunication: Minimize the risk of misinterpreting requirements.
• •Enhanced Collaboration: Use video demos as a common language between product and engineering teams.
• •Easier Iteration: Quickly iterate on designs based on real user feedback captured in video.
• •Multi-Page Generation: Handle complex flows with multiple screens.
• •Supabase Integration: Seamlessly connect your UI to a backend database.

⚠️ Warning: Replay is not a replacement for skilled developers. It's a powerful tool that accelerates development and improves accuracy, but it requires human oversight and customization.

Product Flow Maps#

Replay automatically generates product flow maps based on the video analysis. These maps visually represent the user journey through the task management application, making it easier to understand the overall flow and identify potential bottlenecks.

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 higher usage limits.

How is Replay different from screenshot-to-code tools?#

Screenshot-to-code tools only analyze static images, while Replay analyzes video to understand user behavior and intent. Replay generates functional code, not just static UI elements. We focus on what the user is trying to do, not just what they see.

What types of videos work best with Replay?#

Clear, well-lit videos with consistent user actions produce the best results. Videos should focus on the specific user flow you want to reconstruct.

Can Replay handle complex user interfaces?#

Yes, Replay's multi-page generation feature allows it to handle complex user interfaces with multiple screens and interactions.

Does Replay support different front-end frameworks?#

Currently, Replay primarily generates HTML, CSS, and JavaScript. Support for other frameworks like React and Vue.js is planned for future releases.

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