AI Caption Editor with React Native

Overview

A comprehensive React Native mobile application that combines AI-powered caption generation with advanced text-to-speech capabilities using ElevenLabs. This tutorial project demonstrates how to build a modern, feature-rich mobile app with real-time data synchronization, authentication, and professional-grade error tracking.

Key Features

• AI-Powered Caption Generation - Intelligent video caption creation and editing
• ElevenLabs Text-to-Speech Integration - High-quality voice synthesis for captions
• Real-time Data Synchronization - Instant updates across devices with Convex
• Passwordless Authentication - Seamless user experience with Clerk
• Professional Error Tracking - Comprehensive monitoring with Sentry
• Haptic Feedback - Enhanced mobile user experience
• Video & Audio Playback - Built-in media handling capabilities
• Secure Storage - Protected user data and preferences

How It Works

The app leverages modern React Native architecture with Expo for cross-platform development. At its core, ElevenLabs powers the caption generation workflow - converting text into high-quality speech audio and providing precise timestamps for each text block. This timing data enables accurate caption synchronization with video playback, creating seamless audio-visual alignment.

The ElevenLabs integration handles both text-to-speech synthesis and timestamp extraction, allowing users to generate professional-quality voiceovers with frame-accurate caption timing. Convex manages real-time data synchronization across devices, while Jotai handles efficient state management and NativeWind provides utility-first styling. The app includes native features like haptic feedback and secure storage for an enhanced mobile experience.

Technologies Used

• ElevenLabs API - Text-to-speech synthesis for caption audio
• React Native - Cross-platform mobile development framework
• Expo - Development platform and toolchain
• Convex - Real-time database and file storage backend
• Clerk - User authentication and management
• Sentry - Error tracking and performance monitoring
• Jotai - Modern state management library
• NativeWind - Utility-first styling system

Getting Started

Copy# Clone the repository
git clone https://github.com/Galaxies-dev/ai-caption-editor-react-native
 
# Install dependencies
npm install
 
# Set up environment variables for ElevenLabs, Convex, and Clerk
# (See repository README for detailed setup instructions)
 
# Start the development server
npx expo start

Demo

Tutorial

This project comes with a comprehensive YouTube tutorial that walks through the entire development process, from initial setup to deployment. Perfect for developers looking to learn modern React Native development with AI integration.