react-native-nitro-media-metadata

A high-performance React Native library for extracting comprehensive video metadata across iOS and Android platforms. Built with Nitro Modules for optimal performance.

Features

• 🎥 Extract comprehensive video metadata including duration, dimensions, codec, bitrate, and more
• 🎵 Audio metadata extraction including duration, sample rate, channels, artist, and title
• 🖼️ Image metadata extraction including dimensions, format, EXIF data, and orientation
• 🌐 Cross-platform support for iOS and Android
• ⚡ High performance using native modules via Nitro Modules
• 📱 Local and remote files support from device storage or URLs
• 🎯 TypeScript support with full type definitions
• 📊 Advanced metadata including HDR detection, orientation, location data, and codec details

Installation

npm install react-native-nitro-media-metadata react-native-nitro-modules

Note: react-native-nitro-modules is required as this library relies on Nitro Modules.

Additional Setup

iOS

For iOS, you need to install the pods:

cd ios && pod install

Android

No additional setup required for Android.

Expo

This library works with Expo, but requires Expo Dev Client for native module support.

Usage

Basic Usage

import { getVideoInfoAsync, getAudioInfoAsync, getImageInfoAsync } from 'react-native-nitro-media-metadata';

// Get metadata from a local video file
const videoInfo = await getVideoInfoAsync('file://path/to/video.mp4', {});
console.log('Video duration:', videoInfo.duration);

// Get metadata from an audio file
const audioInfo = await getAudioInfoAsync('file://path/to/audio.mp3', {});
console.log('Audio artist:', audioInfo.artist);

// Get metadata from an image file
const imageInfo = await getImageInfoAsync('file://path/to/image.jpg', {});
console.log('Image dimensions:', imageInfo.width, 'x', imageInfo.height);

Example with React Component

import React, { useState } from 'react';
import { View, Text, Button } from 'react-native';
import { launchImageLibrary } from 'react-native-image-picker';
import { getVideoInfoAsync } from 'react-native-nitro-media-metadata';

export default function VideoMetadataExample() {
  const [videoInfo, setVideoInfo] = useState(null);

  const pickVideo = async () => {
    try {
      const result = await launchImageLibrary({
        mediaType: 'video',
      });

      if (result.assets?.[0]?.uri) {
        const info = await getVideoInfoAsync(result.assets[0].uri, {});
        setVideoInfo(info);
      }
    } catch (error) {
      console.error('Error getting video info:', error);
    }
  };

  return (
    <View style={{ padding: 20 }}>
      <Button title="Pick Video" onPress={pickVideo} />
      {videoInfo && (
        <View>
          <Text>Duration: {videoInfo.duration}s</Text>
          <Text>Resolution: {videoInfo.width}x{videoInfo.height}</Text>
          <Text>Codec: {videoInfo.codec}</Text>
          <Text>FPS: {videoInfo.fps}</Text>
          <Text>Bitrate: {videoInfo.bitRate} bps</Text>
        </View>
      )}
    </View>
  );
}

Remote Video URL

// Get metadata from a remote video URL
const videoInfo = await getVideoInfoAsync('https://example.com/video.mp4', {
  headers: {
    Authorization: 'Bearer your-token',
  },
});

API Reference

getVideoInfoAsync(source: string, options: MediaInfoOptions): Promise<VideoInfoResult>

Parameters

• source (string): The video source URI. Can be:

  • Local file URI: file://path/to/video.mp4
  • Remote URL: https://example.com/video.mp4
  • Asset URI from camera roll

• options (MediaInfoOptions): Configuration options

  • headers (Record<string, string>): Optional headers for remote video requests

Return Value (Video)

Returns a promise that resolves to a VideoInfoResult object with the following properties:

| Property | Type | Description | Platform Support | | -------------------- | --------------------------- | --------------------------------------------- | ---------------------------- | | duration | number | Duration in seconds (float) | All | | hasAudio | boolean | Whether video has audio track | All | | isHDR | boolean or null | HDR video detection | iOS ≥14, Android | | width | number | Video width in pixels | All | | height | number | Video height in pixels | All | | fps | number | Frame rate (frames per second) | iOS, Android (except Safari) | | bitRate | number | Bit rate in bits per second | All | | fileSize | number | File size in bytes (0 for remote files) | All | | codec | string | Video codec | All | | orientation | string | Video orientation (Portrait, Landscape, etc.) | All | | naturalOrientation | string | Natural orientation without rotation | All | | aspectRatio | number | Aspect ratio | All | | is16_9 | boolean | Whether video is 16:9 aspect ratio | All | | audioSampleRate | number | Audio sample rate (samples per second) | All | | audioChannels | number | Audio channel count | All | | audioCodec | string | Audio codec | All | | location | VideoLocationType or null | GPS location data | iOS, Android |

getAudioInfoAsync(source: string, options: MediaInfoOptions): Promise<AudioInfoResult>

Return Value (Audio)

Returns a promise that resolves to an AudioInfoResult object:

| Property | Type | Description | Platform Support | | ------------ | -------- | --------------------------------------- | ---------------- | | duration | number | Duration in seconds (float) | All | | fileSize | number | File size in bytes | All | | codec | string | Audio codec (aac, mp3, etc.) | All | | sampleRate | number | Audio sample rate (samples per second) | All | | channels | number | Audio channel count | All | | bitRate | number | Bit rate in bits per second | All | | artist | string | Artist name | All | | title | string | Title | All | | album | string | Album name | All |

getImageInfoAsync(source: string, options: MediaInfoOptions): Promise<ImageInfoResult>

Return Value (Image)

Returns a promise that resolves to an ImageInfoResult object:

| Property | Type | Description | Platform Support | | ------------- | --------------------------- | --------------------------------------- | ---------------- | | width | number | Image width in pixels | All | | height | number | Image height in pixels | All | | fileSize | number | File size in bytes | All | | format | string | Image format (jpeg, png, etc.) | All | | orientation | string | Image orientation | All | | exif | Record<string, any> | EXIF data | All | | location | VideoLocationType or null | GPS location data | All |

VideoLocationType

type VideoLocationType = {
  latitude: number;
  longitude: number;
  altitude?: number;
};

Platform-Specific Notes

iOS Notes

• Full metadata support including HDR detection (iOS 14+)
• Location data extraction from video metadata
• Excellent codec and format support

Android Notes

• Comprehensive metadata extraction
• HDR video detection support
• Location data extraction

Error Handling

try {
  const videoInfo = await getVideoInfoAsync(videoUri, {});
  // Handle successful result
} catch (error) {
  console.error('Failed to get video metadata:', error);
  // Handle errors:
  // - Invalid video file
  // - Network errors for remote videos
  // - Permission issues
  // - Unsupported video format
}

Common Use Cases

1. Video Upload with Metadata

const uploadVideoWithMetadata = async (videoUri: string) => {
  const metadata = await getVideoInfoAsync(videoUri, {});

  // Upload video with metadata to your server
  await fetch('/api/upload', {
    method: 'POST',
    body: JSON.stringify({
      videoUri,
      metadata: {
        duration: metadata.duration,
        resolution: `${metadata.width}x${metadata.height}`,
        codec: metadata.codec,
        fileSize: metadata.fileSize,
      },
    }),
  });
};

2. Video Quality Assessment

const assessVideoQuality = (metadata: VideoInfoResult) => {
  const quality = {
    isHD: metadata.width >= 1280 && metadata.height >= 720,
    isHDR: metadata.isHDR === true,
    hasGoodBitrate: metadata.bitRate > 2000000, // 2 Mbps
    hasAudio: metadata.hasAudio,
  };

  return quality;
};

3. Video Processing Pipeline

const processVideo = async (videoUri: string) => {
  const metadata = await getVideoInfoAsync(videoUri, {});

  if (metadata.duration > 300) {
    // 5 minutes
    throw new Error('Video too long');
  }

  if (!metadata.hasAudio) {
    console.warn('Video has no audio track');
  }

  return {
    metadata,
    requiresProcessing: metadata.width > 1920, // Needs downscaling
  };
};

Troubleshooting

Common Issues

1. "Module not found" error

   • Ensure react-native-nitro-modules is installed
   • Run pod install for iOS
   • Restart Metro bundler

2. "Invalid video source" error

   • Verify the video URI is valid and accessible
   • For local files, ensure proper file permissions
   • For remote videos, check network connectivity

3. Performance issues with large videos

   • Metadata extraction is fast, but consider using worker threads for very large files
   • Cache metadata results when possible

Debugging

Enable debug logging to see detailed information:

const videoInfo = await getVideoInfoAsync(videoUri, {});
console.log('Video metadata:', JSON.stringify(videoInfo, null, 2));

Contributing

We welcome contributions! Please see our Contributing Guide for details.

Development Workflow

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests if applicable
5. Submit a pull request

Code of Conduct

Please read our Code of Conduct before contributing.

License

MIT © Yogesh Solanki

Built with create-react-native-library and powered by Nitro Modules.