$ npm install react-native-video-trimmer --save

$ react-native link react-native-video-trimmer

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-video-trimmer and add RNVideoTrimmer.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNVideoTrimmer.a to your project's Build Phases ➜ Link Binary With Libraries
4. cd ios
5. create Podfile sample Podfile https://facebook.github.io/react-native/docs/integration-with-existing-apps
6. add pod 'ICGVideoTrimmer', :git => 'https://github.com/nixplay/ICGVideoTrimmer.git' to Podfile
7. run pod install

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.reactlibrary.RNVideoTrimmerPackage; to the imports at the top of the file
• Add new RNVideoTrimmerPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-video-trimmer'
   project(':react-native-video-trimmer').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-video-trimmer/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-video-trimmer')
   

Read it! :D

1. In Visual Studio add the RNVideoTrimmer.sln in node_modules/react-native-video-trimmer/windows/RNVideoTrimmer.sln folder to their solution, reference from their app.
2. Open up your MainPage.cs app

• Add using Video.Trimmer.RNVideoTrimmer; to the usings at the top of the file
• Add new RNVideoTrimmerPackage() to the List<IReactPackage> returned by the Packages method

import RNVideoTrimmer from 'react-native-video-trimmer';

// TODO: What to do with the module?
RNVideoTrimmer;