Build a Live Streaming App
Complete Technical Guide

import { RNCamera } from 'react-native-camera';
import { useState } from 'react';

export default function BroadcastScreen() {
  const [isStreaming, setIsStreaming] = useState(false);

  const startStream = async (camera) => {
    setIsStreaming(true);

    // Configure RTMP stream
    const options = {
      quality: RNCamera.Constants.VideoQuality['720p'],
      videoBitrate: 3000000, // 3 Mbps
      fps: 30,
      codec: 'h264',
      streamUrl: 'rtmp://your-server.com/live/stream-key'
    };

    try {
      await camera.recordAsync(options);
    } catch (error) {
      console.error('Streaming failed:', error);
      setIsStreaming(false);
    }
  };

  return (
    <RNCamera
      style={{ flex: 1 }}
      type={RNCamera.Constants.Type.back}
      captureAudio={true}
      androidCameraPermissionOptions={{
        title: 'Permission to use camera',
        message: 'We need access to broadcast'
      }}
    >
      {({ camera }) => (
        <Button
          onPress={() => startStream(camera)}
          disabled={isStreaming}
        >
          {isStreaming ? 'Streaming...' : 'Go Live'}
        </Button>
      )}
    </RNCamera>
  );
}

Source: react-native-camera documentation