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Replace !! operators with proper null checks to prevent NullPointerExceptions when encodedFormat or muxerContext are null. This can happen if createNextMuxer is called before onOutputFormatChanged sets the format. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Features
VisionCamera is a powerful, high-performance Camera library for React Native. It features:
- 📸 Photo and Video capture
- 👁️ QR/Barcode scanner
- 📱 Customizable devices and multi-cameras ("fish-eye" zoom)
- 🎞️ Customizable resolutions and aspect-ratios (4k/8k images)
- ⏱️ Customizable FPS (30..240 FPS)
- 🧩 Frame Processors (JS worklets to run facial recognition, AI object detection, realtime video chats, ...)
- 🔍 Smooth zooming (Reanimated)
- ⏯️ Fast pause and resume
- 🌓 HDR & Night modes
- ⚡ Custom C++/GPU accelerated video pipeline (OpenGL)
Install VisionCamera from npm:
npm i react-native-vision-camera
cd ios && pod install
..and get started by setting up permissions!
Documentation
ShadowLens
To see VisionCamera in action, check out ShadowLens!
Example
function App() {
const device = useCameraDevice('back')
if (device == null) return <NoCameraErrorView />
return (
<Camera
style={StyleSheet.absoluteFill}
device={device}
isActive={true}
/>
)
}
See the example app
Adopting at scale
VisionCamera is provided as is, I work on it in my free time.
If you're integrating VisionCamera in a production app, consider funding this project and contact me to receive premium enterprise support, help with issues, prioritize bugfixes, request features, help at integrating VisionCamera and/or Frame Processors, and more.
Socials
- 🐦 Follow me on Twitter for updates
- 📝 Check out my blog for examples and experiments
- 💬 Join the Margelo Community Discord for chatting about VisionCamera
- 💖 Sponsor me on GitHub to support my work
- 🍪 Buy me a Ko-Fi to support my work