Neelansh Sethi

Senior Software Engineer - Invideo

Hi, I’m Neelansh. I’ve been a software engineer for a little over 6 years now, and my work has mostly been with product-based startups where you get to wear many hats and figure things out on the fly. Most recently, I’ve been part of the InVideo mobile team, working hands-on with the Rust video engine that powers our Flutter apps on Android and iOS. Before that, I worked with Bounce, a shared mobility startup, and Backstage, where I built and scaled mobile products in fast-paced environments. I also really enjoy being part of the developer community, learning from others, and sharing back whatever I can along the way. Socials: GitHub: https://github.com/Neelansh-ns X: https://x.com/neelansh_ns LinkedIn: https://www.linkedin.com/in/neelanshsethi

Building a cross‑platform native rendering engine in Rust for Flutter

This session walks through how we embedded a single Rust video engine across iOS and Android in a production Flutter app. We'll cover Flutter's PlatformView to host a native GL surface, MethodChannel to control the engine (passing events), and 'flutter_rust_bridge' to stream events from Rust back to Dart. We would talk about plugging Notan’s renderer into Flutter’s texture surface and triggering each frame from Flutter. Inside that frame, we would use Notan with the egui plugin to draw simple UI directly from Rust. Flutter displays the final texture, while all the UI rendering happens quietly behind the scenes. We'll show how we integrate Rust with Flutter for a smooth video-playing experience. We'll close with a quick demo of a Flutter app driving Rust and receiving live events. Key takeaways for the audience: • How to structure a single Rust engine for Android/iOS/Web. • Practical Flutter integration: 'PlatformView' for native GL, 'MethodChannel' for commands, FRB for event streams. • Simple UI overlays with egui.