FFmpeg.wasm
The same FFmpeg that powers Hollywood's render farms, cross-compiled to WebAssembly.
Decode in the browser, edit in the browser, color grade in the browser, encode in the browser. Flowcut is what becomes possible when SharedArrayBuffer + WebAssembly + FFmpeg cross-compile mature enough to run a real NLE without a native app. The cut, the grade, the scopes, the export — every stage runs in your tab. Nothing uploads, nothing installs, nothing fragments across OS versions.
The browser is already a world-class video player. We use that as the decode layer — H.264, H.265, VP9, AV1 all parse without a native dependency.
Real NLE features: ripple edits, magnetic snap, transitions, LUT import, scopes.
The same FFmpeg that powers Hollywood's render farms, cross-compiled to WebAssembly.
Projects survive reloads. Close the tab, come back, the timeline is there.
Native apps fragment. The subscription NLE's installer is over a gigabyte and requires admin rights. The free app needs a desktop install or a phone install and uploads your A-roll. Browser editors mean the editor is always the latest version, runs on any OS, and the project survives moving from your laptop to a borrowed Chromebook in a coffee shop.
Yes. The decoder is browser-native (HTML video / Web Codecs), the editor is React + Canvas, the encoder is FFmpeg.wasm via SharedArrayBuffer. No server, no native install.
Chrome, Edge, Firefox, Safari (16.4+). Safari has weaker SharedArrayBuffer support — works, but slower exports. Chrome is the fastest path today.
No fixed cap. Practical limits are device RAM and IndexedDB quota — typically several GB on a modern laptop. Phones can edit 1080p comfortably.
Because installing software requires admin rights you might not have, and updates fragment across versions. Browser editors are always the latest version, work on any OS, and your project lives on your machine via IndexedDB.
On 1080p, comparable for most ops. The desktop NLEs have a 20-year lead on render optimization, GPU-accelerated effects, and complex compositing. For straight cuts, color, and export — Flowcut is in the same league.
Yes — touch timeline, mobile-tuned exports.