QuickEditVideo: A video editor that runs fully in browser

Modern browsers now expose primitives like WebCodecs, WebAssembly, OffscreenCanvas, SharedArrayBuffer, and local file access.

I was curious how far these could be pushed for basic video editing without requiring installs, accounts, or uploads.

As an experiment, I built a small in-browser video editor.

Scope is intentionally minimal: load local video/audio, trim and position clips on a timeline, add simple text overlays and export the result. This is not meant to replace professional tools. The goal was to explore whether zero-setup, browser-only editing is practical with current web APIs.

Demo: https://quickeditvideo.com/app/

I’d appreciate technical feedback, performance concerns, or pointers to similar projects I should study.