A browser-based video editor that renders videos directly with FFmpeg

In plain words

Weave is a browser-based video editor built with React that lets users perform basic video editing tasks like trimming, stitching, transitions, and audio mixing on a multi-track timeline. The editor generates FFmpeg commands to render the final video, with an in-browser preview that approximates the output. Designed as a prototype, it offers a code-focused approach to video editing for developers and technical users who want direct control over FFmpeg parameters.

written from the facts on this page · September 2026

From the sources

Weave is a browser-based video editor that renders videos directly with FFmpeg - thiagoalbrecht/weave

Weave is a browser-based timeline editor. You arrange clips on a timeline; Weave serializes that timeline to a composition JSON document and compiles it into a single ffmpeg command. pnpm install pnpm run dev How it works Edit : Drag clips on a multi-track timeline (trims, fades, layouts, masks, transitions, color EQ). Compose : The editor builds a CompositionDocument that describes layers, clip timing, and effects. Preview : CompositionPreview plays that document in the browser by approximating ffmpeg behavior with React, CSS (opacity, masks, transforms), and SVG filters (e.g. color EQ). Render : The same document is translated into a single ffmpeg argv. You can run it with ffmpeg.wasm in…from github.com

In the maker’s words, at launch

Weave is a React app that provides a multi-track timeline editor to perform basic video edits like trimming, stitching, transitions, audio tracks etc. which maps directly to an FFmpeg command to render the video. I tried my best to have the React "video" preview closely replicate the FFmpeg lavfi filtergraph output…

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  VidStudio, a browser based video editor that doesn't upload your filesApr 2026 · vidstudio.app · ▲301

  Hi HN, I built VidStudio, a privacy focused video editor that runs in the browser. I tried to keep it as frictionless as possible, so there are no accounts and no uploads. Everything is persisted on your machine. Some of the features: multi-track timeline, frame accurate seek, MP4 export, audio, video, image, and text tracks, and a WebGL backed canvas where available. It also works on mobile. Under the hood, WebCodecs handles frame decode for timeline playback and scrubbing, which is what makes seeking responsive since decode runs on the hardware decoder when the browser supports it. FFmpeg…

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