etro-js/etro

Health v2 · maintenance only

Adoption not part of the score

1148 stars · 97 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Etro is a framework-agnostic TypeScript library for programmatically editing videos in the browser. It composites video, audio, image, and text layers, applies hardware-accelerated GLSL filters, and can play, stream via WebRTC, or record the result to a blob.

Use cases

• edit videos programmatically in the browser
• composite video and audio layers with text overlays
• apply GLSL filters and effects to video
• record a canvas movie to a downloadable video blob
• build a webcam filter app in React
• chroma key a green screen video in the browser
• stream a composed video with WebRTC
• animate layer properties with keyframes

When to choose

• you need client-side, in-browser video editing without a server
• you want to composite multiple media layers with custom GLSL effects
• you need framework-agnostic code usable with React, Vue, Svelte, or plain JS
• you want to play, stream, or record composed video directly from the browser

When to avoid

• you need offline (faster-than-realtime) rendering, which is not yet supported
• you need server-side or heavy-duty video encoding pipelines better suited to ffmpeg
• you need a GUI video editor rather than a code API
• GPL-3.0 licensing is incompatible with your project

Facets

library · maturity active

video-processing audio-processing image-processing graphics media web-development frontend browser cross-platform video-editing glsl webgl typescript canvas webrtc keyframes chroma-key framework-agnostic video nodejs

Member repositories

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