@wasm-zoo/ffmpeg

Unofficial WASM Zoo distribution of the upstream FFmpeg ffmpeg CLI for browsers. This package is backed by FFmpeg 9.0.2, Zoo builder 0.2.8, and the reviewed browser-full Release asset.

Install

npm install @wasm-zoo/ffmpeg

Use

import { load } from "@wasm-zoo/ffmpeg";

const ffmpeg = await load();
try {
  const result = await ffmpeg.exec([
    "-i", "/input.mp4",
    "-c", "copy",
    "/output.mp4"
  ], {
    files: [{ name: "/input.mp4", data: inputBytes }],
    outputs: ["/output.mp4"]
  });
  console.log(result.files[0]);
} finally {
  ffmpeg.dispose();
}

The default entry imports the reviewed browser wrapper and uses static new URL(..., import.meta.url) references so modern bundlers can emit ffmpeg-core.js, ffmpeg-core.wasm. For manual/self-hosted deployments use @wasm-zoo/ffmpeg/self-hosted and the Consumer API v1 baseUrl contract.

This npm package intentionally bundles only the LGPL browser-full profile. It uses pthreads and WebAssembly SIMD, so the hosting page must be cross-origin isolated and provide SharedArrayBuffer. The separate browser-full-gpl/libx264 Release profile is not bundled into this npm package.