Install#

Requirements#

• Node 24+
• pnpm 10.33+
• Emscripten SDK with emcc, em++, emar, and emranlib
• Autotools, make, pkg-config, nasm, and yasm
• Native ffmpeg for verification fixtures and the playground sample video

On macOS:

brew install autoconf automake ffmpeg libtool nasm pkg-config yasm

Build#

pnpm install
pnpm build

Generated assets are written to dist/. Compiled TypeScript entrypoints are written to lib/.

Smoke Check#

pnpm verify
pnpm playground:e2e

pnpm verify exercises the wasm wrapper against generated media fixtures. pnpm playground:e2e launches Chrome, loads the local media playground, renders a smaller MP4 and MP3, and writes .tmp/playground-e2e.png.