stremio / mediainfo.js

MediaInfo ported to the web using emscripten

mediainfo.js

This is a JavaScript port of the excellent MediaInfoLib and can run directly in a browser or in Node.js. It is transpiled from C++ source code using Emscripten.

Demo

Try mediainfo.js in your browser: https://mediainfo.js.org

Usage

import MediaInfoFactory from 'mediainfo.js'

MediaInfoFactory().then((mediainfo) => {
  mediainfo.analyzeFile(...)
})

See the API docs for detailed instructions.

Browser

You can either use a CDN to include the script file directly in your page or use a JavaScript bundler like webpack.

• CDN:
  <script type="text/javascript" src="https://unpkg.com/mediainfo.js"></script>
• Bundler: npm install mediainfo.js

WASM file loading

Be aware that mediainfo.js needs to load the MediaInfoModule.wasm file (around 3.5 MiB). The WASM module is loaded and instantiated automatically. By default its load path is determined from the script location. This works out-of-the-box for the UMD and Node.js version.

❗️ If using a bundler, you need to ensure the module loader can fetch the WASM file by configuring your bundler/web server accordingly (examples).

Note that you can override the WASM file location by specifying a custom locateFile function to MediaInfoFactory.

Node.js

Install mediainfo.js from NPM.

$ npm install -g mediainfo.js

It can be used as a CLI from the shell.

$ mediainfo.js /path/to/media.avi

Or use it as a library.

Examples

• Browser UMD via CDN
• CDN (CodePen)
• Vite/React
• Webpack/React
• Angular
• Node.js

Build

Install Emscripten preferably using Emscripten SDK.

$ git clone https://github.com/emscripten-core/emsdk.git
$ cd emsdk
$ ./emsdk install latest
$ ./emsdk activate latest
$ source ./emsdk_env.sh

In the project root of mediainfo.js run the following to build.

$ pnpm install
$ pnpm build

Find the resulting files in the dist directory.

Tests

You can run a test suite against the dist build.

$ pnpm test

License

This program is freeware under BSD-2-Clause license conditions: MediaInfo(Lib) License

This product uses MediaInfo library, Copyright (c) 2002-2023 MediaArea.net SARL.