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0.0.1 • Public • Published


A browser-based WebGL music visualizer based on Milkdrop / projectM

Live Demo: http://gattis.github.io/milkshake/

Copyright (C) 2011 Matt Gattis and contributors http://github.com/gattis/milkshake


milkshake is a broswer-based music visualizer implemented using WebGL APIs available in the latest browsers. It is a rendering engine which takes in preset scripts and outputs visualizations that sync in various ways with music. The preset format comes from MilkDrop, which was a rendering engine built with DirectX as a WinAmp plug-in (Windows only). projectM is a reimplementation of MilkDrop using OpenGL 1.0. milkshake is yet another reimplementation using WebGL, which is a browser-based implementation of OpenGL 2.0 ES. The main difference in implementations, besides being written in javascript, is that WebGL (OpenGL ES 2.0) has no fixed function pipeline like OpenGL 1.0, so all of that functionality has to be emulated in programmable shaders.

milkshake is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.


See milkshake.html for an example installation.


The presets are stored in Presets.js. They are very similar to milkdrop presets, except they are formatted in JSON. The convert_preset.py script is a handy tool to convert your favority mildrop presets. Most milkdrop presets are now working, and I've included a nice set of working ones already in Presets.js.


By default, the SoundCloud API is used to provide music using the SoundCloudAudio.js backend, which depends on Flash. The other backend available is HTML5Audio.js, which can play MP3 encoded audio in Chrome and Ogg Vorbis encoded audio in Firefox. More backends will be added in the future. A brief status of future backends: Rdio: Music is available via their Web playback API, but raw data is only frequency-domain. Spotify: No browser-based API available yet (?) Local uploads: Available via the new File API. In development.





npm i milkdrop

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