Extract Minecraft music

README.md

Extract Minecraft music

As of 1.8, assets are stored by hash, which makes it fiddly to listen to Minecraft's amazing ambient soundtrack outside the game.

This script can be used to copy music files to appopriately-named and organised .ogg files for easier listening.

1. Install Node.js or io.js

2. Save extract-music.js to your Minecraft assets directory:

• Windows: %AppData%\.minecraft\assets
• Linux: ~/.minecraft/assets
• OS X: ~/Library/Application Support/minecraft/assets

3. Install dependencies

npm install fs-extra

4. Run the script

node extract-music.js

You should see output similar to this, after which .ogg files will be available in a new sounds/ directory:

./objects/87/87722a59c8d488370f3d430cd4c97a3161081785 -> ./sounds/music/menu/menu3.ogg
./objects/df/df1ff11b79757432c5c3f279e5ecde7b63ceda64 -> ./sounds/music/game/hal1.ogg
./objects/62/6254527d626a2c7d80901cc2e62dce3ba4bd81f6 -> ./sounds/music/game/creative/creative6.ogg
...

5. Listen!

extract-music.js

var fs = require('fs-extra')

var objects = require('./indexes/1.8.json').objects

for (var filePath in objects) {
  if (!/\/(?:music|records)\//.test(filePath)) continue

  var copyPath = filePath.replace('minecraft/', './')
  var hash = objects[filePath].hash
  var objectPath = './objects/' + hash.substring(0, 2) + '/' + hash
  console.log(objectPath, '->', copyPath)
  fs.copySync(objectPath, copyPath)
}

Ummmmmmm...... If i wanted the ambience too what changes would i have to make to the extract-music.js code?

No changes need to be made since all music and sounds are extracted from the assets file, but it depends on what version you want to extract the music from, If you need it from a specific version of minecraft such as 1.7 just change the line with 1.12.json to 1.7.json or if you want the sounds from 1.8+ then substitute that for 1.12.json