<script> const b64 = "TVRoZAAAAA..."; // your full base64 string const binary = atob(b64); const arrayBuffer = new ArrayBuffer(binary.length); const view = new Uint8Array(arrayBuffer); for (let i = 0; i < binary.length; i++) view[i] = binary.charCodeAt(i); const blob = new Blob([arrayBuffer], type: 'audio/midi' ); const url = URL.createObjectURL(blob); new Audio(url).play(); </script> import base64, json with open('melody.mid', 'rb') as f: b64_midi = base64.b64encode(f.read()).decode('ascii')
is a text encoding scheme that converts binary data into ASCII characters (A–Z, a–z, 0–9, +, /, =).
with open('song_package.json', 'w') as out: json.dump(song_data, out) midi to base64
certutil -encode my_song.mid output.txt (Then remove the -----BEGIN CERTIFICATE----- lines manually.) Python (most common) import base64 Read MIDI file as binary with open('song.mid', 'rb') as f: midi_bytes = f.read() Encode to Base64 string b64_string = base64.b64encode(midi_bytes).decode('utf-8')
base64 my_song.mid
MIDI (Musical Instrument Digital Interface) is a binary file format ( .mid or .midi ) that stores musical performance data: notes, timing, tempo, instruments, etc.
print(b64_string[:100]) # preview decoded_bytes = base64.b64decode(b64_string) with open('restored.mid', 'wb') as f: f.write(decoded_bytes) JavaScript (Node.js) const fs = require('fs'); const midiBuffer = fs.readFileSync('song.mid'); const base64String = midiBuffer.toString('base64'); <script> const b64 = "TVRoZAAAAA
song_data = "title": "My Melody", "composer": "Anonymous", "midi_base64": b64_midi