MP3 Output

[Zeyu-Li]

Is there an easy way of writing a mp3 file instead of midi?

[pyquest]

building on the example file given with the repository

#!/usr/bin/env python

from midiutil import MIDIFile

degrees  = [60, 62, 64, 65, 67, 69, 71, 72]  # MIDI note number
track    = 0
channel  = 0
time     = 0    # In beats
duration = 1    # In beats
tempo    = 60   # In BPM
volume   = 100  # 0-127, as per the MIDI standard

MyMIDI = MIDIFile(1)  # One track, defaults to format 1 (tempo track is created
                      # automatically)
MyMIDI.addTempo(track, time, tempo)

for i, pitch in enumerate(degrees):
    MyMIDI.addNote(track, channel, pitch, time + i, duration, volume)

with open("major-scale.mid", "wb") as output_file:
    MyMIDI.writeFile(output_file)

adding this code onto the end will give you the needed mp3.

import os
mp3 = "timidity major-scale.mid -Ow -o - | ffmpeg -i - -acodec libmp3lame -ab 64k major-scale.mp3"
print(mp3)
pmp3 = os.popen(mp3)
print(pmp3.read())
print(pmp3.close())

it uses a terminal command:

timidity major-scale.mid -Ow -o - | ffmpeg -i - -acodec libmp3lame -ab 64k major-scale.mp3

which uses ffmpeg to convert the midi file into an mp3 which I took from this blog.

Convert Midi to mp3 in Ubuntu - http://stepsilon.com/ubuntu/convert-midi-mp3-ubuntu

so you still have the midi file which you can manually delete or add this second block of code to delete the midi file.

remove = "rm *.midi"
print(remove)
prem = os.popen(remove)
print(prem.read())
print(prem.close())