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Questions tagged [mido]

Mido is a Python library for working with MIDI messages and ports. It’s designed to be as straight forward and Pythonic as possible

54 questions
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How to create a nested dictionary from existing dictionary with set and list of tuples

I have parsed a midi file, and I've successfully gotten a dictionary of notes broken up by instrument. An abbreviated example of this is note_dict below, truncated for the purposes of this question. My end goal is to have a nested dictionary that…
Tim
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How can I integrate Python mido and asyncio?

I have a device which does file I/O over MIDI. I have a script using Mido that downloads files but it is a mess of global variables. I want to tidy it up to use asyncio properly but I am not sure how to integrate the mido callback. I think the…
Mark Green
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python mido how to get [note, starttime, stoptime, track] in a list?

I need help in the following: I am designing a new music notation. I want to read a midi file and get a list that contains every note/start-stop-time/track. Desired result: [[60, 0, 0.25, 1], [62, 0.25, 0.50, 1]]# the format is [note, start-time,…
Philip Bergwerf
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Mido - How to get midi data in realtime from different ports

I have created 2 ports as input, to capture data from a keyboard and a midi surface controller (which has a bunch of sliders and knobs). Although I am not sure how to get data from both for msg1 in input_hw: if not msg1.type == "clock": …
user9990443
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1 answer

How to set ticks_per_beat under MIDO to a new MIDI file?

Reading ticks_per_beat under MIDO can be done via mid.ticks_per_beat. However, if I want to save the value of ticks_per_beat (e.g., 120 or 480) to a new MIDI file, how it can be done? (p.s. I can set "time signature" or "tempo" as follows. But, it…
Frank
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Convert time/tick in Python MIDI MIDO read/save file

The following program uses MIDO to read 'g1.mid' then save it to 'g1_new.mid'. My question is that: in reading the file, 'msg.time' is a float value, but in saving the file, 'time in Message' is an integer in tick. How do we convert 'msg.time' to…
Frank
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Outputting MIDI sound from Python Mido library on Mac

I'm trying to output a note to my computers internal speakers using python with the mido library. I have a mac, and I've learned that by default you need to go through the IAC Driver to output any sound to the speakers. I enable the IAC Driver and…
Eric S
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"PortMidi: `Bad pointer'" when closing mido port

My code: import mido import time mido.set_backend('mido.backends.pygame') output = mido.open_output() output.send(mido.Message('note_on', note=64, velocity=60)) time.sleep(3) output.close() After the last line, the following error is…
Aviv Cohn
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Extracting actual note starting time from midi files

I am trying to make a midi file parser that outputs something of shape [Songs, track_data], where each track_data contains it's song name and track's beats. Each beat contaings it's notes [semitone, octave] and the temporal distance in milliseconds…
Maxim Mashkov
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Problem with MultiPort use in python mido MIDI package

I am working in a program that autosaves MIDI messages as they are played, and everything is working really well when using a single input port. I want to extend to use 2 or 3 simultaneous ports (the app is aimed at VST piano players, and some use…
autosave midi
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Python: How to label .midi file using MIDO library

I have these .midi files and I want to label them with pitch (in MIDI numbers) per 0.032 second. Example of the label I desired can be found here. In this task, I use Python mido library, the docs can be found here. From what I know now, I need to…
Dionisius Pratama
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Why is ticks per beat a big number and time very small?

My midifile looks like this: note_on channel=0 note=75 velocity=62 time=0 note_off channel=0 note=75 velocity=0 time=0.20833324999999997 note_on channel=0 note=76 velocity=62 time=0 note_off channel=0 note=76 velocity=0…
Philip Bergwerf
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Music21: get track index of a note

I have a multi-track midi file that I'm reading with music21: import music21 f = music21.midi.MidiFile() f.open('1079-02.mid') f.read() stream = music21.midi.translate.midiFileToStream(f).flat note_filter =…
duhaime
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Popping Messages from MIDI Tracks

I have type 0 MIDI file, containing the track with only 269 meta-messages that I'd like to keep the header chunk and the last one for the end of the file. for i, msg in enumerate(mid.tracks[0]): if i > 10 or i < len(mid.tracks[0])-1: if…
chikitin
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Question with python, music and events, is there a more elegant way of programming this?

Goal: To create a program that will be able to turn off and on lights to music based on events that are triggered from midi notes. Hello all, I am hoping that this isn't too broad of a question to ask. I am working on a project where I get events…
nmendez
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