When I generate midi with my script, the notes slow down exponentially when played

[LodenRietveld]

I wrote a script to generate drum patterns that I use frequently, but when I try to play the midi files I generated, they slow down instead of keeping the same pace. I can't find out if I made an error or if I just don't understand the way midi is in encoded and it's very frustrating.

This is my code: mid.txt

[semininja]

It sounds like you have your tick counts in absolute when they need to be relative. I'll take a look at the code in a bit, but that's my guess for the moment.

On Sep 21, 2016 16:23, "Loden Rietveld" [email protected] wrote:

I wrote a script to generate drum patterns that I use frequently, but when I try to play the midi files I generated, they slow down instead of keeping the same pace. I can't find out if I made an error or if I just don't understand the way midi is in encoded and it's very frustrating.

This is my code: mid.txt https://github.com/vishnubob/python-midi/files/485982/mid.txt

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[vishnubob]

seconded

[LodenRietveld]

yeah I changed it too, but it still happens with pattern/track.make_ticks_rel()

[MaurizioB]

Try creating the tracks using

track = midi.Track(tick_relative=False)

and remember that pattern.make_ticks_rel() has to be used after you added every event, including EndOfTrack events.