Issue 125 in mingus: MidiFileIn shifts rhythm

[min...@googlecode.com]

Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 125 by maia...@gmail.com: MidiFileIn shifts rhythm
https://code.google.com/p/mingus/issues/detail?id=125

What steps will reproduce the problem?
1. create midi file in Sibelius or similar
2. make composition/bmp tuple with
MidiFileIn.MIDI_to_Composition("mymidi.mid")
3. isolate composition (comp =
MidiFileIn.MIDI_to_Composition("mymidi.mid")[0]
4. write composition back to Midi
(MidiFileOut.write_Composition("target.mid", comp)
5. open midi with a score viewer, play back, etc.--output is incorrect!

What is the expected output? What do you see instead?
Expected: same as input (see:
http://www.mediafire.com/view/n17lp96bob53n05/mingusbug%20input.png )
Result instead: all notes are preserved, but all rhythms are shifted
forward by one, with a quarter inserted at the beginning. (See:
http://www.mediafire.com/view/5rc5s7q8m297z7q/mingusbug%20output.png )

What version of the product are you using? On what operating system?
Mingus 0.4.2.3 on Mac OSX (10.9.4) with Python 2.7.8

Please provide any additional information below.


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