Re: [LAU] Rosegarden -> lilypond help

Hi,

On 15/12/11 22:02, gene heskett wrote:
> Greetings everybody, midi folks in particular;
>
> I have a .mid file that plays using the wrong instruments because it was
> composed before GM.
>
> Sent to the built in synth in an audigy2, it plays at normal speed but
> wrong instruments.
>
> Loaded into rosegarden (to fix this), it plays at about 1/100th speed.
> This doesn't surprise me too much as the originating program dates to 1991
> on a TRS-80 Color Computer 3& GM was something we only got in the then
> brand new Sound Canvas's and such. Obviously something in the header
> doesn't meet .mid file specs. I did change the internal name from .ume to
> .mid in a hex editor, and reloaded but other than the track title now
> showing the correct string, no other effect.
>
> In an effort to see what might be wrong, I fired up the print preview which
> uses lilypond to generate the 'sheet' music. But from the looks of it, its
> going to use 80% of all 4 cores of this phenom for several hours to render,
> probably because of this same time error, (transport says its like nearly 3
> hours long, but its a bit over 3 mins in actual play time) so the generated
> pdf is likely to be 40Gb!
>
> Does anyone know enough about this to tell me where, in rosegarden, to fix
> this? Or do I need the hex editor again? Or, heaven forbid, its a bug in
> rosegarden (shudder).
>
> Thanks midi folks.
>
> Cheers, Gene
Maybe something like midicomp [1] could be useful to dig into the file
and see where the tempo problem is generated... It will convert midi
to/from human readable text.

Lorenzo.

[1] https://github.com/markc/midicomp

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Received on Fri Dec 16 12:15:01 2011