Copy midi between tracks with different tempo

[Livealot]

I'm trying to copy midi from a track with lots of tempo changes to a track with a constant tempo. The trick is how not to lose all the length variation.

Here's the scenario. I composed a midi track using all eighth notes. To make it more expressive, I then created lots of tempo sections (slower, faster, acceleration, deceleration). Let's call this the "performance" track.

If I copy this midi to a new track with constant tempo, I lose the "performance" and get the original static eighth notes.

Basically, I'm hoping there's a way to convert the original eighth notes to their tempo adjusted lengths in the new track.

One approach is to render the performance track, and then paste the audio into the new track. But this loses the midi values.

I've attached an example where you can "see" the performance with different lengths visually. So I'm hoping there's an easy way to convert the visuals to corresponding note lengths in a new track.

[heda]

you can make the midi item to ignore tempo changes in the item properties, then remove the tempo map envelope changes, the timing is preserved, and then glue the item. now it will adapt to any constant tempo you paste it into.

[Livealot]

Originally Posted by heda

you can make the midi item to ignore tempo changes in the item properties

Maybe I don't understand where to change this. When I went to Item Properties > Properties > and ticked Ignore project tempo, that just converted the "performance" back to the static eighth notes.

Or maybe I have the selection wrong. For testing, I just created a single midi take of 4 notes, and am looping that throughout. So maybe I need to identify the "performance" as a separate take somehow

[heda]

oops sorry... forget about the ignore tempo in item properties...
in this case you have to use the action from SWS "SWS/BR: Enable "Ignore project tempo" for selected MIDI items preserving time position of MIDI events (use tempo at item's start)"

then delete tempos to be a constant tempo... and glue the item.

[Livealot]

Originally Posted by heda

use the action from SWS .

ahh, so not basic Reaper. I'll import SWS and give that a try. Thanks for the tip.