[Ardour-Users] time shift when recording from one midi track to another

Robin Gareus robin at gareus.org
Thu Jan 25 15:24:30 PST 2018

On 01/25/2018 11:24 PM, Victor wrote:
> Hi,
> I’m trying to understand the following behavior in Ardour 5.12.0
> 1. Create 2 midi tracks, A and B
> 2. On track A, create a midi region and put 1 note every two beats in it
> (notes aligned to the grid).
> 3. On track B record the midi output of track A.
> I would have expected the resulting region on B to be an exact copy of
> the region on A. Instead, all notes on B are shifted
> slightly before the notes on A. The very first note of A is actually not
> rendered at all on B (maybe because it’d start too early before the B
> region).
> I attach a screenshot.
> Is this a side-effect of read-ahead latency compensation[1]?
> If so, can I set/disable the read-ahead time somewhere in Ardour?


This should already be solved in Ardour6-git (but don't use 6.0-pre for
anything but testing and debugging just yet)

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