How to correct out-of-sync imported MIDI?

[lmv]

I made tracks in another DAW. Then I exported the stems, both audio and MIDI. Then I imported the audio stems into Waveform. Everything sounds exactly the same as in the previous DAW.

Now, I thought I might perhaps replace one of the instruments while working in Waveform. I load the instrument and import the MIDI sequence of that one instrument exported by the other DAW. The new MIDI sequence is very out of sync in relation to its original form. It plays too fast.

Is there any tool in Waveform that will correct that automagically?

[Watchful]

Are the BPMs identical between the two projects?

[lmv]

Yes. Both were 100BPM. When importing, Waveform asks me whether I want to import the BPM or ignore it. Either choice results the same, the beginning of the track is 120BPM then changes to 100BPM after a few seconds. When I noticed that, I just selected the clip and set it to 100BPM, and now it's fixed. Strange.

[Peter Widdicombe]

Was there either a gap before the clip, or a silent part within the clip before the first note event? This may have delayed/confused the import somewhat. Still, something the devs should consider.

[pough]

Did you start off by changing the entire edit from 120bpm to 100bpm? Because it sounds like you left it at 120bpm and then importing a 100bpm MIDI clip added a tempo change "after a few seconds".

[lmv]

Was there either a gap before the clip, or a silent part within the clip before the first note event? This may have delayed/confused the import somewhat. Still, something the devs should consider.

Yes, there was. It is an instrument that only begins to play about half a minute into the song. I have the habit of filling such gaps with empty clips because I exported stems once that ended up misaligned.

Did you start off by changing the entire edit from 120bpm to 100bpm? Because it sounds like you left it at 120bpm and then importing a 100bpm MIDI clip added a tempo change "after a few seconds".

No, I did not do that.

[pough]

Did you start off by changing the entire edit from 120bpm to 100bpm? Because it sounds like you left it at 120bpm and then importing a 100bpm MIDI clip added a tempo change "after a few seconds".

No, I did not do that.

There are two scenarios in there. In the first one, you change the whole edit to 100bpm to start. In the second, you leave it at 120bpm and the act of importing a MIDI clip adds a tempo change to 100bpm. Which one did you do?

[lmv]

When I created a new project in Waveform, I didn't look at the BPM meter so I don't know what was there. Then I opened the Browser, Files tab, navigated to where the .wav stems were and dragged them into the project. Then I probably hit "Save" for the first time and began to "mix" it. I worked on it for a long time and I don't think I ever cared about what the BPM ever was until I decided to import MIDI into it and noticed the out of sync problem in that one track. I never edited the BPM. Maybe Waveform did automatically at some point, maybe it detects the BPM. That is all I know.

[pough]

Importing audio recorded at 100BPM will usually play back sounding like 100BPM no matter what the edit is set to. MIDI is different. If you import MIDI and tell it not to update the edit's BPM then that MIDI clip will play back at the edit's BPM. That will get you the scenario where audio is 100BPM and MIDI is played at the faster 120BPM.

[Watchful]

I think Pough has it right: it sounded to me like a BPM mismatch.