MIDI Note Velocity Not Detected

[nguyer]

Describe the bug
FreeShow does not seem to be able to detect MIDI note velocity to change to a specific slide index.

Reproducing
I have reproduced this behavior on version 1.5.9 for Windows and macOS. I have also verified the behavior is the same in 1.6.0-beta.3 on Windows.

• Set up something to send MIDI notes with a specific velocity to a MIDI port that FreeShow can receive on. In my case, I'm using Ableton Live 10 through rtpMIDI.
• Configure a Function in FreeShow to "Play slide at index" triggered by MIDI
• Optional: set up MidiView to verify MIDI notes are received with correct velocity
• Send a MIDI note C-2 with a certain velocity (e.g. 3 to change to the third slide)
• Observe the toast in FreeShow that says velocity is not detected
• The slide always changes to the first index in the current show (as expected when no velocity information is available)

Screenshots
Configuration of my Function in Freeshow:

Verification of MIDI note C-2 received with velocity 3:

Toast showing velocity was not detected:

Version (Optional)

• OS: Windows 11, macOS
• FreeShow Version: 1.5.9, 1.6.0-beta.3

Additional Context
This looks like the relevant function: https://github.com/ChurchApps/FreeShow/blob/main/src/frontend/components/actions/midi.ts#L14-L60

[mwb9aa]

Are you able to change to a specific schedule item by using the velocity? Did you try changing Ableton up an octave without changing the FreeShow action? Are you using rtpMIDI to talk to the computers across a network or as loop back? (That is, are you doing Mac to Windows or Windows to Windows?)

[nguyer]

Thanks for the ideas. Here's what I've tested:

Are you able to change to a specific schedule item by using the velocity?
No. Creating an action to change to a specific item (Open project item at index) results in the same toast, and always goes to the first item in the project.

Did you try changing Ableton up an octave without changing the FreeShow action?
Yes. I can change the octave in Ableton and the notes are no longer seen by FreeShow. If I also change the action in FreeShow to look for C-1 (12) it sees the notes again but the behavior is the same - no velocity detected.

Are you using rtpMIDI to talk to the computers across a network or as loop back? (That is, are you doing Mac to Windows or Windows to Windows?)
I've actually tried several different configurations of this, including just using loopMIDI to cut out the networking entirely. So I've tested:

• Ableton Live on Windows -> FreeShow on Windows (same machine) with loopMIDI
• Ableton Live on Windows -> FreeShow on Windows (same machine with rtpMIDI
• Ableton Live on Windows -> FreeShow macOS with rtpMIDI
• LoopyPro on iPad -> FreeShow on Windows over rtpMIDI

All of these result in the same behavior. I can see the velocity is being sent when I inspect it with MidiView but FreeShow always pops up the toast saying it didn't receive velocity.