there is a field in the MIDI output of pianoteq called "Sequencer specific" that occurs before the note on/off and controller events.  my understanding is that this gives some extra info for vendor-specific data.  for example i see in one file (after converting to text)

1, 0, Sequencer_specific, 16, 153, 36, 118, 133, 1, 0, 0, 0, 0, 0, 192, 156, 232, 161, 214, 65

is there any reference for what these values mean?  the only reason i ask is that i want to computer-generate some MIDI files to feed into pianoteq and don't know if i should worry about this data.  can it just be omitted and pianoteq will still handle the file correctly?

In the midicsv doc that you probably used to get this string, it says:

"The Sequencer_specific meta-event is used to store vendor-proprietary data in a MIDI file"

Pianoteq generates this string along with other info like the preset name only as version information I think. It's not documented, so I'm just guessing. In a past project, I generated a lot of MIDI files for Pianoteq devoid of this construct without any problem. Also, Pianoteq accepts any MIDI file found on the web.

If you look at a MIDI file generated by Organteq you will also see this same id string, along with a lot of System_exclusive  data.

1, 0, Sequencer_specific, 16, 153, 36, 118, 133, 1, 0, 0, 0, 0, 0, 192, 156, 232, 161, 214, 65

is there any reference for what these values mean?  the only reason i ask is that i want to computer-generate some MIDI files to feed into pianoteq and don't know if i should worry about this data.  can it just be omitted and pianoteq will still handle the file correctly?