Ndst in ./src/lldcore/intensity.cpp about opensmile HOT 2 OPEN

Have you tried with different frameSize/frameStep settings to see for which you get the described behaviour? I would also check which of the three values (Nsrc, nWin and Ndst) becomes 1 and traceback in source where that value comes from.

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The problem is defo 'Ndst' (or the logic of using it in that line), the other 2 get set to the correct values

I just tried with :
frameSize = 0.01, frameStep = 0 (so will match frameSize) - no change, Nsrc and Nwin are 160, Ndst is 1 for all windows
frameSize = 0.1, frameStep = 0 (so will match frameSize) - no change, Nsrc and Nwin are 1600, Ndst is 1 for all windows
frameSize = 1, frameStep = 0.5 - no change, Nsrc and Nwin are 16000, Ndst is 1 for all windows

Unfortunately I haven't worked out where the Ndst is being set, I'm assuming there's a loop over the windows set up with frameSize and frameStep and because there's just one output value, Ndst ends up as 1.
likely candidates I guess are:
./src/core/winToVecProcessor.cpp
./src/dspcore/windower.cpp
but not sure atm.

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