Thank you: the two chevrons were very well hidden and I would not have noticed (I am using a laptop)
I switched to Option/Audio/[DirectSound] Default Playback Device instead of the default [DirectSound] Speaker/Headphone (RealTek...
I noticed Record works (never tried that before) but not Add Narration (Record Sound over Video) -- I continue to get the same error : Unable to start recording...check device...
with the Devices set to [Default Sound In] Windows Record Mixer.
And there I found it!!! I changed file destination of My Audio to .C:\...Downloads;
so the problem has nothing to do withVideoPad's error message and everything with VideoPad not being able to access directories!!!
Thanks for indulging me! (and we hope someone improves the error messages)
-----------------------------------------------
PS: I observe great variability in the length of the mp4 output - I am recording 45 min lessons for covid-classes
and have one of length 1745057098 and the other of length 6366973086 and students groan when they try to download the 2nd (sure I now know one has to break them into 15 min pieces) but any clue what influences such variability?