One other thing to remember... the very early hand cranked cameras gave some
freedom to the operator to crank at different speeds.  If they got excited...
I believe they cranked at bit faster... wouldn't you?
 
Second point... on the pull back up on any crank the speed would be faster...
ever use rewinds on a bench...?  They attempted to keep the speed even but
there were no controls at that point that governed the speed... hence the
later need for spring drives and constant speed etc.
 
 I agree...  this "new" system sound a bit strange.   What you would really
need is a variable/non variable human to crank both
the projector and the camera during the transfer to video.  Anybody talkin'
 to the Lumieres or Latham these days... they may have the answer?
 
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