Yup! one second!
I apparently just lost that source video and can no longer duplicate the problem
. I'll let you know the second it comes up!
In other news, InterFrame+an accumulative temporal filter (Like TemporalSoften) makes a mean synthetic motion blur:
Yet another use for this really amazing script.
(Sorry about the quality. I had to screencap it from a render snapshot because it was currently rendering)