Hi! I downloaded a trial version of Retimer, and tried to use the SW to slow down a movie of a friend of mine doing a jump in motorbike (the scene is very similar to the one you show in the gallery section, with the one in bike doing the killer loop).
Now, I tried importing an avi or a sequence of TIFF, but the result is the same. If I slow down much (for example 25fps to 150fps) the result is only a movie with original frames (not middle frames) and ABSOLUTELY not smooth motion.
Is the same result I can obtain slowing down the movie with Premiere or any other movie editing SW.
The example you show is not true or I am missing something very important?
 
Before anyone answer me, I learned how to use Hints and other function in the tutorial....
 
Thanks so much