SVP allows you to watch any video on your PC file with frame interpolation (like you can watch it on high-end TVs and projectors). It increases frame rate by generating intermediate animation frames between existing ones to produce very smooth, fluid and clear motion. The technology is well-known for a while ("TrimensionDNM", "Motion Plus", "Motionflow" and others), but now it's available for free to PC users with simple GUI and just a couple of mouse clicks.
http://www.svp-team.com/wiki/Main_Page
Especially interesting is also the AVISynth plugin SVPflow which could be the successor for MVTools if it comes to rendering:
Did somebody alread made some experience...
No experience, not even with AVIsynth, but if could be a open source alternative of twixtor it´s really interesting.
MVTools in combination with AVISynth is already a freeware alternative to twixtor with similar results at its base. SVPflow should be in addition much faster with same quality.
Then I have to learn AVIsynth too..
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