This video has been recorded with a Nikon D7000 at 24 fps and rendered with 1300 fps.
The program I used is called slowmoVideo. I'm writing it as my bachelor thesis which will (or, should) be finished in exactly one month. As soon as this is the case, I will prepare a release. slowmoVideo will be OpenSource, as is the library for optical flow I'm using.
slowmoVideo will run on Linux, and after some testing maybe also on OSX and Windows.
If you are interested, please subscribe, I will post updates here when available.