I'm pretty sure these are plain ol' table radish, but if you click on the description and read the specs on the time between frames and the light/darkness periods, it is really amazing. I hope someday someone does one with tillage radish and other tuber type cover crops.

 This youtube vid on radish germinating time lapse.

 There are a lot of these sort of videos using many other types of seed. I would like to see some using field soil instead of planting medium. Thankfully today, digital cameras are affordable and no film is required so one can setup a camera and leave it.