I've noticed when d/l rip taken from Blu-ray discs there is variation in fps. My understanding and by looking
http://dvdcompare.net/comparisons/film.php?fid=18098 here for example is that they run at 24fps yet the rip i have which must have beeen taken from one of these runs at 23.972fps. Is it in the encoding ? I have other rips taken from Blu-rays that run at 24fps and 25fps