Euro pulldown has a cadence of 2:2:2:2:2:2:2:2:2:2:2:3. It's an alternative to 2:2 pulldown in which a p24 source is converted to i50 by repeating 2 fields (I assume the 24th and 48th) or 1 whole frame (the 24th). It's used by Discovery and National geographic and even the beeb have used it (saw it on life on Mars series 1). Still confused on the level stuff. Is there a difference in luminance between absolute black on a 0-255 scale and video black on a 16-235 scale? There should be no detail to show below level 16, if 16 is zero luminance then surely you can't have anything less than that. Still not sure why there is detail in the 236-255 range, the standard says that peak white is 235, what is the extra stuff, where does it come from?