 For the Special Extended Edition, the scene in which Pippin is  looking for Merry after the battle on Pelennor Fields was digitally  altered so that it appears to be night instead of day. According to  Peter Jackson (I) (qv) on the commentary track, this was done to  make it appear that Pippin has been looking for hours instead of  minutes, underlining the friendship between the two Hobbits. In the  original edit, because it appears that Pippin has only been looking  for a few minutes his reaction to finding Merry seems like hes  overreacting.