Frame Rates

The Frame Rate of a movie is measured by the number of frames per second that a movie plays back.

"Full motion" means that all the frames and fields of picture information for a given standard are present.

NTSC TV runs at approximately 30fps (actually 29.97fps - don't ask)

PAL TV runs at 25fps (12.5:DSL, 6.25:slow modems if you want to reduce it)

FILM runs at 24fps

The higher the frame rate, the smoother and better quality the movie appears.

The higher the frame rate, the wider the Internet pipeline must be in order for the movie to play without dropping frames or sputtering.

Source : http://stream.uen.org/medsol/digvid/html/3B_videoframerate.html