Sampling rate?

[Reaper]

I'm using TMPGEnc to try to create a MPEG2.Pal dvd but It says the SAMPLING RATE IS NOT PERMITTED WITH SELECTED MPEG2 LEVEL.>SAMPLING RATE =WIDTH*HEIGHT*FRAMERATE. 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8) 8)