its very confusing as some dth run on mpeg 2 some on mpeg 4 some have 36mhz and some have 54mhz you need to do some calculation.
for example :- d2h have 8 54mhz tp so in 36 mhz it is 8+8/2 = 12 (bcoz 36+36/2=54)
in case of mpeg 4 and mpeg 2 i have no idea experts please giude regarding mpeg 2 and mpeg 4 calculations.