Calculating running time of movie

I have one .flv movie running on the stage + many other control. on some position of the stage i am displaying the running time of FLV movie. which is i am doing like …


this.mFlvMovie.currentFrame / FRAMERATE;

FRAMERATE is variable which can be change anytime that’s why i am using this method. I dun want to use FLV Built in control. since the change of framerate should effect the flv as well and using the fLVControl by embeding it in those control dun effect the flv.

now, the problem is … due to excessive things on stage. my time is not updating accurately. each second update after 1.15 sec (approx). How can i opitmize it to update my time?