Thanks,w00kiee, for your help. Another member of this forum, trbarry, suggested, that I'm using such a version of D2A, which incorectly sets frame rate, when FORCED FILM=ON. And indeed, when looked at my D2A ver., it was 1.76 modified to 1.85 ver. by Gloval, and which includes on the fly mp3 compresion. Then I ran original 1.76 D2A ver. and that stupid 24fps problem was gone. Now I see perfect 23.976 frame rate when FORCED FILM=ON. Thanks, buddy