ratectl->actsum = calc_actj(picture );
ratectl->avg_act = (double)ratectl->actsum/(double)(mb_per_pict);
ratectl->sum_avg_act += ratectl->avg_act;
ratectl->actsum = calc_actj(picture );
ratectl->avg_act = (double)ratectl->actsum/(double)(mb_per_pict);
ratectl->sum_avg_act += ratectl->avg_act;