var_values[VAR_PDURATION] = s->prev_nb_frames;
var_values[VAR_TIME] = pts * av_q2d(outlink->time_base);
var_values[VAR_FRAME] = i;
- var_values[VAR_ON] = outlink->frame_count_in + 1;
+ var_values[VAR_ON] = outlink->frame_count_in;
*zoom = av_expr_eval(s->zoom_expr, var_values, NULL);
s->var_values[VAR_IN_H] = s->var_values[VAR_IH] = s->in->height;
s->var_values[VAR_OUT_W] = s->var_values[VAR_OW] = s->w;
s->var_values[VAR_OUT_H] = s->var_values[VAR_OH] = s->h;
- s->var_values[VAR_IN] = inlink->frame_count_out + 1;
- s->var_values[VAR_ON] = outlink->frame_count_in + 1;
+ s->var_values[VAR_IN] = inlink->frame_count_out - 1;
+ s->var_values[VAR_ON] = outlink->frame_count_in;
s->var_values[VAR_PX] = s->x;
s->var_values[VAR_PY] = s->y;
s->var_values[VAR_X] = 0;