outlink->frame_rate = av_make_q(inlink->sample_rate, s->win_size * (1.-s->overlap));
outlink->sample_aspect_ratio = (AVRational){1,1};
outlink->w = s->w;
outlink->frame_rate = av_make_q(inlink->sample_rate, s->win_size * (1.-s->overlap));
outlink->sample_aspect_ratio = (AVRational){1,1};
outlink->w = s->w;