st->codec->width = width;
st->codec->height = height;
av_set_pts_info(st, 60, framerate.den, framerate.num);
/* simulate tty display speed */
st->codec->width = width;
st->codec->height = height;
av_set_pts_info(st, 60, framerate.den, framerate.num);
/* simulate tty display speed */