/* SMPTE 421M Table 7 */
static const struct
{
  gint par_n, par_d;
} aspect_ratios[] = {
  {
  0, 0}, {
  1, 1}, {
  12, 11}, {
  10, 11}, {
  16, 11}, {
  40, 33}, {
  24, 11}, {
  20, 11}, {
  32, 11}, {
  80, 33}, {
  18, 11}, {
  15, 11}, {
  64, 33}, {
  160, 99}, {
  0, 0}, {
  0, 0}
};

/* SMPTE 421M Table 8 */
static const guint framerates_n[] = {
  0,
  24 * 1000,
  25 * 1000,
  30 * 1000,
  50 * 1000,
  60 * 1000,
  48 * 1000,
  72 * 1000
};

/* SMPTE 421M Table 9 */
static const guint framerates_d[] = {
  0,
  1000,
  1001
};


    if (vc1parse->seq_hdr.advanced.display_ext) {
      /* Only update PAR if not from input caps */
      if (!vc1parse->par_from_caps
          && vc1parse->seq_hdr.advanced.aspect_ratio_flag) {
        gint par_n, par_d;

        if (vc1parse->seq_hdr.advanced.aspect_ratio == 15) {
          par_n = vc1parse->seq_hdr.advanced.aspect_horiz_size;
          par_d = vc1parse->seq_hdr.advanced.aspect_vert_size;
        } else {
          par_n = aspect_ratios[vc1parse->seq_hdr.advanced.aspect_ratio].par_n;
          par_d = aspect_ratios[vc1parse->seq_hdr.advanced.aspect_ratio].par_d;
        }

        if (par_n != 0 && par_d != 0 &&
            (vc1parse->par_d == 0
                || gst_util_fraction_compare (par_n, par_d, vc1parse->par_n,
                    vc1parse->par_d) != 0)) {
          vc1parse->update_caps = TRUE;
          vc1parse->par_n = par_n;
          vc1parse->par_d = par_d;
        }
      }

      if (!vc1parse->fps_from_caps && vc1parse->seq_hdr.advanced.framerate_flag) {
        gint fps_n = 0, fps_d = 0;

        if (!vc1parse->seq_hdr.advanced.framerateind) {
          if (vc1parse->seq_hdr.advanced.frameratenr > 0 &&
              vc1parse->seq_hdr.advanced.frameratenr < 8 &&
              vc1parse->seq_hdr.advanced.frameratedr > 0 &&
              vc1parse->seq_hdr.advanced.frameratedr < 3) {
            fps_n = framerates_n[vc1parse->seq_hdr.advanced.frameratenr];
            fps_d = framerates_d[vc1parse->seq_hdr.advanced.frameratedr];
          }
        } else {
          fps_n = vc1parse->seq_hdr.advanced.framerateexp + 1;
          fps_d = 32;
        }

        if (fps_n != 0 && fps_d != 0 &&
            (vc1parse->fps_d == 0
                || gst_util_fraction_compare (fps_n, fps_d, vc1parse->fps_n,
                    vc1parse->fps_d) != 0)) {
          vc1parse->update_caps = TRUE;
          vc1parse->fps_n = fps;
          vc1parse->fps_d = 1;
        }
      }
    }