diff --git a/gst-libs/gst/codecparsers/gsth264parser.c b/gst-libs/gst/codecparsers/gsth264parser.c
index 320777b0b0..798db5d092 100644
--- a/gst-libs/gst/codecparsers/gsth264parser.c
+++ b/gst-libs/gst/codecparsers/gsth264parser.c
@@ -2143,6 +2143,7 @@ gst_h264_parser_parse_slice_hdr (GstH264NalParser * nalparser,
   gint pps_id;
   GstH264PPS *pps;
   GstH264SPS *sps;
+  guint start_pos;
 
   memset (slice, 0, sizeof (*slice));
 
@@ -2208,6 +2209,8 @@ gst_h264_parser_parse_slice_hdr (GstH264NalParser * nalparser,
   if (nalu->idr_pic_flag)
     READ_UE_MAX (&nr, slice->idr_pic_id, G_MAXUINT16);
 
+  start_pos = nal_reader_get_pos (&nr);
+
   if (sps->pic_order_cnt_type == 0) {
     READ_UINT16 (&nr, slice->pic_order_cnt_lsb,
         sps->log2_max_pic_order_cnt_lsb_minus4 + 4);
@@ -2222,6 +2225,8 @@ gst_h264_parser_parse_slice_hdr (GstH264NalParser * nalparser,
       READ_SE (&nr, slice->delta_pic_order_cnt[1]);
   }
 
+  slice->pic_order_cnt_bit_size = nal_reader_get_pos (&nr) - start_pos;
+
   if (pps->redundant_pic_cnt_present_flag)
     READ_UE_MAX (&nr, slice->redundant_pic_cnt, G_MAXINT8);
 
diff --git a/gst-libs/gst/codecparsers/gsth264parser.h b/gst-libs/gst/codecparsers/gsth264parser.h
index 9670be5c95..bbb3ba302f 100644
--- a/gst-libs/gst/codecparsers/gsth264parser.h
+++ b/gst-libs/gst/codecparsers/gsth264parser.h
@@ -938,6 +938,13 @@ struct _GstH264SliceHdr
   /* Since: 1.18 */
   guint8 num_ref_idx_active_override_flag;
   guint8 sp_for_switch_flag;
+
+  /*
+   * Size of the pic_order_cnt related syntax elements pic_order_cnt_lsb,
+   * delta_pic_order_cnt_bottom, delta_pic_order_cnt[0], and
+   * delta_pic_order_cnt[1]. (Since: 1.18)
+   */
+  guint pic_order_cnt_bit_size;
 };