diff --git a/gst-libs/gst/codecparsers/gsth265parser.c b/gst-libs/gst/codecparsers/gsth265parser.c
index 0cb003807a..d4ad4c21ce 100644
--- a/gst-libs/gst/codecparsers/gsth265parser.c
+++ b/gst-libs/gst/codecparsers/gsth265parser.c
@@ -2271,10 +2271,13 @@ gst_h265_parser_parse_slice_hdr (GstH265Parser * parser,
 
       READ_UINT8 (&nr, slice->short_term_ref_pic_set_sps_flag, 1);
       if (!slice->short_term_ref_pic_set_sps_flag) {
+        guint pos = nal_reader_get_pos (&nr);
         if (!gst_h265_parser_parse_short_term_ref_pic_sets
             (&slice->short_term_ref_pic_sets, &nr,
                 sps->num_short_term_ref_pic_sets, sps))
           goto error;
+
+        slice->short_term_ref_pic_set_size = nal_reader_get_pos (&nr) - pos;
       } else if (sps->num_short_term_ref_pic_sets > 1) {
         const guint n = ceil_log2 (sps->num_short_term_ref_pic_sets);
         READ_UINT8 (&nr, slice->short_term_ref_pic_set_idx, n);
diff --git a/gst-libs/gst/codecparsers/gsth265parser.h b/gst-libs/gst/codecparsers/gsth265parser.h
index 30ad695d37..619683adde 100644
--- a/gst-libs/gst/codecparsers/gsth265parser.h
+++ b/gst-libs/gst/codecparsers/gsth265parser.h
@@ -1189,6 +1189,8 @@ struct _GstH265PredWeightTable
  * @header_size: the calculated size of the slice_header() in bits.
  * @n_emulation_prevention_bytes: number of emulation prevention bytes (EPB)
  *   in this slice_header()
+ * @short_term_ref_pic_set_size: the calculated size of short_term_ref_pic_set()
+ *   in bits. (Since: 1.18)
  */
 struct _GstH265SliceHdr
 {
@@ -1260,6 +1262,9 @@ struct _GstH265SliceHdr
   guint header_size;
   /* Number of emulation prevention bytes (EPB) in this slice_header() */
   guint n_emulation_prevention_bytes;
+
+  /* Size of short_term_ref_pic_set() in bits */
+  guint short_term_ref_pic_set_size;
 };
 
 struct _GstH265PicTiming