diff --git a/inc/mpp_meta.h b/inc/mpp_meta.h
index d1ad0f4e..dcc49b57 100644
--- a/inc/mpp_meta.h
+++ b/inc/mpp_meta.h
@@ -75,6 +75,7 @@ typedef enum MppMetaKey_e {
 
     /* mpp_frame / mpp_packet meta data info key */
     KEY_TEMPORAL_ID             = FOURCC_META('t', 'l', 'i', 'd'),
+    KEY_LONG_REF_IDX            = FOURCC_META('l', 't', 'i', 'd'),
 } MppMetaKey;
 
 #define mpp_meta_get(meta) mpp_meta_get_with_tag(meta, MODULE_TAG, __FUNCTION__)
diff --git a/mpp/base/mpp_meta.cpp b/mpp/base/mpp_meta.cpp
index 8b29715d..978d17ea 100644
--- a/mpp/base/mpp_meta.cpp
+++ b/mpp/base/mpp_meta.cpp
@@ -38,7 +38,10 @@ static MppMetaDef meta_defs[] = {
     {   KEY_OUTPUT_INTRA,      TYPE_S32,      },
     {   KEY_INPUT_BLOCK,       TYPE_S32,      },
     {   KEY_OUTPUT_BLOCK,      TYPE_S32,      },
+
+    /* extra information for tsvc */
     {   KEY_TEMPORAL_ID,       TYPE_S32,      },
+    {   KEY_LONG_REF_IDX,      TYPE_S32,      },
 };
 
 class MppMetaService