diff --git a/sys/v4l2/gstv4l2bufferpool.c b/sys/v4l2/gstv4l2bufferpool.c
index 6c77cec422..7a68926657 100644
--- a/sys/v4l2/gstv4l2bufferpool.c
+++ b/sys/v4l2/gstv4l2bufferpool.c
@@ -57,17 +57,29 @@ GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
 /*
  * GstV4l2Buffer:
  */
+GType
+gst_v4l2_meta_api_get_type (void)
+{
+  static volatile GType type;
+  static const gchar *tags[] = { "memory", NULL };
+
+  if (g_once_init_enter (&type)) {
+    GType _type = gst_meta_api_type_register ("GstV4l2MetaAPI", tags);
+    g_once_init_leave (&type, _type);
+  }
+  return type;
+}
+
 const GstMetaInfo *
 gst_v4l2_meta_get_info (void)
 {
   static const GstMetaInfo *meta_info = NULL;
-  static const gchar *tags[] = { "memory" };
 
   if (meta_info == NULL) {
     meta_info =
-        gst_meta_register ("GstV4l2Meta", "GstV4l2Meta",
+        gst_meta_register (gst_v4l2_meta_api_get_type (), "GstV4l2Meta",
         sizeof (GstV4l2Meta), (GstMetaInitFunction) NULL,
-        (GstMetaFreeFunction) NULL, (GstMetaTransformFunction) NULL, tags);
+        (GstMetaFreeFunction) NULL, (GstMetaTransformFunction) NULL);
   }
   return meta_info;
 }
diff --git a/sys/v4l2/gstv4l2bufferpool.h b/sys/v4l2/gstv4l2bufferpool.h
index 12d3ccc7df..5503628174 100644
--- a/sys/v4l2/gstv4l2bufferpool.h
+++ b/sys/v4l2/gstv4l2bufferpool.h
@@ -79,8 +79,9 @@ struct _GstV4l2Meta {
   struct v4l2_buffer vbuffer;
 };
 
+GType gst_v4l2_meta_api_get_type (void);
 const GstMetaInfo * gst_v4l2_meta_get_info (void);
-#define GST_V4L2_META_GET(buf) ((GstV4l2Meta *)gst_buffer_get_meta(buf,gst_v4l2_meta_get_info()))
+#define GST_V4L2_META_GET(buf) ((GstV4l2Meta *)gst_buffer_get_meta(buf,gst_v4l2_meta_api_get_type()))
 #define GST_V4L2_META_ADD(buf) ((GstV4l2Meta *)gst_buffer_add_meta(buf,gst_v4l2_meta_get_info(),NULL))
 
 GType gst_v4l2_buffer_pool_get_type (void);
diff --git a/sys/v4l2/gstv4l2sink.c b/sys/v4l2/gstv4l2sink.c
index 5e1e2d0d28..bcb0bb4a5f 100644
--- a/sys/v4l2/gstv4l2sink.c
+++ b/sys/v4l2/gstv4l2sink.c
@@ -653,8 +653,8 @@ gst_v4l2sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
   gst_query_set_allocation_params (query, size, 2, 0, 0, 0, pool);
 
   /* we also support various metadata */
-  gst_query_add_allocation_meta (query, GST_VIDEO_META_API);
-  gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API);
+  gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE);
+  gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE);
 
   if (pool)
     gst_object_unref (pool);
diff --git a/sys/v4l2/gstv4l2src.c b/sys/v4l2/gstv4l2src.c
index 4e29931ba3..5722bdea84 100644
--- a/sys/v4l2/gstv4l2src.c
+++ b/sys/v4l2/gstv4l2src.c
@@ -571,7 +571,7 @@ gst_v4l2src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
         alignment);
 
     /* if downstream supports video metadata, add this to the pool config */
-    if (gst_query_has_allocation_meta (query, GST_VIDEO_META_API))
+    if (gst_query_has_allocation_meta (query, GST_VIDEO_META_API_TYPE))
       gst_buffer_pool_config_add_option (config,
           GST_BUFFER_POOL_OPTION_VIDEO_META);
 
diff --git a/sys/ximage/ximageutil.c b/sys/ximage/ximageutil.c
index 84cc01a5ae..907aa3aefd 100644
--- a/sys/ximage/ximageutil.c
+++ b/sys/ximage/ximageutil.c
@@ -23,17 +23,29 @@
 
 #include "ximageutil.h"
 
+GType
+gst_meta_ximage_api_get_type (void)
+{
+  static volatile GType type;
+  static const gchar *tags[] = { "memory", NULL };
+
+  if (g_once_init_enter (&type)) {
+    GType _type = gst_meta_api_type_register ("GstMetaXImageSrcAPI", tags);
+    g_once_init_leave (&type, _type);
+  }
+  return type;
+}
+
 const GstMetaInfo *
 gst_meta_ximage_get_info (void)
 {
   static const GstMetaInfo *meta_ximage_info = NULL;
-  static const gchar *tags[] = { "memory", NULL };
 
   if (meta_ximage_info == NULL) {
     meta_ximage_info =
-        gst_meta_register ("GstMetaXImageSrc", "GstMetaXImageSrc",
+        gst_meta_register (gst_meta_ximage_api_get_type (), "GstMetaXImageSrc",
         sizeof (GstMetaXImage), (GstMetaInitFunction) NULL,
-        (GstMetaFreeFunction) NULL, (GstMetaTransformFunction) NULL, tags);
+        (GstMetaFreeFunction) NULL, (GstMetaTransformFunction) NULL);
   }
   return meta_ximage_info;
 }
diff --git a/sys/ximage/ximageutil.h b/sys/ximage/ximageutil.h
index aa674de8fa..aa03e7a857 100644
--- a/sys/ximage/ximageutil.h
+++ b/sys/ximage/ximageutil.h
@@ -160,8 +160,9 @@ struct _GstMetaXImage {
   BufferReturnFunc return_func;
 };
 
+GType gst_meta_ximage_api_get_type (void);
 const GstMetaInfo * gst_meta_ximage_get_info (void);
-#define GST_META_XIMAGE_GET(buf) ((GstMetaXImage *)gst_buffer_get_meta(buf,gst_meta_ximage_get_info()))
+#define GST_META_XIMAGE_GET(buf) ((GstMetaXImage *)gst_buffer_get_meta(buf,gst_meta_ximage_api_get_type()))
 #define GST_META_XIMAGE_ADD(buf) ((GstMetaXImage *)gst_buffer_add_meta(buf,gst_meta_ximage_get_info(),NULL))
 
 GstBuffer *gst_ximageutil_ximage_new (GstXContext *xcontext,