diff --git a/spa/include/spa/param/props.h b/spa/include/spa/param/props.h
index de1521356..e7d8b2693 100644
--- a/spa/include/spa/param/props.h
+++ b/spa/include/spa/param/props.h
@@ -42,6 +42,7 @@ enum spa_prop_info {
 					  *  is of the type of the property, the second
 					  *  one is a string with a user readable label
 					  *  for the value. */
+	SPA_PROP_INFO_container,	/**< type of container if any */
 };
 
 /** predefined properties for SPA_TYPE_OBJECT_Props */
diff --git a/spa/include/spa/param/type-info.h b/spa/include/spa/param/type-info.h
index e96b26ef2..948998696 100644
--- a/spa/include/spa/param/type-info.h
+++ b/spa/include/spa/param/type-info.h
@@ -117,6 +117,7 @@ static const struct spa_type_info spa_type_prop_info[] = {
 	{ SPA_PROP_INFO_name, SPA_TYPE_String, SPA_TYPE_INFO_PROP_INFO_BASE "name", NULL },
 	{ SPA_PROP_INFO_type, SPA_TYPE_Pod, SPA_TYPE_INFO_PROP_INFO_BASE "type", NULL },
 	{ SPA_PROP_INFO_labels, SPA_TYPE_Struct, SPA_TYPE_INFO_PROP_INFO_BASE "labels", NULL },
+	{ SPA_PROP_INFO_container, SPA_TYPE_Id, SPA_TYPE_INFO_PROP_INFO_BASE "container", NULL },
 	{ 0, 0, NULL, NULL },
 };
 
diff --git a/spa/plugins/audioconvert/channelmix.c b/spa/plugins/audioconvert/channelmix.c
index 5949ea32f..29c960939 100644
--- a/spa/plugins/audioconvert/channelmix.c
+++ b/spa/plugins/audioconvert/channelmix.c
@@ -345,14 +345,16 @@ static int impl_node_enum_params(void *object, int seq,
 				SPA_TYPE_OBJECT_PropInfo, id,
 				SPA_PROP_INFO_id,   SPA_POD_Id(SPA_PROP_channelVolumes),
 				SPA_PROP_INFO_name, SPA_POD_String("Channel Volumes"),
-				SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Float(p->volume, 0.0, 10.0));
+				SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Float(p->volume, 0.0, 10.0),
+				SPA_PROP_INFO_container, SPA_POD_Id(SPA_TYPE_Array));
 			break;
 		case 3:
 			param = spa_pod_builder_add_object(&b,
 				SPA_TYPE_OBJECT_PropInfo, id,
 				SPA_PROP_INFO_id,   SPA_POD_Id(SPA_PROP_channelMap),
 				SPA_PROP_INFO_name, SPA_POD_String("Channel Map"),
-				SPA_PROP_INFO_type, SPA_POD_Id(SPA_AUDIO_CHANNEL_UNKNOWN));
+				SPA_PROP_INFO_type, SPA_POD_Id(SPA_AUDIO_CHANNEL_UNKNOWN),
+				SPA_PROP_INFO_container, SPA_POD_Id(SPA_TYPE_Array));
 			break;
 		default:
 			return 0;
diff --git a/src/pipewire/stream.c b/src/pipewire/stream.c
index b70d22f5c..916e69c18 100644
--- a/src/pipewire/stream.c
+++ b/src/pipewire/stream.c
@@ -909,9 +909,8 @@ static int node_event_param(void *object, int seq,
 	{
 		struct control *c;
 		const struct spa_pod *type, *pod;
-		uint32_t iid, choice, n_vals;
+		uint32_t iid, choice, n_vals, container = SPA_ID_INVALID;
 		float *vals, bool_range[3] = { 1.0, 0.0, 1.0 };
-		const struct spa_type_info *tinfo;
 
 		if (spa_pod_parse_object(param,
 					SPA_TYPE_OBJECT_PropInfo, NULL,
@@ -932,7 +931,8 @@ static int node_event_param(void *object, int seq,
 		if (spa_pod_parse_object(c->info,
 					SPA_TYPE_OBJECT_PropInfo, NULL,
 					SPA_PROP_INFO_name, SPA_POD_String(&c->control.name),
-					SPA_PROP_INFO_type, SPA_POD_PodChoice(&type)) < 0) {
+					SPA_PROP_INFO_type, SPA_POD_PodChoice(&type),
+					SPA_PROP_INFO_container, SPA_POD_OPT_Id(&container)) < 0) {
 			free(c);
 			return -EINVAL;
 		}
@@ -953,8 +953,7 @@ static int node_event_param(void *object, int seq,
 		else
 			return -ENOTSUP;
 
-		tinfo = spa_debug_type_find(spa_type_props, iid);
-		c->container = tinfo ? tinfo->parent : c->type;
+		c->container = container != SPA_ID_INVALID ? container : c->type;
 
 		switch (choice) {
 		case SPA_CHOICE_None: