diff --git a/spa/plugins/audioconvert/audioconvert.c b/spa/plugins/audioconvert/audioconvert.c
index 77c059b78..f8fec8fae 100644
--- a/spa/plugins/audioconvert/audioconvert.c
+++ b/spa/plugins/audioconvert/audioconvert.c
@@ -756,6 +756,7 @@ static int impl_node_process(struct spa_node *node)
 {
 	struct impl *this;
 	int r, i, res = SPA_STATUS_OK;
+	int ready;
 
 	spa_return_val_if_fail(node != NULL, -EINVAL);
 
@@ -763,22 +764,25 @@ static int impl_node_process(struct spa_node *node)
 
 	spa_log_trace(this->log, NAME " %p: process %d", this, this->n_links);
 
-	for (i = 0; i < this->n_nodes; i++) {
-		r = spa_node_process(this->nodes[i]);
-		spa_log_trace(this->log, NAME " %p: process %d %d", this, i, r);
+	while (1) {
+		res = SPA_STATUS_OK;
+		ready = 0;
+		for (i = 0; i < this->n_nodes; i++) {
+			r = spa_node_process(this->nodes[i]);
+			spa_log_trace(this->log, NAME " %p: process %d %d", this, i, r);
 
-		if (i == 0)
-			res |= r & SPA_STATUS_NEED_BUFFER;
-		if (i == this->n_nodes-1)
-			res |= r & SPA_STATUS_HAVE_BUFFER;
+			if (r & SPA_STATUS_HAVE_BUFFER)
+				ready++;
 
-		if (!SPA_FLAG_CHECK(r, SPA_STATUS_HAVE_BUFFER)) {
-			if (SPA_FLAG_CHECK(r, SPA_STATUS_NEED_BUFFER) && i == 0)
-				break;
-			res = SPA_STATUS_OK;
-			i = -1;
-			continue;
+			if (i == 0)
+				res |= r & SPA_STATUS_NEED_BUFFER;
+			if (i == this->n_nodes-1)
+				res |= r & SPA_STATUS_HAVE_BUFFER;
 		}
+		if (res & SPA_STATUS_HAVE_BUFFER)
+			break;
+		if (ready == 0)
+			break;
 	}
 
 	spa_log_trace(this->log, NAME " %p: process result: %d", this, res);
diff --git a/spa/plugins/audioconvert/channelmix.c b/spa/plugins/audioconvert/channelmix.c
index f0d087e25..bdd5345e9 100644
--- a/spa/plugins/audioconvert/channelmix.c
+++ b/spa/plugins/audioconvert/channelmix.c
@@ -777,7 +777,7 @@ static int impl_node_process(struct spa_node *node)
 	spa_log_trace(this->log, NAME " %p: status %d %d", this, inio->status, outio->status);
 
 	if (outio->status == SPA_STATUS_HAVE_BUFFER)
-		return outio->status;
+		goto done;
 
 	if (inio->status != SPA_STATUS_HAVE_BUFFER)
 		return SPA_STATUS_NEED_BUFFER;
@@ -824,6 +824,7 @@ static int impl_node_process(struct spa_node *node)
 
 	inio->status = SPA_STATUS_NEED_BUFFER;
 
+      done:
 	return SPA_STATUS_HAVE_BUFFER | SPA_STATUS_NEED_BUFFER;
 }
 
diff --git a/spa/plugins/audioconvert/fmtconvert.c b/spa/plugins/audioconvert/fmtconvert.c
index 73fa93b7a..6bc031ab4 100644
--- a/spa/plugins/audioconvert/fmtconvert.c
+++ b/spa/plugins/audioconvert/fmtconvert.c
@@ -78,7 +78,10 @@ struct port {
 
 	struct spa_io_buffers *io;
 	struct spa_io_control_range *ctrl;
+
 	struct spa_port_info info;
+	struct spa_dict info_props;
+	struct spa_dict_item info_props_items[2];
 
 	bool have_format;
 	struct spa_audio_info format;
@@ -367,8 +370,14 @@ static int init_port(struct impl *this, enum spa_direction direction, uint32_t p
 
         spa_list_init(&port->queue);
         port->info.flags = flags;
+
+	port->info_props_items[0] = SPA_DICT_ITEM_INIT("port.dsp", "32 bit float mono audio");
+	port->info_props = SPA_DICT_INIT(port->info_props_items, 1);
+	port->info.props = &port->info_props;
+
         this->n_ports[direction]++;
         port->have_format = false;
+
 	return 0;
 }