diff --git a/src/modules/module-rtp/audio.c b/src/modules/module-rtp/audio.c
index d6305a686..326c65d84 100644
--- a/src/modules/module-rtp/audio.c
+++ b/src/modules/module-rtp/audio.c
@@ -226,6 +226,10 @@ static void rtp_audio_flush_packets(struct impl *impl)
 	iov[0].iov_len = sizeof(header);
 
 	while (avail >= tosend) {
+		if (impl->marker_on_first && impl->first)
+			header.m = 1;
+		else
+			header.m = 0;
 		header.sequence_number = htons(impl->seq);
 		header.timestamp = htonl(impl->ts_offset + timestamp);
 
@@ -234,11 +238,12 @@ static void rtp_audio_flush_packets(struct impl *impl)
 			(timestamp * stride) & BUFFER_MASK,
 			&iov[1], tosend * stride);
 
-		pw_log_trace("sending %d timestamp:%d", tosend, timestamp);
+		pw_log_trace("sending %d avail:%d ts_offset:%d timestamp:%d", tosend, avail, impl->ts_offset, timestamp);
 
 		rtp_stream_emit_send_packet(impl, iov, 3);
 
 		impl->seq++;
+		impl->first = false;
 		timestamp += tosend;
 		avail -= tosend;
 	}
diff --git a/src/modules/module-rtp/stream.c b/src/modules/module-rtp/stream.c
index 3eb8d5b05..ff69e3e2d 100644
--- a/src/modules/module-rtp/stream.c
+++ b/src/modules/module-rtp/stream.c
@@ -58,6 +58,7 @@ struct impl {
 	unsigned have_ssrc:1;
 	unsigned ignore_ssrc:1;
 	unsigned have_seq:1;
+	unsigned marker_on_first:1;
 	uint32_t ts_offset;
 	uint32_t psamples;
 	uint32_t mtu;
@@ -132,6 +133,8 @@ static int stream_start(struct impl *impl)
 	if (impl->started)
 		return 0;
 
+	impl->first = true;
+
 	rtp_stream_emit_state_changed(impl, true, NULL);
 
 	impl->started = true;
@@ -364,6 +367,7 @@ struct rtp_stream *rtp_stream_new(struct pw_core *core,
 	if (pw_properties_get(props, PW_KEY_NODE_NETWORK) == NULL)
 		pw_properties_set(props, PW_KEY_NODE_NETWORK, "true");
 
+	impl->marker_on_first = pw_properties_get_bool(props, "sess.marker-on-first", false);
 	impl->ignore_ssrc = pw_properties_get_bool(props, "sess.ignore-ssrc", false);
 	impl->direct_timestamp = pw_properties_get_bool(props, "sess.ts-direct", false);