diff --git a/daemon/media_socket.c b/daemon/media_socket.c
index e3d32d81a..34101da6e 100644
--- a/daemon/media_socket.c
+++ b/daemon/media_socket.c
@@ -1545,9 +1545,13 @@ output:
 
 	__re_address_translate_ep(&redi->output.dst_addr, &sink->endpoint);
 	__re_address_translate_ep(&redi->output.src_addr, &sink->selected_sfd->socket.local);
-	if (redi->output.ssrc_subst) {
+
+	if (reti->track_ssrc) {
 		for (unsigned int u = 0; u < G_N_ELEMENTS(stream->ssrc_in); u++) {
-			if (stream->ssrc_in[u])
+			if (sink->ssrc_out[u])
+				redi->output.seq_offset[u] = sink->ssrc_out[u]->parent->seq_diff;
+
+			if (redi->output.ssrc_subst && stream->ssrc_in[u])
 				redi->output.ssrc_out[u] = htonl(stream->ssrc_in[u]->ssrc_map_out);
 		}
 	}
diff --git a/kernel-module/xt_RTPENGINE.c b/kernel-module/xt_RTPENGINE.c
index 979a82b9c..fb6121c7e 100644
--- a/kernel-module/xt_RTPENGINE.c
+++ b/kernel-module/xt_RTPENGINE.c
@@ -1708,17 +1708,14 @@ static int proc_list_show(struct seq_file *f, void *v) {
 			(unsigned long long) atomic64_read(&o->stats_out.packets),
 			(unsigned long long) atomic64_read(&o->stats_out.errors));
 
-		if (o->output.ssrc_subst) {
-			seq_printf(f, " SSRC out:");
-			for (j = 0; j < ARRAY_SIZE(o->output.ssrc_out); j++) {
-				if (!o->output.ssrc_out[j])
-					break;
-				seq_printf(f, "%s %lx",
-						(j == 0) ? "" : ",",
-						(unsigned long) ntohl(o->output.ssrc_out[j]));
-			}
-			seq_printf(f, "\n");
+		seq_printf(f, " SSRC out:");
+		for (j = 0; j < ARRAY_SIZE(o->output.ssrc_out); j++) {
+			seq_printf(f, "%s %lx [seq +%u]",
+					(j == 0) ? "" : ",",
+					(unsigned long) ntohl(o->output.ssrc_out[j]),
+					(unsigned int) o->output.seq_offset[j]);
 		}
+		seq_printf(f, "\n");
 
 		for (j = 0; j < g->target.num_payload_types; j++) {
 			if (o->output.pt_output[j].replace_pattern_len)
@@ -4857,9 +4854,13 @@ no_intercept:
 		}
 
 		if (rtp2.ok) {
-			// SSRC substitution
-			if (o->output.ssrc_subst && ssrc_idx != -1 && o->output.ssrc_out[ssrc_idx])
-				rtp2.header->ssrc = o->output.ssrc_out[ssrc_idx];
+			// SSRC substitution and seq manipulation
+			if (ssrc_idx != -1) {
+				rtp2.header->seq_num = htons(ntohs(rtp2.header->seq_num)
+						+ o->output.seq_offset[ssrc_idx]);
+				if (o->output.ssrc_subst && o->output.ssrc_out[ssrc_idx])
+					rtp2.header->ssrc = o->output.ssrc_out[ssrc_idx];
+			}
 
 			pkt_idx = packet_index(&o->encrypt, &o->output.encrypt, rtp2.header, ssrc_idx);
 			pllen = rtp2.payload_len;
diff --git a/kernel-module/xt_RTPENGINE.h b/kernel-module/xt_RTPENGINE.h
index a892a268b..c6c96c34c 100644
--- a/kernel-module/xt_RTPENGINE.h
+++ b/kernel-module/xt_RTPENGINE.h
@@ -134,6 +134,7 @@ struct rtpengine_output_info {
 
 	struct rtpengine_srtp		encrypt;
 	uint32_t			ssrc_out[RTPE_NUM_SSRC_TRACKING]; // Rewrite SSRC
+	uint32_t			seq_offset[RTPE_NUM_SSRC_TRACKING]; // Rewrite output seq
 	struct rtpengine_pt_output	pt_output[RTPE_NUM_PAYLOAD_TYPES]; // same indexes as pt_input
 
 	unsigned char			tos;