diff --git a/src/modules/module-protocol-pulse/defs.h b/src/modules/module-protocol-pulse/defs.h
index 5126efa45..c4b3f433f 100644
--- a/src/modules/module-protocol-pulse/defs.h
+++ b/src/modules/module-protocol-pulse/defs.h
@@ -30,6 +30,11 @@
 #define FLAG_SEEKMASK			0x000000FFLU
 #define FLAG_SHMWRITABLE		0x00800000LU
 
+#define SEEK_RELATIVE		0
+#define SEEK_ABSOLUTE		1
+#define SEEK_RELATIVE_ON_READ	2
+#define SEEK_RELATIVE_END	3
+
 #define FRAME_SIZE_MAX_ALLOW (1024*1024*16)
 
 #define PROTOCOL_FLAG_MASK	0xffff0000u
diff --git a/src/modules/module-protocol-pulse/pulse-server.c b/src/modules/module-protocol-pulse/pulse-server.c
index 7bf200645..d131c0519 100644
--- a/src/modules/module-protocol-pulse/pulse-server.c
+++ b/src/modules/module-protocol-pulse/pulse-server.c
@@ -4754,17 +4754,12 @@ static int handle_memblock(struct client *client, struct message *msg)
 	offset = (int64_t) (
              (((uint64_t) ntohl(client->desc.offset_hi)) << 32) |
              (((uint64_t) ntohl(client->desc.offset_lo))));
-	flags = ntohl(client->desc.flags) & FLAG_SEEKMASK;
+	flags = ntohl(client->desc.flags);
 
 	pw_log_debug(NAME" %p: Received memblock channel:%d offset:%"PRIi64
 			" flags:%08x size:%u", impl, channel, offset,
 			flags, msg->length);
 
-	if (flags != 0)
-		pw_log_warn(NAME" %p: unhandled seek flags:%02x", impl, flags);
-	if (offset != 0)
-		pw_log_warn(NAME" %p: unhandled offset:%08"PRIx64, impl, offset);
-
 	stream = pw_map_lookup(&client->streams, channel);
 	if (stream == NULL || stream->type == STREAM_TYPE_RECORD) {
 		res = -EINVAL;
@@ -4772,8 +4767,24 @@ static int handle_memblock(struct client *client, struct message *msg)
 	}
 
 	filled = spa_ringbuffer_get_write_index(&stream->ring, &index);
-	pw_log_debug("new block %p %p/%u filled:%d index:%d", msg,
-			msg->data, msg->length, filled, index);
+	pw_log_debug("new block %p %p/%u filled:%d index:%d flags:%02x offset:%08"PRIx64,
+			msg, msg->data, msg->length, filled, index, flags, offset);
+
+	switch (flags & FLAG_SEEKMASK) {
+	case SEEK_RELATIVE:
+		index += offset;
+		filled -= offset;
+		break;
+	case SEEK_ABSOLUTE:
+		filled -= (int32_t)(offset - (uint64_t)index);
+		index = offset;
+		break;
+	case SEEK_RELATIVE_ON_READ:
+	case SEEK_RELATIVE_END:
+		index = index - filled + offset;
+		filled = 0;
+		break;
+	}
 
 	if (filled < 0) {
 		/* underrun, reported on reader side */