diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
index 31fd7281..b3447f95 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/impl/SIPCommander.java
@@ -409,7 +409,12 @@ public class SIPCommander implements ISIPCommander {
 		try {
 			MediaServerConfig mediaInfo = redisCatchStorage.getMediaInfo();
 			String ssrc = streamSession.createPlayBackSsrc();
-			String streamId = String.format("%08x", Integer.parseInt(ssrc)).toUpperCase();
+			String streamId = null;
+			if (rtpEnable) {
+				streamId = String.format("gb_playback_%s_%s", device.getDeviceId(), channelId);
+			}else {
+				streamId = String.format("%08x", Integer.parseInt(ssrc)).toUpperCase();
+			}
 			// 添加订阅
 			JSONObject subscribeKey = new JSONObject();
 			subscribeKey.put("app", "rtp");