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				@@ -116,7 +116,7 @@ public class PlayServiceImpl implements IPlayService { 
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				     @Override 
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				-    public SSRCInfo play(MediaServerItem mediaServerItem, String deviceId, String channelId, ErrorCallback<Object> callback) { 
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				+    public SSRCInfo play(MediaServerItem mediaServerItem, String deviceId, String channelId, String ssrc, ErrorCallback<Object> callback) { 
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				         if (mediaServerItem == null) { 
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				             throw new ControllerException(ErrorCode.ERROR100.getCode(), "未找到可用的zlm"); 
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				         } 
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				@@ -162,7 +162,7 @@ public class PlayServiceImpl implements IPlayService { 
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				         if (mediaServerItem.isRtpEnable()) { 
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				             streamId = String.format("%s_%s", device.getDeviceId(), channelId); 
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				         } 
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				-        SSRCInfo ssrcInfo = mediaServerService.openRTPServer(mediaServerItem, streamId, null, device.isSsrcCheck(),  false, 0, false, device.getStreamModeForParam()); 
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				+        SSRCInfo ssrcInfo = mediaServerService.openRTPServer(mediaServerItem, streamId, ssrc, device.isSsrcCheck(),  false, 0, false, device.getStreamModeForParam()); 
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				         if (ssrcInfo == null) { 
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				             callback.run(InviteErrorCode.ERROR_FOR_RESOURCE_EXHAUSTION.getCode(), InviteErrorCode.ERROR_FOR_RESOURCE_EXHAUSTION.getMsg(), null); 
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				             inviteStreamService.call(InviteSessionType.PLAY, device.getDeviceId(), channelId, null, 
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				@@ -1154,7 +1154,7 @@ public class PlayServiceImpl implements IPlayService { 
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				         } 
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				         MediaServerItem newMediaServerItem = getNewMediaServerItem(device); 
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				-        play(newMediaServerItem, deviceId, channelId, (code, msg, data)->{ 
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				+        play(newMediaServerItem, deviceId, channelId, null, (code, msg, data)->{ 
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				            if (code == InviteErrorCode.SUCCESS.getCode()) { 
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				                InviteInfo inviteInfoForPlay = inviteStreamService.getInviteInfoByDeviceAndChannel(InviteSessionType.PLAY, deviceId, channelId); 
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				                if (inviteInfoForPlay != null && inviteInfoForPlay.getStreamInfo() != null) { 
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