diff -Nru vdr-plugin-streamdev-0.6.1-580~84c6f6b/client/filter.c vdr-plugin-streamdev-0.6.1-580~d66c635/client/filter.c
--- vdr-plugin-streamdev-0.6.1-580~84c6f6b/client/filter.c	2015-03-13 16:04:10.000000000 +0000
+++ vdr-plugin-streamdev-0.6.1-580~d66c635/client/filter.c	2015-11-09 23:01:26.000000000 +0000
@@ -219,9 +219,8 @@
 	cStreamdevFilter *f = new cStreamdevFilter(Pid, Tid, Mask);
 	int fh = f->ReadPipe();
 
-	Lock();
+	LOCK_THREAD;
 	Add(f);
-	Unlock();
 
 	return fh;
 }
diff -Nru vdr-plugin-streamdev-0.6.1-580~84c6f6b/debian/changelog vdr-plugin-streamdev-0.6.1-580~d66c635/debian/changelog
--- vdr-plugin-streamdev-0.6.1-580~84c6f6b/debian/changelog	2015-03-13 16:04:15.000000000 +0000
+++ vdr-plugin-streamdev-0.6.1-580~d66c635/debian/changelog	2015-11-09 23:01:28.000000000 +0000
@@ -1,7 +1,11 @@
-vdr-plugin-streamdev (0.6.1-580~84c6f6b-trusty) trusty; urgency=medium
+vdr-plugin-streamdev (0.6.1-580~d66c635-trusty) trusty; urgency=medium
 
-  * [84c6f6b6f363549e88efd01d12df35ae6e336578]
-    doubled size of client's filter buffer (fixes #2045)
+  * [d66c635a80b312e2e7277a8fe10f500b05317acd]
+    client compatibility with VDR 2.3.1 (refs #2243)
+    
+    
+  * [fc52e920ad7115b7b4ec80dc7e2b8784aa8bf281]
+    use cReceiver::SetPriority(...) in VDR 2.1.4+
     
 
- -- Andrey Pavlenko <andrey.a.pavlenko@gmail.com>  Fri, 13 Mar 2015 19:04:15 +0300
+ -- Andrey Pavlenko <andrey.a.pavlenko@gmail.com>  Tue, 10 Nov 2015 02:01:28 +0300
diff -Nru vdr-plugin-streamdev-0.6.1-580~84c6f6b/HISTORY vdr-plugin-streamdev-0.6.1-580~d66c635/HISTORY
--- vdr-plugin-streamdev-0.6.1-580~84c6f6b/HISTORY	2015-03-13 16:04:10.000000000 +0000
+++ vdr-plugin-streamdev-0.6.1-580~d66c635/HISTORY	2015-11-09 23:01:26.000000000 +0000
@@ -1,6 +1,8 @@
 VDR Plugin 'streamdev' Revision History
 ---------------------------------------
  
+- client compatibility with VDR 2.3.1
+- use cReceiver::SetPriority(...) in VDR 2.1.4+
 - doubled size of client's filter buffer (suggested by Toerless Eckert)
 - make sure TimedWrite(...) doesn't return failure after a slow but successful
   write operation (thanks to Toerless Eckert)
diff -Nru vdr-plugin-streamdev-0.6.1-580~84c6f6b/server/livestreamer.c vdr-plugin-streamdev-0.6.1-580~d66c635/server/livestreamer.c
--- vdr-plugin-streamdev-0.6.1-580~84c6f6b/server/livestreamer.c	2015-03-13 16:04:10.000000000 +0000
+++ vdr-plugin-streamdev-0.6.1-580~d66c635/server/livestreamer.c	2015-11-09 23:01:26.000000000 +0000
@@ -443,7 +443,13 @@
 void cStreamdevLiveStreamer::SetPriority(int Priority)
 {
 	m_Priority = Priority;
-	StartReceiver();
+#if VDRVERSNUM >= 20104
+	cThreadLock ThreadLock(m_Device);
+	if (m_Receiver)
+		m_Receiver->SetPriority(Priority);
+	else
+#endif
+		StartReceiver();
 }
 
 void cStreamdevLiveStreamer::GetSignal(int *DevNum, int *Strength, int *Quality) const