diff --git a/HISTORY b/HISTORY
index bb4cc04..d24bec9 100644
--- a/HISTORY
+++ b/HISTORY
@@ -174,3 +174,7 @@ VDR Plugin 'satip' Revision History
 - Added multicast and RTP-over-TCP support.
 - Added support for activating/deactivating server on-the-fly.
 - Extended command-line parameters for setting server quirks.
+
+2017-xx-xx: Version 2.3.1
+
+- Updated for vdr-2.3.4 (Thanks to Klaus Schmidinger).
diff --git a/device.c b/device.c
index 941c2f2..a844473 100644
--- a/device.c
+++ b/device.c
@@ -17,8 +17,9 @@ static cSatipDevice * SatipDevicesS[SATIP_MAX_DEVICES] = { NULL };
 
 cSatipDevice::cSatipDevice(unsigned int indexP)
 : deviceIndexM(indexP),
-  isPacketDeliveredM(false),
+  bytesDeliveredM(0),
   isOpenDvrM(false),
+  checkTsBufferM(false),
   deviceNameM(*cString::sprintf("%s %d", *DeviceType(), deviceIndexM)),
   channelM(),
   createdM(0),
@@ -395,7 +396,7 @@ void cSatipDevice::CloseFilter(int handleP)
 bool cSatipDevice::OpenDvr(void)
 {
   debug9("%s [device %u]", __PRETTY_FUNCTION__, deviceIndexM);
-  isPacketDeliveredM = false;
+  bytesDeliveredM = 0;
   tsBufferM->Clear();
   if (pTunerM)
      pTunerM->Open();
@@ -481,13 +482,17 @@ bool cSatipDevice::IsIdle(void)
   return !Receiving();
 }
 
-uchar *cSatipDevice::GetData(int *availableP)
+uchar *cSatipDevice::GetData(int *availableP, bool checkTsBuffer)
 {
   debug16("%s [device %u]", __PRETTY_FUNCTION__, deviceIndexM);
   if (isOpenDvrM && tsBufferM) {
      int count = 0;
-     if (isPacketDeliveredM)
-        SkipData(TS_SIZE);
+     if (bytesDeliveredM) {
+        tsBufferM->Del(bytesDeliveredM);
+        bytesDeliveredM = 0;
+        }
+     if (checkTsBuffer && tsBufferM->Available() < TS_SIZE)
+        return NULL;
      uchar *p = tsBufferM->Get(count);
      if (p && count >= TS_SIZE) {
         if (*p != TS_SYNC_BYTE) {
@@ -501,7 +506,7 @@ uchar *cSatipDevice::GetData(int *availableP)
            info("Skipped %d bytes to sync on TS packet", count);
            return NULL;
            }
-        isPacketDeliveredM = true;
+        bytesDeliveredM = TS_SIZE;
         if (availableP)
            *availableP = count;
         // Update pid statistics
@@ -515,8 +520,7 @@ uchar *cSatipDevice::GetData(int *availableP)
 void cSatipDevice::SkipData(int countP)
 {
   debug16("%s [device %u]", __PRETTY_FUNCTION__, deviceIndexM);
-  tsBufferM->Del(countP);
-  isPacketDeliveredM = false;
+  bytesDeliveredM = countP;
   // Update buffer statistics
   AddBufferStatistic(countP, tsBufferM->Available());
 }
@@ -530,11 +534,12 @@ bool cSatipDevice::GetTSPacket(uchar *&dataP)
      if (cCamSlot *cs = CamSlot()) {
         if (cs->WantsTsData()) {
            int available;
-           dataP = GetData(&available);
-           if (dataP) {
-              dataP = cs->Decrypt(dataP, available);
-              SkipData(available);
-              }
+           dataP = GetData(&available, checkTsBufferM);
+           if (!dataP)
+              available = 0;
+           dataP = cs->Decrypt(dataP, available);
+           SkipData(available);
+           checkTsBufferM = dataP != NULL;
            return true;
            }
         }
diff --git a/device.h b/device.h
index 983e24d..3d23bd7 100644
--- a/device.h
+++ b/device.h
@@ -31,8 +31,9 @@ private:
     eReadyTimeoutMs = 2000 // in milliseconds
   };
   unsigned int deviceIndexM;
-  bool isPacketDeliveredM;
+  int bytesDeliveredM;
   bool isOpenDvrM;
+  bool checkTsBufferM;
   cString deviceNameM;
   cChannel channelM;
   cRingBufferLinear *tsBufferM;
@@ -82,7 +83,7 @@ protected:
 
   // for recording
 private:
-  uchar *GetData(int *availableP = NULL);
+  uchar *GetData(int *availableP = NULL, bool checkTsBuffer = false);
   void SkipData(int countP);
 
 protected:
diff --git a/po/pl_PL.po b/po/pl_PL.po
index fc5fb59..190df52 100644
--- a/po/pl_PL.po
+++ b/po/pl_PL.po
@@ -7,14 +7,14 @@ msgid ""
 msgstr ""
 "Project-Id-Version: vdr-satip 2.3.0\n"
 "Report-Msgid-Bugs-To: <see README>\n"
-"POT-Creation-Date: 2017-02-27 23:41+0100\n"
+"POT-Creation-Date: 2017-04-17 22:02+0300\n"
 "PO-Revision-Date: 2017-02-28 14:22+0100\n"
+"Last-Translator: Tomasz Maciej Nowak <tomek_n@o2.pl>\n"
+"Language-Team: Polish <vdr@linuxtv.org>\n"
 "Language: pl_PL\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"Last-Translator: Tomasz Maciej Nowak <tomek_n@o2.pl>\n"
-"Language-Team: Polish <vdr@linuxtv.org>\n"
 "X-Generator: Poedit 1.8.11\n"
 
 msgid "PAT (0x00)"
diff --git a/satip.c b/satip.c
index ec2f8ab..b94bc98 100644
--- a/satip.c
+++ b/satip.c
@@ -19,15 +19,15 @@
 #warning "CURL version >= 7.36.0 is recommended"
 #endif
 
-#if defined(APIVERSNUM) && APIVERSNUM < 20301
-#error "VDR-2.3.1 API version or greater is required!"
+#if defined(APIVERSNUM) && APIVERSNUM < 20304
+#error "VDR-2.3.4 API version or greater is required!"
 #endif
 
 #ifndef GITVERSION
 #define GITVERSION ""
 #endif
 
-       const char VERSION[]     = "2.3.0" GITVERSION;
+       const char VERSION[]     = "2.3.1" GITVERSION;
 static const char DESCRIPTION[] = trNOOP("SAT>IP Devices");
 
 class cPluginSatip : public cPlugin {