diff --git a/api_level_1/cli/shmem_test_decoded.py b/api_level_1/cli/shmem_test_decoded.py
index b4e0c6e..5e30ebe 100644
--- a/api_level_1/cli/shmem_test_decoded.py
+++ b/api_level_1/cli/shmem_test_decoded.py
@@ -12,7 +12,7 @@
 @file    shmem_test_decoded.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   Stream decoded (bitmap) frames from a single rtsp camera.  Share the bitmap between python processes.
 """
 
diff --git a/api_level_1/cli/shmem_test_encoded.py b/api_level_1/cli/shmem_test_encoded.py
index d8012f4..41ef108 100644
--- a/api_level_1/cli/shmem_test_encoded.py
+++ b/api_level_1/cli/shmem_test_encoded.py
@@ -12,7 +12,7 @@
 @file    shmem_test_encoded.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   Stream encoded H264 frames from a single rtsp camera (no decoding).  Share H264 stream to another python process.
 """
 
diff --git a/api_level_1/qt/multiple_stream.py b/api_level_1/qt/multiple_stream.py
index 9e70695..fd1f819 100644
--- a/api_level_1/qt/multiple_stream.py
+++ b/api_level_1/qt/multiple_stream.py
@@ -12,7 +12,7 @@
 @file    multiple_stream.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   A demo program streaming from various rtsp cameras and other sources (defined per .sdp files)
 """
 
diff --git a/api_level_1/qt/single_stream_rtsp.py b/api_level_1/qt/single_stream_rtsp.py
index 9906484..5275db9 100644
--- a/api_level_1/qt/single_stream_rtsp.py
+++ b/api_level_1/qt/single_stream_rtsp.py
@@ -12,7 +12,7 @@
 @file    single_stream_rtsp.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   A demo program: streaming from a single rtsp camera
 """
 
diff --git a/api_level_1/qt/single_stream_rtsp_1.py b/api_level_1/qt/single_stream_rtsp_1.py
index 8059972..ba4d10f 100644
--- a/api_level_1/qt/single_stream_rtsp_1.py
+++ b/api_level_1/qt/single_stream_rtsp_1.py
@@ -12,7 +12,7 @@
 @file    single_stream_rtsp_1.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   A demo program: streaming from a single rtsp camera.  You can use an x window create by Valkka.
 """
 
diff --git a/api_level_2/cli/single_stream_rtsp.py b/api_level_2/cli/single_stream_rtsp.py
index c41b090..aa6263b 100644
--- a/api_level_2/cli/single_stream_rtsp.py
+++ b/api_level_2/cli/single_stream_rtsp.py
@@ -12,7 +12,7 @@
 @file    single_stream_rtsp.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   Send N copies of an rtsp stream to the screen, using level 2 api
 """
 
diff --git a/api_level_2/qt/basic.py b/api_level_2/qt/basic.py
index 0313834..909b1c0 100644
--- a/api_level_2/qt/basic.py
+++ b/api_level_2/qt/basic.py
@@ -25,7 +25,7 @@
 @file    basic.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 
 @brief Some basic classes encapsulating filter chains
 """
diff --git a/api_level_2/qt/basic1.py b/api_level_2/qt/basic1.py
index 133bc09..2f4e207 100644
--- a/api_level_2/qt/basic1.py
+++ b/api_level_2/qt/basic1.py
@@ -25,7 +25,7 @@
 @file    basic1.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
   
 @brief Some more custom filterchain classes for different use cases
 """
diff --git a/api_level_2/qt/basic2.py b/api_level_2/qt/basic2.py
index 295eabf..d63a124 100644
--- a/api_level_2/qt/basic2.py
+++ b/api_level_2/qt/basic2.py
@@ -25,7 +25,7 @@
 @file    basic.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
   
 @brief Some basic classes encapsulating filter chains.  User must define the endpoints of the filterchains
 """
diff --git a/api_level_2/qt/cast.py b/api_level_2/qt/cast.py
index 1ce5452..d4f98a5 100644
--- a/api_level_2/qt/cast.py
+++ b/api_level_2/qt/cast.py
@@ -12,7 +12,7 @@
 @file    demo_filterchains.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   
 """
 import sys
diff --git a/api_level_2/qt/chains.py b/api_level_2/qt/chains.py
index ceacb72..06bc646 100644
--- a/api_level_2/qt/chains.py
+++ b/api_level_2/qt/chains.py
@@ -12,7 +12,7 @@
 @file    chains.py
 @author  Sampsa Riikonen
 @date    2019
-@version 1.5.3 
+@version 1.5.4 
 @brief   
 """
 
diff --git a/api_level_2/qt/cpp_thread_demo.py b/api_level_2/qt/cpp_thread_demo.py
index 7cabd02..789610b 100644
--- a/api_level_2/qt/cpp_thread_demo.py
+++ b/api_level_2/qt/cpp_thread_demo.py
@@ -12,7 +12,7 @@
 @file    cpp_thread_demo.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   Launch a cpp thread in python.  That thread uses a callback to send a signal to PyQt's signal/slot system
 """
 
diff --git a/api_level_2/qt/demo_analyzer.py b/api_level_2/qt/demo_analyzer.py
index 3e653bf..612c09c 100644
--- a/api_level_2/qt/demo_analyzer.py
+++ b/api_level_2/qt/demo_analyzer.py
@@ -12,7 +12,7 @@
 @file    analyzer.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   A base class for analyzing image streams using OpenCV and an example movement detector.
 """
 
diff --git a/api_level_2/qt/demo_base.py b/api_level_2/qt/demo_base.py
index e6c0fa1..af480f2 100644
--- a/api_level_2/qt/demo_base.py
+++ b/api_level_2/qt/demo_base.py
@@ -12,7 +12,7 @@
 @file    demo_base.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   
 """
 
diff --git a/api_level_2/qt/manager.py b/api_level_2/qt/manager.py
index 1cc51ef..1578da4 100644
--- a/api_level_2/qt/manager.py
+++ b/api_level_2/qt/manager.py
@@ -25,7 +25,7 @@
 @file    manage.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 
 @brief   Managed filterchain classes.  Resources are managed hierarchically, decoding is turned off if its not required
 """
diff --git a/api_level_2/qt/multiprocessing_demo.py b/api_level_2/qt/multiprocessing_demo.py
index 4f4d8e0..7962de0 100644
--- a/api_level_2/qt/multiprocessing_demo.py
+++ b/api_level_2/qt/multiprocessing_demo.py
@@ -12,7 +12,7 @@
 @file    multiprocessing_demo.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Use Qt with python multiprocesses
 """
 
diff --git a/api_level_2/qt/playback.py b/api_level_2/qt/playback.py
index e436af1..3d07045 100644
--- a/api_level_2/qt/playback.py
+++ b/api_level_2/qt/playback.py
@@ -13,7 +13,7 @@
 @author  Petri Eränkö
 @author  Sampsa Riikonen
 @date    2019
-@version 1.5.3 
+@version 1.5.4 
 @brief   A controller that brings together TimeLineWidget, CalendarWidget and the ValkkaFSManager
 """
 
diff --git a/api_level_2/qt/playwidget.py b/api_level_2/qt/playwidget.py
index 1228bfa..fe52297 100644
--- a/api_level_2/qt/playwidget.py
+++ b/api_level_2/qt/playwidget.py
@@ -13,7 +13,7 @@
 @author  Petri Eränkö
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief
 """
 
diff --git a/api_level_2/qt/port.py b/api_level_2/qt/port.py
index 020dffe..a557dd3 100644
--- a/api_level_2/qt/port.py
+++ b/api_level_2/qt/port.py
@@ -25,7 +25,7 @@
 @file    manage.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
   
 @brief   Port classes for managed filterchains (see "managed.py").  "Ports" are terminals of the filterchains that require resources (say, decoding or connection to a certain x screen)
 """
diff --git a/api_level_2/qt/test_studio_1.py b/api_level_2/qt/test_studio_1.py
index 801a05a..b5c66ea 100644
--- a/api_level_2/qt/test_studio_1.py
+++ b/api_level_2/qt/test_studio_1.py
@@ -14,7 +14,7 @@
 @file    test_studio_1.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming with Qt
 
 
diff --git a/api_level_2/qt/test_studio_2.py b/api_level_2/qt/test_studio_2.py
index 9ee96fb..cee93a8 100644
--- a/api_level_2/qt/test_studio_2.py
+++ b/api_level_2/qt/test_studio_2.py
@@ -14,7 +14,7 @@
 @file    test_studio_2.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming with Qt with floating instead of grouped widgets
 
 
diff --git a/api_level_2/qt/test_studio_3.py b/api_level_2/qt/test_studio_3.py
index ffbe833..39eb0f3 100644
--- a/api_level_2/qt/test_studio_3.py
+++ b/api_level_2/qt/test_studio_3.py
@@ -12,7 +12,7 @@
 @file    test_studio_2.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Jump video from one x-screen (and gpu) to another
 
 
diff --git a/api_level_2/qt/test_studio_4.py b/api_level_2/qt/test_studio_4.py
index 79ca41c..90f42ca 100644
--- a/api_level_2/qt/test_studio_4.py
+++ b/api_level_2/qt/test_studio_4.py
@@ -12,7 +12,7 @@
 @file    test_studio_2.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming with Qt
 
 
diff --git a/api_level_2/qt/test_studio_5.py b/api_level_2/qt/test_studio_5.py
index 0537637..991acb9 100644
--- a/api_level_2/qt/test_studio_5.py
+++ b/api_level_2/qt/test_studio_5.py
@@ -12,7 +12,7 @@
 @file    test_studio_5.py
 @author  Sampsa Riikonen
 @date    2019
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming, recording and playback in Qt
 
 
diff --git a/api_level_2/qt/test_studio_6.py b/api_level_2/qt/test_studio_6.py
index ac56a90..b25bf55 100644
--- a/api_level_2/qt/test_studio_6.py
+++ b/api_level_2/qt/test_studio_6.py
@@ -12,7 +12,7 @@
 @file    test_studio_5.py
 @author  Sampsa Riikonen
 @date    2019
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming, recording and playback in Qt
 
 
diff --git a/api_level_2/qt/test_studio_detector.py b/api_level_2/qt/test_studio_detector.py
index c25c0af..1040237 100644
--- a/api_level_2/qt/test_studio_detector.py
+++ b/api_level_2/qt/test_studio_detector.py
@@ -12,7 +12,7 @@
 @file    test_studio_detector.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming with Qt.  Send copies of streams to OpenCV movement detector processes.  There is one OpenCV detector & multiprocess for each stream.
 
 In the main text field, write live video sources, one to each line, e.g.
diff --git a/api_level_2/qt/test_studio_detector_2.py b/api_level_2/qt/test_studio_detector_2.py
index 82c8a2d..7882e53 100644
--- a/api_level_2/qt/test_studio_detector_2.py
+++ b/api_level_2/qt/test_studio_detector_2.py
@@ -12,7 +12,7 @@
 @file    test_studio_detector_2.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming with Qt.  Send copies of the streams to OpenCV movement detector processes.
 
 
diff --git a/api_level_2/qt/test_studio_file.py b/api_level_2/qt/test_studio_file.py
index b19e1f4..ae10c8b 100644
--- a/api_level_2/qt/test_studio_file.py
+++ b/api_level_2/qt/test_studio_file.py
@@ -13,7 +13,7 @@
 @file    test_studio_file.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   An example GUI for reading matroska (mkv) files, playing and sending them to an analyzer
 """
 
diff --git a/api_level_2/qt/test_studio_multicast.py b/api_level_2/qt/test_studio_multicast.py
index 6362cdd..5834e64 100644
--- a/api_level_2/qt/test_studio_multicast.py
+++ b/api_level_2/qt/test_studio_multicast.py
@@ -12,7 +12,7 @@
 @file    test_studio_multcast.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming with Qt
 
 
diff --git a/api_level_2/qt/test_studio_rtsp_server.py b/api_level_2/qt/test_studio_rtsp_server.py
index 47f11bb..b893be7 100644
--- a/api_level_2/qt/test_studio_rtsp_server.py
+++ b/api_level_2/qt/test_studio_rtsp_server.py
@@ -12,7 +12,7 @@
 @file    test_studio_multcast.py
 @author  Sampsa Riikonen
 @date    2018
-@version 1.5.3 
+@version 1.5.4 
 @brief   Test live streaming with Qt
 
 
diff --git a/api_level_2/qt/tools.py b/api_level_2/qt/tools.py
index 3224c1c..9822507 100644
--- a/api_level_2/qt/tools.py
+++ b/api_level_2/qt/tools.py
@@ -25,7 +25,7 @@
 @file    tools.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 
 @brief helper functions
 """
diff --git a/api_level_2/qt/valkkafs.py b/api_level_2/qt/valkkafs.py
index 81e7d63..8913640 100644
--- a/api_level_2/qt/valkkafs.py
+++ b/api_level_2/qt/valkkafs.py
@@ -25,7 +25,7 @@
 @file    valkkafs.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 
 @brief Framefilter chains for simultaneous decoding, presenting and reading / writing frames to ValkkaFS
 """
diff --git a/api_level_2/qt/valkkafs2.py b/api_level_2/qt/valkkafs2.py
index ca2f9d3..0b8f7bc 100644
--- a/api_level_2/qt/valkkafs2.py
+++ b/api_level_2/qt/valkkafs2.py
@@ -13,7 +13,7 @@
 @author  Sampsa Riikonen
 @author  Petri Eränkö
 @date    2019
-@version 1.5.3 
+@version 1.5.4 
 @brief   
 """
 
diff --git a/api_level_2/qt/valkkafs3.py b/api_level_2/qt/valkkafs3.py
index 29f295f..89fc46a 100644
--- a/api_level_2/qt/valkkafs3.py
+++ b/api_level_2/qt/valkkafs3.py
@@ -13,7 +13,7 @@
 @author  Sampsa Riikonen
 @author  Petri Eränkö
 @date    2019
-@version 1.5.3 
+@version 1.5.4 
 @brief   
 """
 
diff --git a/api_level_2/qt/xscreen_test.py b/api_level_2/qt/xscreen_test.py
index ddd4d8d..e227f80 100644
--- a/api_level_2/qt/xscreen_test.py
+++ b/api_level_2/qt/xscreen_test.py
@@ -12,7 +12,7 @@
 @file    NAME.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   
 """
 
diff --git a/aux/template.py b/aux/template.py
index 6e43159..dbda3bb 100644
--- a/aux/template.py
+++ b/aux/template.py
@@ -12,7 +12,7 @@
 @file    NAME.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   
 """
 
diff --git a/aux/template_qt.py b/aux/template_qt.py
index 529c426..2877f15 100644
--- a/aux/template_qt.py
+++ b/aux/template_qt.py
@@ -12,7 +12,7 @@
 @file    NAME.py
 @author  Sampsa Riikonen
 @date    2017
-@version 1.5.3 
+@version 1.5.4 
 @brief   
 """
 
diff --git a/docs/_build/html/objects.inv b/docs/_build/html/objects.inv
index 1493bde..ed2d79b 100644
Binary files a/docs/_build/html/objects.inv and b/docs/_build/html/objects.inv differ
diff --git a/docs/conf.py b/docs/conf.py
index 4c5ba0d..941c645 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -77,9 +77,9 @@
 # built documents.
 #
 # The short X.Y version
-version = '1.5.3' # WARNING: modified by setver.bash
+version = '1.5.4' # WARNING: modified by setver.bash
 # The full version, including alpha/beta/rc tags.
-version = '1.5.3' # WARNING: modified by setver.bash
+version = '1.5.4' # WARNING: modified by setver.bash
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/quicktest.py b/quicktest.py
index c279258..22ff3d7 100644
--- a/quicktest.py
+++ b/quicktest.py
@@ -44,7 +44,7 @@
     # this is modified automatically by setver.bash - don't touch!
     VERSION_MAJOR=1
     VERSION_MINOR=5
-    VERSION_PATCH=3
+    VERSION_PATCH=4
 
     print("Checking Valkka python examples")
     print("   version:",str(VERSION_MAJOR)+"."+str(VERSION_MINOR)+"."+str(VERSION_PATCH))