diff -Nru phonon-4.8.2/CMakeLists.txt phonon-4.8.3/CMakeLists.txt
--- phonon-4.8.2/CMakeLists.txt	2014-11-03 10:46:07.000000000 +0000
+++ phonon-4.8.3/CMakeLists.txt	2014-12-04 09:30:26.000000000 +0000
@@ -11,6 +11,8 @@
 option(PHONON_BUILD_DESIGNER_PLUGIN "Build the Qt Designer plugin" ON)
 option(PHONON_BUILD_DOC "Build the API documentation" OFF)
 
+option(PHONON_INSTALL_QT_COMPAT_HEADERS "Install QtPhonon compatibility headers" OFF)
+
 option(PHONON_NO_CAPTURE "Disable the capture capabilities")
 option(PHONON_NO_DBUS "Deactivate DBus support (used to expose AudioOutputs and for deprecated runtime backend switching)" OFF)
 
@@ -21,7 +23,7 @@
 # If you are unsure about the this: http://plan99.net/~mike/writing-shared-libraries.html
 set(PHONON_LIB_MAJOR_VERSION "4") # Only change on binary incompatible changes
 set(PHONON_LIB_MINOR_VERSION "8") # Only change on binary compatible changes with new interfaces
-set(PHONON_LIB_PATCH_VERSION "2") # Bump whenever you feel like it :P
+set(PHONON_LIB_PATCH_VERSION "3") # Bump whenever you feel like it :P
 set(PHONON_LIB_VERSION "${PHONON_LIB_MAJOR_VERSION}.${PHONON_LIB_MINOR_VERSION}.${PHONON_LIB_PATCH_VERSION}")
 set(PHONON_LIB_SOVERSION ${PHONON_LIB_MAJOR_VERSION})
 set(PHONON_LIB_SONAME phonon)
diff -Nru phonon-4.8.2/debian/changelog phonon-4.8.3/debian/changelog
--- phonon-4.8.2/debian/changelog	2014-11-25 00:23:06.000000000 +0000
+++ phonon-4.8.3/debian/changelog	2014-12-12 15:32:30.000000000 +0000
@@ -1,3 +1,9 @@
+phonon (4:4.8.3-0ubuntu1) vivid; urgency=medium
+
+  * New upstream release.
+
+ -- Mikhail Ivchenko <ematirov@gmail.com>  Fri, 12 Dec 2014 15:24:43 +0000
+
 phonon (4:4.8.2-0ubuntu1) vivid; urgency=medium
 
   * New upstream release. 
diff -Nru phonon-4.8.2/includes/CMakeLists.txt phonon-4.8.3/includes/CMakeLists.txt
--- phonon-4.8.2/includes/CMakeLists.txt	2014-11-03 10:46:07.000000000 +0000
+++ phonon-4.8.3/includes/CMakeLists.txt	2014-12-04 09:30:26.000000000 +0000
@@ -53,45 +53,49 @@
     phonon/VolumeSlider
 DESTINATION ${INCLUDE_INSTALL_DIR}/phonon COMPONENT Devel)
 
-
-install( FILES
-  old/Phonon/AbstractAudioOutput
-  old/Phonon/AbstractMediaStream
-  old/Phonon/AbstractVideoOutput
-  old/Phonon/AddonInterface
-  old/Phonon/AudioDevice
-  old/Phonon/AudioDeviceEnumerator
-  old/Phonon/AudioOutput
-  old/Phonon/AudioOutputDevice
-  old/Phonon/AudioOutputDeviceModel
-  old/Phonon/AudioOutputInterface
-  old/Phonon/BackendCapabilities
-  old/Phonon/BackendInterface
-  old/Phonon/Effect
-  old/Phonon/EffectDescription
-  old/Phonon/EffectDescriptionModel
-  old/Phonon/EffectInterface
-  old/Phonon/EffectParameter
-  old/Phonon/EffectWidget
-  old/Phonon/Global
-  old/Phonon/MediaController
-  old/Phonon/MediaNode
-  old/Phonon/MediaObject
-  old/Phonon/MediaObjectInterface
-  old/Phonon/MediaSource
-  old/Phonon/ObjectDescription
-  old/Phonon/ObjectDescriptionModel
-  old/Phonon/Path
-  old/Phonon/PlatformPlugin
-  old/Phonon/SeekSlider
-  old/Phonon/StreamInterface
-  old/Phonon/VideoPlayer
-  old/Phonon/VideoWidget
-  old/Phonon/VideoWidgetInterface
-  old/Phonon/VolumeFaderEffect
-  old/Phonon/VolumeFaderInterface
-  old/Phonon/VolumeSlider
-DESTINATION ${INCLUDE_INSTALL_DIR}/KDE/Phonon COMPONENT Devel)
+set(COMPAT_HEADERS
+    old/Phonon/AbstractAudioOutput
+    old/Phonon/AbstractMediaStream
+    old/Phonon/AbstractVideoOutput
+    old/Phonon/AddonInterface
+    old/Phonon/AudioDevice
+    old/Phonon/AudioDeviceEnumerator
+    old/Phonon/AudioOutput
+    old/Phonon/AudioOutputDevice
+    old/Phonon/AudioOutputDeviceModel
+    old/Phonon/AudioOutputInterface
+    old/Phonon/BackendCapabilities
+    old/Phonon/BackendInterface
+    old/Phonon/Effect
+    old/Phonon/EffectDescription
+    old/Phonon/EffectDescriptionModel
+    old/Phonon/EffectInterface
+    old/Phonon/EffectParameter
+    old/Phonon/EffectWidget
+    old/Phonon/Global
+    old/Phonon/MediaController
+    old/Phonon/MediaNode
+    old/Phonon/MediaObject
+    old/Phonon/MediaObjectInterface
+    old/Phonon/MediaSource
+    old/Phonon/ObjectDescription
+    old/Phonon/ObjectDescriptionModel
+    old/Phonon/Path
+    old/Phonon/PlatformPlugin
+    old/Phonon/SeekSlider
+    old/Phonon/StreamInterface
+    old/Phonon/VideoPlayer
+    old/Phonon/VideoWidget
+    old/Phonon/VideoWidgetInterface
+    old/Phonon/VolumeFaderEffect
+    old/Phonon/VolumeFaderInterface
+    old/Phonon/VolumeSlider
+)
+install(FILES ${COMPAT_HEADERS} DESTINATION ${INCLUDE_INSTALL_DIR}/KDE/Phonon COMPONENT Devel)
+if (PHONON_INSTALL_QT_COMPAT_HEADERS)
+    install(FILES ${COMPAT_HEADERS} DESTINATION ${INCLUDE_INSTALL_DIR}/phonon/Phonon COMPONENT Devel) # <Phonon/Foo>
+    install(FILES old/phonon DESTINATION ${INCLUDE_INSTALL_DIR}/phonon COMPONENT Devel) # <phonon/phonon> meta-include
+endif()
 
 if (PHONON_BUILD_EXPERIMENTAL)
     install(FILES
@@ -104,4 +108,5 @@
         old/Phonon/Experimental/VideoFrame2
         old/Phonon/Experimental/Visualization
     DESTINATION ${INCLUDE_INSTALL_DIR}/KDE/Phonon/Experimental COMPONENT Devel)
+    # Qt4.x never included the experimental library, so no need for compat headers.
 endif (PHONON_BUILD_EXPERIMENTAL)
diff -Nru phonon-4.8.2/includes/old/phonon phonon-4.8.3/includes/old/phonon
--- phonon-4.8.2/includes/old/phonon	1970-01-01 00:00:00.000000000 +0000
+++ phonon-4.8.3/includes/old/phonon	2014-12-04 09:30:26.000000000 +0000
@@ -0,0 +1,35 @@
+// This is a compatibility include for QtPhonon. It should not be used
+// in new software!
+
+#include "abstractaudiooutput.h"
+#include "abstractmediastream.h"
+#include "abstractvideooutput.h"
+#include "addoninterface.h"
+#include "audiooutput.h"
+#include "audiooutputinterface.h"
+#include "backendcapabilities.h"
+#include "backendinterface.h"
+#include "effect.h"
+#include "effectinterface.h"
+#include "effectparameter.h"
+#include "effectwidget.h"
+#include "globaldescriptioncontainer.h"
+#include "mediacontroller.h"
+#include "medianode.h"
+#include "mediaobject.h"
+#include "mediaobjectinterface.h"
+#include "mediasource.h"
+#include "objectdescription.h"
+#include "objectdescriptionmodel.h"
+#include "path.h"
+#include "phonondefs.h"
+#include "phononnamespace.h"
+#include "platformplugin.h"
+#include "seekslider.h"
+#include "streaminterface.h"
+#include "videoplayer.h"
+#include "videowidget.h"
+#include "videowidgetinterface.h"
+#include "volumefadereffect.h"
+#include "volumefaderinterface.h"
+#include "volumeslider.h"
diff -Nru phonon-4.8.2/phonon/audiooutput.cpp phonon-4.8.3/phonon/audiooutput.cpp
--- phonon-4.8.2/phonon/audiooutput.cpp	2014-11-03 10:46:07.000000000 +0000
+++ phonon-4.8.3/phonon/audiooutput.cpp	2014-12-04 09:30:26.000000000 +0000
@@ -54,6 +54,9 @@
     if (pulse->isActive())
         return pulse->setOutputDevice(d->getStreamUuid(), dev.index());
 
+    if (!d->backendObject())
+        return false;
+
     Iface<IFACES2> iface(d);
     if (iface) {
         return iface->setOutputDevice(dev);
diff -Nru phonon-4.8.2/phonon/CMakeLists.txt phonon-4.8.3/phonon/CMakeLists.txt
--- phonon-4.8.2/phonon/CMakeLists.txt	2014-11-03 10:46:07.000000000 +0000
+++ phonon-4.8.3/phonon/CMakeLists.txt	2014-12-04 09:30:26.000000000 +0000
@@ -172,6 +172,8 @@
 # This reduces inter-package dependencies and makes it easier to remove
 # dependencies of shared libraries without breaking binary compatibility.
 
+target_include_directories(${PHONON_LIB_SONAME}
+    INTERFACE "$<INSTALL_INTERFACE:${INCLUDE_INSTALL_DIR}>")
 
 install(TARGETS ${PHONON_LIB_SONAME} EXPORT PhononLibs ${INSTALL_TARGETS_DEFAULT_ARGS} )
 
diff -Nru phonon-4.8.2/phonon/experimental/CMakeLists.txt phonon-4.8.3/phonon/experimental/CMakeLists.txt
--- phonon-4.8.2/phonon/experimental/CMakeLists.txt	2014-11-03 10:46:07.000000000 +0000
+++ phonon-4.8.3/phonon/experimental/CMakeLists.txt	2014-12-04 09:30:26.000000000 +0000
@@ -29,6 +29,8 @@
                                          LINK_INTERFACE_LIBRARIES ""
                                          )
 install(TARGETS ${PHONON_LIB_SONAME}experimental EXPORT PhononLibs ${INSTALL_TARGETS_DEFAULT_ARGS})
+target_include_directories(${PHONON_LIB_SONAME}experimental
+    INTERFACE "$<INSTALL_INTERFACE:${INCLUDE_INSTALL_DIR}>")
 
 ########### install headers ###############
 install(FILES
diff -Nru phonon-4.8.2/PhononConfig.cmake.in phonon-4.8.3/PhononConfig.cmake.in
--- phonon-4.8.2/PhononConfig.cmake.in	2014-11-03 10:46:07.000000000 +0000
+++ phonon-4.8.3/PhononConfig.cmake.in	2014-12-04 09:30:26.000000000 +0000
@@ -10,6 +10,7 @@
 set(PHONON_NO_GRAPHICSVIEW @PHONON_NO_GRAPHICSVIEW@)
 set(PHONON_PULSESUPPORT @PHONON_PULSESUPPORT@)
 set(PHONON_FOUND_EXPERIMENTAL @PHONON_BUILD_EXPERIMENTAL@)
+set(PHONON_QT_COMPAT_HEADERS @PHONON_INSTALL_QT_COMPAT_HEADERS@)
 
 # install locations
 set(PHONON_INCLUDE_DIR "${rootDir}/@INCLUDE_INSTALL_DIR@")
@@ -30,7 +31,11 @@
 # The following one is only for compatiblity
 set(PHONON_LIBS ${PHONON_LIBRARIES})
 
-set(PHONON_INCLUDES ${PHONON_INCLUDE_DIR} ${PHONON_INCLUDE_DIR}/KDE )
+set(PHONON_INCLUDES ${PHONON_INCLUDE_DIR} ${PHONON_INCLUDE_DIR}/KDE)
+
+if (PHONON_QT_COMPAT_HEADERS)
+    list(APPEND PHONON_INCLUDES ${PHONON_INCLUDE_DIR}/Phonon)
+endif()
 
 # Find Internal is included in the backends' finders rather than here.
 # http://lists.kde.org/?l=kde-multimedia&m=135934335320148&w=2