tst_QMediaPlayerBackend failed on windows 10

	C:\utils\jom\jom.exe -f Makefile.Release check
	call C:\Users\qt\work\qt\qtmultimedia\tests\auto\integration\qmediaplayerbackend\target_wrapper.bat  release\tst_qmediaplayerbackend.exe -o C:\Users\qt\work\testresults\tests\auto\integration\qmediaplayerbackend184308079,xml -o -,txt
********* Start testing of tst_QMediaPlayerBackend *********
Config: Using QtTest library 5.9.4, Qt 5.9.4 (i386-little_endian-ilp32 shared (dynamic) release build; by MSVC 2017)
PASS   : tst_QMediaPlayerBackend::initTestCase()
PASS   : tst_QMediaPlayerBackend::construction()
FAIL!  : tst_QMediaPlayerBackend::loadMedia() Compared values are not the same
tst_qmediaplayerbackend.cpp(276) : failure location
FAIL!  : tst_QMediaPlayerBackend::unloadMedia() Compared values are not the same
tst_qmediaplayerbackend.cpp(296) : failure location
QWARN  : tst_QMediaPlayerBackend::loadMediaInLoadingState() DirectShowPlayerService::doSetUrlSource: Unresolved error code 0x800c0005 (The system cannot locate the resource specified.)
PASS   : tst_QMediaPlayerBackend::loadMediaInLoadingState()
FAIL!  : tst_QMediaPlayerBackend::playPauseStop() Compared values are not the same
tst_qmediaplayerbackend.cpp(384) : failure location
FAIL!  : tst_QMediaPlayerBackend::processEOS() Compared values are not the same
tst_qmediaplayerbackend.cpp(507) : failure location
FAIL!  : tst_QMediaPlayerBackend::deleteLaterAtEOS() 'player.isNull()' returned FALSE. ()
tst_qmediaplayerbackend.cpp(640) : failure location
PASS   : tst_QMediaPlayerBackend::volumeAndMuted()
PASS   : tst_QMediaPlayerBackend::volumeAcrossFiles(100 unmuted)
PASS   : tst_QMediaPlayerBackend::volumeAcrossFiles(50 unmuted)
PASS   : tst_QMediaPlayerBackend::volumeAcrossFiles(0 unmuted)
PASS   : tst_QMediaPlayerBackend::volumeAcrossFiles(100 muted)
PASS   : tst_QMediaPlayerBackend::volumeAcrossFiles(50 muted)
PASS   : tst_QMediaPlayerBackend::volumeAcrossFiles(0 muted)
FAIL!  : tst_QMediaPlayerBackend::initialVolume() Compared values are not the same
tst_qmediaplayerbackend.cpp(756) : failure location
SKIP   : tst_QMediaPlayerBackend::seekPauseSeek() No supported video file
tst_qmediaplayerbackend.cpp(773) : failure location
SKIP   : tst_QMediaPlayerBackend::seekInStoppedState() No supported video file
tst_qmediaplayerbackend.cpp(847) : failure location
SKIP   : tst_QMediaPlayerBackend::subsequentPlayback() Sound format is not supported
tst_qmediaplayerbackend.cpp(971) : failure location
SKIP   : tst_QMediaPlayerBackend::probes() No supported video file
tst_qmediaplayerbackend.cpp(1006) : failure location
SKIP   : tst_QMediaPlayerBackend::playlist() QMediaPlayer does not support loading M3U playlists as QMediaPlaylist
tst_qmediaplayerbackend.cpp(1057) : failure location
FAIL!  : tst_QMediaPlayerBackend::playlistObject() Compared values are not the same
   Actual   (currentMediaSpy.count()): 2
   Expected (1)                      : 1
tst_qmediaplayerbackend.cpp(1225) : failure location
SKIP   : tst_QMediaPlayerBackend::surfaceTest(RGB formats) No supported video file
tst_qmediaplayerbackend.cpp(1372) : failure location
SKIP   : tst_QMediaPlayerBackend::surfaceTest(YVU formats) No supported video file
tst_qmediaplayerbackend.cpp(1372) : failure location
SKIP   : tst_QMediaPlayerBackend::surfaceTest(RGB & YUV formats) No supported video file
tst_qmediaplayerbackend.cpp(1372) : failure location
SKIP   : tst_QMediaPlayerBackend::metadata() No supported media file
tst_qmediaplayerbackend.cpp(1391) : failure location
PASS   : tst_QMediaPlayerBackend::cleanupTestCase()
Totals: 11 passed, 7 failed, 9 skipped, 0 blacklisted, 82574ms
********* Finished testing of tst_QMediaPlayerBackend *********
jom: C:\Users\qt\work\qt\qtmultimedia\tests\auto\integration\qmediaplayerbackend\Makefile.Release [check] Error 7
jom: C:\Users\qt\work\qt\qtmultimedia\tests\auto\integration\qmediaplayerbackend\Makefile [release-check] Error 2

agent:2018/01/05 06:04:31 build.go:203: Process finished with error: exit status 2
agent:2018/01/05 06:04:31 build.go:155: Error reading from stdout/err: exit status 2
agent:2018/01/05 06:04:51 build.go:279: [c:\users\qt\MSVC2017.bat jom check] 900 900

C:\Users\qt\work\qt\qtmultimedia\tests\auto\integration\qmediaplayerbackend>call "C:\Program Files\Microsoft Visual Studio\2017\Professional\VC\Auxiliary\Build\vcvarsall.bat" x86  
**********************************************************************
** Visual Studio 2017 Developer Command Prompt v15.0.26403.7
** Copyright (c) 2017 Microsoft Corporation
**********************************************************************
[vcvarsall.bat] Environment initialized for: 'x86'

jom 1.1.2 - empower your cores

	C:\utils\jom\jom.exe -f Makefile.Release check
	call C:\Users\qt\work\qt\qtmultimedia\tests\auto\integration\qmediaplayerbackend\target_wrapper.bat  release\tst_qmediaplayerbackend.exe loadMedia
[     0.000 D] qt.qpa.input.tablet unknown - Tablet support:  "None"
[     0.000 D] qt.qpa.windows unknown - QWindowsContext::setProcessDpiAwareness 2
[     0.000 D] qt.qpa.windows unknown - QWindowsIntegrationPrivate::QWindowsIntegrationPrivate DpiAwareness= 2 effective process DPI awareness= 2
[     0.000 D] qt.qpa.windows unknown - QWindowsContext::registerWindowClass "Qt5ClipboardView" style=0x0 brush=0x0 icon=false atom=49517
[     0.000 D] qt.qpa.mime unknown - QWindowsClipboard::registerViewer m_clipboardViewer: 0x150142 format listener: true next: 0x0
[     0.001 D] qt.qpa.windows unknown - New Monitor:  Screen "\\.\DISPLAY1" 1280x800+0+0 avail: 1280x760+0+0 physical: 339x212 DPI: 96x96 Depth: 32 Format: 4 hMonitor: 0x10001 primary virtual desktop
[     0.001 D] qt.qpa.fonts unknown - QWindowsFontDatabase::systemDefaultFont QFont( "MS Shell Dlg 2,8.25,-1,5,50,0,0,0,0,0" )
[     0.002 D] qt.qpa.windows unknown - QWindowsTheme::refreshIconPixmapSizes (QSize(16, 16), QSize(32, 32), QSize(48, 48), QSize(256, 256))
********* Start testing of tst_QMediaPlayerBackend *********
Config: Using QtTest library 5.9.4, Qt 5.9.4 (i386-little_endian-ilp32 shared (dynamic) release build; by MSVC 2017)
PASS   : tst_QMediaPlayerBackend::initTestCase()
FAIL!  : tst_QMediaPlayerBackend::loadMedia() Compared values are not the same
tst_qmediaplayerbackend.cpp(276) : failure location
PASS   : tst_QMediaPlayerBackend::cleanupTestCase()
Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 15624ms
********* Finished testing of tst_QMediaPlayerBackend *********
jom: C:\Users\qt\work\qt\qtmultimedia\tests\auto\integration\qmediaplayerbackend\Makefile.Release [check] Error 1
jom: C:\Users\qt\work\qt\qtmultimedia\tests\auto\integration\qmediaplayerbackend\Makefile [release-check] Error 2