(gdb) bt
#0  0x17f54a18 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#1  0x17f4ac17 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#2  0x17f4add7 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#3  0x17f4ad65 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#4  0x17f42cd7 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#5  0x17f41e16 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#6  0x17f41d17 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#7  0x17f42704 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#8  0x17f46015 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#9  0x17f41e93 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#10 0x17f45d6b in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#11 0x17f42704 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#12 0x17f43a10 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#13 0x17f47b86 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#14 0x17f47a74 in QUARTZ!DllGetClassObject () from C:\Windows\SysWOW64\quartz.dll
#15 0x1763a8e7 in DirectShowPlayerService::doRender (this=0x1723c9a8, locker=0x1d58fee8) at mediaplayer\directshowplayerservice.cpp:406
#16 0x1763dbdf in DirectShowPlayerService::run (this=0x1723c9a8) at mediaplayer\directshowplayerservice.cpp:1372
#17 0x17649c44 in DirectShowPlayerServiceThread::run (this=0x1378cf28) at mediaplayer\directshowplayerservice.cpp:72
#18 0x6a115761 in QThreadPrivate::start (arg=0x1378cf28) at thread\qthread_win.cpp:315
#19 0x75f61287 in msvcrt!_itow_s () from C:\Windows\syswow64\msvcrt.dll
#20 0x75f61328 in msvcrt!_endthreadex () from C:\Windows\syswow64\msvcrt.dll
#21 0x77443677 in KERNEL32!BasepMapModuleHandle () from C:\Windows\syswow64\kernel32.dll
#22 0x1724ccf0 in ?? ()
#23 0x1d58ffd4 in ?? ()
#24 0x77e19d72 in ntdll!RtlpNtMakeTemporaryKey () from C:\Windows\system32\ntdll.dll
#25 0x1724ccf0 in ?? ()
#26 0x6e0cdaef in ?? ()
#27 0x00000000 in ?? ()