stdin

#0  0x00002aaaadd159e7 in sched_yield () from /lib64/libc.so.6
#1  0x00002aaab1790875 in MFX::mfxEnterCriticalSection (pCSection=pCSection@entry=0x2aaab1995f20 <(anonymous namespace)::dispGuard>) at src/mfx_critical_section_linux.cpp:80
#2  0x00002aaab178b1d2 in MFXAutomaticCriticalSection (pCSection=0x2aaab1995f20 <(anonymous namespace)::dispGuard>, this=<synthetic pointer>) at src/mfx_critical_section.h:55
#3  MFXInitEx (par=..., session=0x6bc4d0) at src/main.cpp:181
#4  0x00002aaab5361dcb in MFXInit () from /usr/lib64/../lib64/libmfxsw64.so
#5  0x00002aaab178eb62 in MFX_DISP_HANDLE::LoadSelectedDLL (this=this@entry=0x6bc4c0, pPath=pPath@entry=0x7fffffffc240 "libmfxsw64.so", implType=implType@entry=MFX_LIB_SOFTWARE, impl=impl@entry=1, 
    implInterface=0, par=...) at src/mfx_dispatcher.cpp:264
#6  0x00002aaab178b5fa in MFXInitEx (par=..., session=0x65bd60) at src/main.cpp:419
#7  0x00002aaab178c50d in MFXInit (impl=0, pVer=<optimized out>, session=<optimized out>) at src/main.cpp:176
#8  0x00002aaaabc47a97 in ff_qsv_init_internal_session (avctx=0x65b880, qs=0x65bd60, load_plugins=0x0) at libavcodec/qsv.c:180
#9  0x00002aaaabc4972b in ff_qsv_enc_init (avctx=0x65b880, q=0x65bd48) at libavcodec/qsvenc.c:228
#10 0x00002aaaabc4b15c in qsv_enc_init (avctx=0x65b880) at libavcodec/qsvenc_h264.c:47
#11 0x00002aaaabd25892 in avcodec_open2 (avctx=0x65b880, codec=0x2aaaac602688 <ff_h264_qsv_encoder>, options=0x65b7a8) at libavcodec/utils.c:1665