bt
#0  0x00007ffff5868215 in ?? () from /lib64/libc.so.6
#1  0x00007ffff240a7e2 in x264_cqm_init () from /usr/lib64/libx264.so.120
#2  0x00007ffff24775b6 in x264_encoder_open_120 () from /usr/lib64/libx264.so.120
#3  0x00007ffff68d5795 in X264_init () from /usr/lib64/libavcodec.so.54
#4  0x00007ffff6bdfaa0 in avcodec_open2 () from /usr/lib64/libavcodec.so.54
#5  0x00000000004172a2 in transcode_init ()
#6  0x00000000004082f2 in main ()