StacktraceTop: mlt_properties_fetch (this=0x0, name=0xb62ac410 "_speed") mlt_properties_set_double (this=0x0, mlt_producer_set_speed (this=0x0, speed=0) Mlt::Producer::set_speed (this=0x909a888, speed=0) ?? ()
StacktraceTop: _fetch (this=0x0, name=0xb62ac410 "_speed") _set_double (this=0x0, set_speed (this=0x0, speed=0) :set_speed (this=0x909a888, speed=0)
mlt_properties
mlt_properties
mlt_producer_
Mlt::Producer:
?? ()