It seems the fault is a null pointer dereference in the following thread, which executes mlt code, so this suggests a bug in mlt. I'll take a stab at exporting the project to xml in order to create a standalone mlt test case.
#0 mlt_deque_allocate (self=self@entry=0x0) at mlt_deque.c:92 #1 0x00007f9d8420e759 in mlt_deque_push_back (self=0x0, item=0x2041f910) at mlt_deque.c:110 #2 0x00007f9d6fd92385 in producer_get_audio (frame=0x232bd470, buffer=0x7f9d63d51cc0, format=0x7f9d63d51e80, frequency=0x7f9d63d51ca8, channels=0x7f9d63d5199c, samples=0x7f9d63d51cb8) at producer_avformat.c:2392 #3 0x00007f9d8420c5ed in mlt_frame_get_audio (self=self@entry=0x232bd470, buffer=buffer@entry=0x7f9d63d51cc0, format=format@entry=0x7f9d63d51e80, frequency=0x7f9d63d51ca8, channels=channels@entry=0x7f9d63d5199c, samples=samples@entry=0x7f9d63d51cb8) at mlt_frame.c:689 #4 0x00007f9d6ffa9a70 in filter_get_audio (frame=0x232bd470, buffer=0x7f9d63d51cc0, format=0x7f9d63d51e80, frequency=<optimized out>, channels=0x7f9d63d51cb0, samples=0x7f9d63d51cb8) at filter_audiochannels.c:33 #5 0x00007f9d8420c5ed in mlt_frame_get_audio (self=self@entry=0x232bd470, buffer=buffer@entry=0x7f9d63d51cc0, format=format@entry=0x7f9d63d51e80, frequency=frequency@entry=0x7f9d63d51ca8, channels=channels@entry=0x7f9d63d51cb0, samples=samples@entry=0x7f9d63d51cb8) at mlt_frame.c:689 #6 0x00007f9d713722e7 in resample_get_audio (frame=0x232bd470, buffer=0x7f9d63d51cc0, format=0x7f9d63d51e80, frequency=0x7f9d63d51ca8, channels=0x7f9d63d51cb0, samples=0x7f9d63d51cb8) at filter_resample.c:54 #7 0x00007f9d8420c5ed in mlt_frame_get_audio (self=self@entry=0x232bd470, buffer=buffer@entry=0x7f9d63d51cc0, format=0x7f9d63d51e80, frequency=frequency@entry=0x7f9d63d51ca8, channels=channels@entry=0x7f9d63d51cb0, samples=samples@entry=0x7f9d63d51cb8) at mlt_frame.c:689 #8 0x00007f9d74d2a408 in filter_get_audio (frame=0x232bd470, buffer=0x7f9d63d51cc0, format=<optimized out>, frequency=0x7f9d63d51ca8, channels=0x7f9d63d51cb0, samples=0x7f9d63d51cb8) at filter_volume.c:192 #9 0x00007f9d8420c5ed in mlt_frame_get_audio (self=self@entry=0x232bd470, buffer=buffer@entry=0x7f9d63d51cc0, format=format@entry=0x7f9d63d51e80, frequency=frequency@entry=0x7f9d63d51ca8, channels=channels@entry=0x7f9d63d51cb0, samples=samples@entry=0x7f9d63d51cb8) at mlt_frame.c:689 #10 0x00007f9d6ffb6dc3 in combine_audio (samples=0x7f9d63d51e8c, channels=0x7f9d63d51e84, frequency=0x7f9d63d51e88, format=0x7f9d63d51e80, buffer=0x7f9d63d51e90, that=0x232bd470, this=0x47248c20) at transition_mix.c:114 #11 transition_get_audio (frame=0x47248c20, buffer=0x7f9d63d51e90, format=0x7f9d63d51e80, frequency=0x7f9d63d51e88, channels=0x7f9d63d51e84, samples=0x7f9d63d51e8c) at transition_mix.c:197 #12 0x00007f9d8420c5ed in mlt_frame_get_audio (self=0x47248c20, buffer=buffer@entry=0x7f9d63d51e90, format=format@entry=0x7f9d63d51e80, frequency=frequency@entry=0x7f9d63d51e88, channels=channels@entry=0x7f9d63d51e84, samples=samples@entry=0x7f9d63d51e8c) at mlt_frame.c:689 #13 0x00007f9d8421ee00 in producer_get_audio (self=0x20b22590, buffer=0x7f9d63d51e90, format=0x7f9d63d51e80, frequency=0x7f9d63d51e88, channels=0x7f9d63d51e84, samples=0x7f9d63d51e8c) at mlt_tractor.c:296 #14 0x00007f9d8420c5ed in mlt_frame_get_audio (self=self@entry=0x20b22590, buffer=buffer@entry=0x7f9d63d51e90, format=format@entry=0x7f9d63d51e80, frequency=frequency@entry=0x7f9d63d51e88, channels=channels@entry=0x7f9d63d51e84, samples=samples@entry=0x7f9d63d51e8c) at mlt_frame.c:689 #15 0x00007f9d8421bc5a in consumer_read_ahead_thread (arg=0x1ed2c00) at mlt_consumer.c:804 #16 0x00007f9d857cdb50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0 #17 0x00007f9d84c77a7d in clone () from /lib/x86_64-linux-gnu/libc.so.6 #18 0x0000000000000000 in ?? () -- You received this bug notification because you are a member of OpenShot Bugs, which is subscribed to OpenShot Video Editor. https://bugs.launchpad.net/bugs/1085727 Title: segfault when rendering Status in OpenShot Video Editor: New Bug description: This is from openshot-render, but openshot also segfaults like this: Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `/usr/bin/python /usr/bin/openshot-render -v -f mp4 -C libx264 -R 15 Mb/s -c ac3'. Program terminated with signal 11, Segmentation fault. #0 mlt_deque_allocate (self=self@entry=0x0) at mlt_deque.c:92 Stack traces for all threads attached. To manage notifications about this bug go to: https://bugs.launchpad.net/openshot/+bug/1085727/+subscriptions -- Mailing list: https://launchpad.net/~openshot.bugs Post to : [email protected] Unsubscribe : https://launchpad.net/~openshot.bugs More help : https://help.launchpad.net/ListHelp
