Hi

My program shuts down when I try to add a clip video (with MPEG-4 AAC audio codec) to new project, or when I try to open a project in which these files are.
These files (with MPEG-4 AAC audio codec) can be opened, for example, in Totem, but I see that Dolphin doesn't show the preview thumbnails (but it shows the preview thumbnails the same file video with the audio encoding MPEG 1 Audio Layer 2)

Ubuntu 14.04 LTS
KDE 4.13.3
Kdenlive 0.9.10
MLT 0.9.3



CRASH REPORT - Segmentation fault (11)

Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7fd1bf402800 (LWP 4646))]

Thread 8 (Thread 0x7fd193419700 (LWP 4701)):
#0 0x00007fd1b6e0f6d5 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007fd1b6e0ff03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd1b6e100ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd1bc11f7be in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4 0x00007fd1bc0f10af in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5 0x00007fd1bc0f13a5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6 0x00007fd1bbfedc5f in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7 0x00007fd1bc0d2823 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8 0x00007fd1bbff032f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9 0x00007fd1bb90d182 in start_thread (arg=0x7fd193419700) at pthread_create.c:312
#10 0x00007fd1b9d63fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7fd1928e4700 (LWP 4703)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd19cd98232 in ?? () from /usr/lib/mlt/libmltsdl.so
#2 0x00007fd1bb90d182 in start_thread (arg=0x7fd1928e4700) at pthread_create.c:312
#3 0x00007fd1b9d63fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7fd1920e3700 (LWP 4704)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd1bbd62e13 in ?? () from /usr/lib/libmlt.so.6
#2 0x00007fd1bb90d182 in start_thread (arg=0x7fd1920e3700) at pthread_create.c:312
#3 0x00007fd1b9d63fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7fd18a9db700 (LWP 4705)):
#0 0x00007fd1b9d56d2f in __GI_ppoll (fds=0x7fd180001470, nfds=2, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:56
#1 0x00007fd1b1dc28d7 in pa_mainloop_poll () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2 0x00007fd1b1dc2ece in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3 0x00007fd19cb33a8b in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#4 0x00007fd19cb078f0 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#5 0x00007fd19cb0fad8 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#6 0x00007fd19cb4f109 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#7 0x00007fd1bb90d182 in start_thread (arg=0x7fd18a9db700) at pthread_create.c:312
#8 0x00007fd1b9d63fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7fd18a1da700 (LWP 4706)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd19cd97b3b in ?? () from /usr/lib/mlt/libmltsdl.so
#2 0x00007fd1bb90d182 in start_thread (arg=0x7fd18a1da700) at pthread_create.c:312
#3 0x00007fd1b9d63fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7fd17a69b700 (LWP 5040)):
#0 0x00007fd1b6e5161d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007fd1b6e51979 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd1b6e0f557 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd1b6e0ff03 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fd1b6e100ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007fd1bc11f7be in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6 0x00007fd1bc0f10af in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7 0x00007fd1bc0f13a5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8 0x00007fd1bbfedc5f in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9 0x00007fd1bc0d2823 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007fd1bbff032f in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007fd1bb90d182 in start_thread (arg=0x7fd17a69b700) at pthread_create.c:312
#12 0x00007fd1b9d63fbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7fd179e9a700 (LWP 5046)):
[KCrash Handler]
#5 0x00007fd1a3d7ba26 in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
#6 0x00007fd1a3d7dfbd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
#7 0x00007fd1a4067082 in avcodec_decode_audio4 () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
#8 0x00007fd1a38560e8 in ?? () from /usr/lib/x86_64-linux-gnu/libavformat.so.54
#9 0x00007fd1a385ba1b in avformat_find_stream_info () from /usr/lib/x86_64-linux-gnu/libavformat.so.54
#10 0x00007fd1a4a67247 in ?? () from /usr/lib/mlt/libmltavformat.so
#11 0x00007fd1a4a6a8df in producer_avformat_init () from /usr/lib/mlt/libmltavformat.so
#12 0x00007fd1bbd66d4a in mlt_factory_producer () from /usr/lib/libmlt.so.6
#13 0x00007fd1a52a2fc7 in ?? () from /usr/lib/mlt/libmltcore.so
#14 0x00007fd1a52a3234 in producer_loader_init () from /usr/lib/mlt/libmltcore.so
#15 0x00007fd1bbd66d4a in mlt_factory_producer () from /usr/lib/libmlt.so.6
#16 0x00007fd1bbb39121 in Mlt::Producer::Producer(Mlt::Profile&, char const*, char const*) () from /usr/lib/libmlt++.so.3
#17 0x000000000073b409 in _start ()

Thread 1 (Thread 0x7fd1bf402800 (LWP 4646)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00007fd1bbff0816 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#2 0x00007fd1bbfe3242 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3 0x00007fd1bbfe46b5 in QThreadPool::~QThreadPool() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4 0x00007fd1bbfe46e9 in QThreadPool::~QThreadPool() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5 0x00007fd1bbfe4eb5 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6 0x00007fd1b9ca5149 in __run_exit_handlers (status=1, listp=0x7fd1ba0286c8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82
#7 0x00007fd1b9ca5195 in __GI_exit (status=<optimized out>) at exit.c:104
#8 0x00007fd1bcb4a878 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#9 0x00007fd1bee178d0 in KApplication::xioErrhandler(_XDisplay*) () from /usr/lib/libkdeui.so.5
#10 0x00007fd1bb60e5ee in _XIOError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#11 0x00007fd1bb60bfed in _XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#12 0x00007fd1bb5eeb4a in XFlush () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#13 0x00007fd1bb0994fd in glXSwapBuffers () from /usr/lib/nvidia-340/libGL.so.1
#14 0x00007fd1bdd70d02 in QGLContext::swapBuffers() const () from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4
#15 0x00007fd1bdcf58e9 in QGLWidget::paintEvent(QPaintEvent*) () from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4
#16 0x00007fd1bcb332f0 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#17 0x00007fd1bdd006b1 in QGLWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4
#18 0x00007fd1bcae3e2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#19 0x00007fd1bcaea4a0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#20 0x00007fd1bee18d1a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#21 0x00007fd1bc0f24dd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#22 0x00007fd1bcb2da11 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#23 0x00007fd1bcceeafb in QWidgetPrivate::repaint_sys(QRegion const&) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#24 0x00007fd1bcb22e47 in QWidgetPrivate::syncBackingStore() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#25 0x00007fd1bcb32e6a in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#26 0x00007fd1bdd006b1 in QGLWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtOpenGL.so.4
#27 0x00007fd1bcae3e2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#28 0x00007fd1bcaea4a0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#29 0x00007fd1bee18d1a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#30 0x00007fd1bc0f24dd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#31 0x00007fd1bc0f5b3d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#32 0x00007fd1bc11ff83 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#33 0x00007fd1b6e0fe04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fd1b6e10048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fd1b6e100ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007fd1bc11f7a1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#37 0x00007fd1bcb85bb6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#38 0x00007fd1bc0f10af in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#39 0x00007fd1bc0f13a5 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#40 0x00007fd1bc0f6b79 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#41 0x0000000000456c49 in ?? ()
#42 0x00007fd1b9c8aec5 in __libc_start_main (main=0x455e50, argc=5, argv=0x7fff421527e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff421527d8) at libc-start.c:287
#43 0x0000000000457158 in _start ()


Thanks
KB

Do these files play with the melt player and the ffmpeg player?

https://userbase.kde.org/Kdenlive/Manual/BugReporting

ffplay file.mp4 - play ok
melt file.mp4 - doesn't play (core dumped)

kbywalec wrote:ffplay file.mp4 - play ok
melt file.mp4 - doesn't play (core dumped)

The crash is within MLT. Try hitting up Dan on the MLT site to see what he has to say.

I don't think it's needed to disturb Dan: it's getting rather clear that the combination of MLT+LibAV versions in ubuntu 14.04 is causing problems... Sad for a LTS version, and even worse Ubuntu shouldn't patch anything as multimedia is part of Universe repository.
Only thing to do is to use ppa:sunab/kdenlive-release