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[Bug 1378160] Re: Segfault transcoding and adding a clip

To: ubuntustudio-bugs@xxxxxxxxxxxxxxxxxxx
From: Ken Sharp <1378160@xxxxxxxxxxxxxxxxxx>
Date: Tue, 21 May 2024 13:47:40 -0000
Reply-to: Bug 1378160 <1378160@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Does the issue still occur in a supported release?

** Changed in: kdenlive (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1378160

Title:
  Segfault transcoding and adding a clip

Status in kdenlive package in Ubuntu:
  Incomplete

Bug description:
  Application: kdenlive (0.9.6)
  KDE Platform Version: 4.13.3
  Qt Version: 4.8.6
  Operating System: Linux 3.13.0-36-generic x86_64
  Distribution: Ubuntu 14.04.1 LTS

  -- Information about the crash:
  Picked File menu item "Transcode Clips". Selected an ogv file, then specified the DVD/NTSC 4:3 profile and started transcoding. The segfault occurred immediately.

  The crash can be reproduced every time.

  -- Backtrace:
  Application: Kdenlive (kdenlive), signal: Segmentation fault
  Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
  [Current thread is 1 (Thread 0x7fd3b351f7c0 (LWP 3310))]

  Thread 24 (Thread 0x7fd39cadf700 (LWP 3313)):
  #0  0x00007fd3adf80c6d in poll () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007fd3ab304fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fd3ab3050ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #3  0x00007fd39cae71ad in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
  #4  0x00007fd3ab329f15 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #5  0x00007fd3afa20182 in start_thread (arg=0x7fd39cadf700) at pthread_create.c:312
  #6  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 23 (Thread 0x7fd396796700 (LWP 3314)):
  #0  0x00007fd3adf80c6d in poll () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007fd3ab304fe4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fd3ab30530a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #3  0x00007fd3a12ece16 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
  #4  0x00007fd3ab329f15 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #5  0x00007fd3afa20182 in start_thread (arg=0x7fd396796700) at pthread_create.c:312
  #6  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 22 (Thread 0x7fd38ffff700 (LWP 3315)):
  #0  0x00007fd3afa237ee in __pthread_mutex_unlock_usercnt (decr=1, mutex=0x7fd3b52b9980) at pthread_mutex_unlock.c:57
  #1  __GI___pthread_mutex_unlock (mutex=0x7fd3b52b9980) at pthread_mutex_unlock.c:310
  #2  0x00007fd3ab3469c1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #3  0x00007fd3ab3050f6 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fd3ab305129 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #5  0x00007fd3ab329f15 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #6  0x00007fd3afa20182 in start_thread (arg=0x7fd38ffff700) at pthread_create.c:312
  #7  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 21 (Thread 0x7fd38f7fe700 (LWP 3320)):
  #0  0x00007fd3adf80c6d in poll () at ../sysdeps/unix/syscall-template.S:81
  #1  0x00007fd375eaf248 in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd38f7fe700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 20 (Thread 0x7fd36628d700 (LWP 3341)):
  #0  0x00007fd3ab32a3a0 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #1  0x00007fd3ab3050dd in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fd3b022b7be in QEventDispatcherGlib::processEvents (this=0x7fd3580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
  #3  0x00007fd3b01fd0af in QEventLoop::processEvents (this=this@entry=0x7fd36628cde0, flags=...) at kernel/qeventloop.cpp:149
  #4  0x00007fd3b01fd3a5 in QEventLoop::exec (this=this@entry=0x7fd36628cde0, flags=...) at kernel/qeventloop.cpp:204
  #5  0x00007fd3b00f9c5f in QThread::exec (this=this@entry=0x7fd3b58c4ff0) at thread/qthread.cpp:537
  #6  0x00007fd3b01de823 in QInotifyFileSystemWatcherEngine::run (this=0x7fd3b58c4ff0) at io/qfilesystemwatcher_inotify.cpp:265
  #7  0x00007fd3b00fc32f in QThreadPrivate::start (arg=0x7fd3b58c4ff0) at thread/qthread_unix.cpp:349
  #8  0x00007fd3afa20182 in start_thread (arg=0x7fd36628d700) at pthread_create.c:312
  #9  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 19 (Thread 0x7fd343fff700 (LWP 3361)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd343fff700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 18 (Thread 0x7fd36ca22700 (LWP 3362)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd36ca22700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 17 (Thread 0x7fd3437fe700 (LWP 3363)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd3437fe700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 16 (Thread 0x7fd342ffd700 (LWP 3364)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd342ffd700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 15 (Thread 0x7fd3427fc700 (LWP 3365)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd3427fc700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 14 (Thread 0x7fd35effd700 (LWP 3372)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd35effd700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 13 (Thread 0x7fd35f7fe700 (LWP 3373)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd35f7fe700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 12 (Thread 0x7fd365a8c700 (LWP 3374)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd365a8c700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 11 (Thread 0x7fd36528b700 (LWP 3375)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd36528b700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 10 (Thread 0x7fd364a8a700 (LWP 3376)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd364a8a700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 9 (Thread 0x7fd35ffff700 (LWP 3377)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd35ffff700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 8 (Thread 0x7fd3417fa700 (LWP 3378)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd3417fa700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 7 (Thread 0x7fd340ff9700 (LWP 3379)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd340ff9700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 6 (Thread 0x7fd33bfff700 (LWP 3380)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd33bfff700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 5 (Thread 0x7fd33b7fe700 (LWP 3381)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37717c1bd in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.54
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd33b7fe700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 4 (Thread 0x7fd33a7fc700 (LWP 3389)):
  #0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
  #1  0x00007fd3afe6f991 in mlt_consumer_get_frame () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
  #2  0x00007fd3afe70448 in mlt_consumer_rt_frame () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
  #3  0x00007fd37de70707 in ?? () from /usr/lib/x86_64-linux-gnu/mlt/libmltsdl.so
  #4  0x00007fd3afa20182 in start_thread (arg=0x7fd33a7fc700) at pthread_create.c:312
  #5  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 3 (Thread 0x7fd339ffb700 (LWP 3390)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd37de6fdb8 in ?? () from /usr/lib/x86_64-linux-gnu/mlt/libmltsdl.so
  #2  0x00007fd3afa20182 in start_thread (arg=0x7fd339ffb700) at pthread_create.c:312
  #3  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 2 (Thread 0x7fd3397fa700 (LWP 3391)):
  #0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  #1  0x00007fd3b1ab5ffb in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
  #2  0x00007fd3b1ab6039 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
  #3  0x00007fd3afa20182 in start_thread (arg=0x7fd3397fa700) at pthread_create.c:312
  #4  0x00007fd3adf8dfbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

  Thread 1 (Thread 0x7fd3b351f7c0 (LWP 3310)):
  [KCrash Handler]
  #5  bm_find (cs=Qt::CaseSensitive, skiptable=0x7fff67f4db28 '\002' <repeats 37 times>, "\001", '\002' <repeats 11 times>, pl=2, puc=0x7fd3b7b3fdca, index=2, l=3551549000, uc=0x0) at tools/qstringmatcher.cpp:76
  #6  QStringMatcher::indexIn (this=this@entry=0x7fff67f4db10, str=..., from=from@entry=0) at tools/qstringmatcher.cpp:274
  #7  0x00007fd3b01480d5 in QString::replace (this=this@entry=0x7fff67f4e080, before=<optimized out>, blen=2, after=0x7fd3b7f6db3a, alen=47, cs=cs@entry=Qt::CaseSensitive) at tools/qstring.cpp:1982
  #8  0x00007fd3b014814d in QString::replace (this=this@entry=0x7fff67f4e080, before=..., after=..., cs=cs@entry=Qt::CaseSensitive) at tools/qstring.cpp:1876
  #9  0x00007fd3b36ff552 in ClipTranscode::slotStartTransCode (this=0x7fd3b743a610) at /build/buildd/kdenlive-0.9.6/src/cliptranscode.cpp:164
  #10 0x00007fd3b3700d25 in ClipTranscode::qt_static_metacall (_o=0x7fd3b743a610, _id=0, _a=0xd3b05648, _c=<optimized out>) at /build/buildd/kdenlive-0.9.6/obj-x86_64-linux-gnu/src/cliptranscode.moc:63
  #11 0x00007fd3b021287a in QMetaObject::activate (sender=sender@entry=0x7fd3b7448a60, m=m@entry=0x7fd3b16c32a0 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fff67f4e260) at kernel/qobject.cpp:3539
  #12 0x00007fd3b123e0d2 in QAbstractButton::clicked (this=this@entry=0x7fd3b7448a60, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
  #13 0x00007fd3b0fa19d3 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x7fd3b80dac20) at widgets/qabstractbutton.cpp:548
  #14 0x00007fd3b0fa2b43 in QAbstractButtonPrivate::click (this=this@entry=0x7fd3b80dac20) at widgets/qabstractbutton.cpp:541
  #15 0x00007fd3b0fa2c2c in QAbstractButton::mouseReleaseEvent (this=0x7fd3b7448a60, e=0x7fff67f4e750) at widgets/qabstractbutton.cpp:1123
  #16 0x00007fd3b0c3f50a in QWidget::event (this=0x7fd3b7448a60, event=0x7fff67f4e750) at kernel/qwidget.cpp:8376
  #17 0x00007fd3b0befe2c in QApplicationPrivate::notify_helper (this=this@entry=0x7fd3b5145520, receiver=receiver@entry=0x7fd3b7448a60, e=e@entry=0x7fff67f4e750) at kernel/qapplication.cpp:4567
  #18 0x00007fd3b0bf65dd in QApplication::notify (this=<optimized out>, receiver=0x7fd3b7448a60, e=0x7fff67f4e750) at kernel/qapplication.cpp:4110
  #19 0x00007fd3b2f24d1a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
  #20 0x00007fd3b01fe4dd in QCoreApplication::notifyInternal (this=0x7fff67f4efc0, receiver=receiver@entry=0x7fd3b7448a60, event=event@entry=0x7fff67f4e750) at kernel/qcoreapplication.cpp:953
  #21 0x00007fd3b0bf5d93 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
  #22 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x7fd3b7448a60, event=event@entry=0x7fff67f4e750, alienWidget=alienWidget@entry=0x0, nativeWidget=nativeWidget@entry=0x7fd3b7448a60, buttonDown=buttonDown@entry=0x7fd3b16d5318 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
  #23 0x00007fd3b0c6a9cb in QETWidget::translateMouseEvent (this=this@entry=0x7fd3b7448a60, event=event@entry=0x7fff67f4ead0) at kernel/qapplication_x11.cpp:4634
  #24 0x00007fd3b0c6a269 in QApplication::x11ProcessEvent (this=0x7fff67f4efc0, event=event@entry=0x7fff67f4ead0) at kernel/qapplication_x11.cpp:3627
  #25 0x00007fd3b0c91b02 in x11EventSourceDispatch (s=0x7fd3b51461c0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
  #26 0x00007fd3ab304e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #27 0x00007fd3ab305048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #28 0x00007fd3ab3050ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  #29 0x00007fd3b022b7a1 in QEventDispatcherGlib::processEvents (this=0x7fd3b511cc90, flags=...) at kernel/qeventdispatcher_glib.cpp:434
  #30 0x00007fd3b0c91bb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
  #31 0x00007fd3b01fd0af in QEventLoop::processEvents (this=this@entry=0x7fff67f4eea0, flags=...) at kernel/qeventloop.cpp:149
  #32 0x00007fd3b01fd3a5 in QEventLoop::exec (this=this@entry=0x7fff67f4eea0, flags=...) at kernel/qeventloop.cpp:204
  #33 0x00007fd3b0202b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
  #34 0x00007fd3b35fd912 in main (argc=<optimized out>, argv=<optimized out>) at /build/buildd/kdenlive-0.9.6/src/main.cpp:89

  Report to http://kdenlive.org/mantis

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References

[Bug 1378160] [NEW] Segfault transcoding and adding a clip
From: John S. Gruber, 2014-10-07