crashes when moving position indicator or general use

Hi

I really enjoy using kdenlive, but on loading up saved projects the programme keeps crashing out which is a shame. I'm on Ubuntu lucid, 1 gig ram and AMD phenom II- the programme has no issues in performance for rendering or general speed

In looking around in the forums for solutions, I've turned off thumbnails and I updated mtl to ver . 6, but I still have these crashes which occur when a recently saved project is loaded up and the position is moved or some basic action is performed, below are the back traces

1st crash::

Application: Kdenlive (kdenlive), signal: Segmentation fault
[Current thread is 1 (Thread 0xb4fe4930 (LWP 4718))]

Thread 3 (Thread 0xad3feb70 (LWP 4745)):
[KCrash Handler]
#6 0xb19b3f40 in ?? () from /usr/lib/i686/cmov/libswscale.so.0

Thread 2 (Thread 0xadbffb70 (LWP 4746)):
#0 0xb779e422 in __kernel_vsyscall ()
#1 0xb6935342 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb77790a1 in mlt_consumer_put_frame () from /usr/lib/libmlt.so.2
#3 0x0a0c5868 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xb4fe4930 (LWP 4718)):
#0 0xb779e422 in __kernel_vsyscall ()
#1 0xb6937af9 in __lll_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb693313b in _L_lock_748 () from /lib/tls/i686/cmov/libpthread.so.0
#3 0xb6932f61 in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#4 0xb233496d in avformat_lock () from /usr/lib/mlt/libmltavformat.so
#5 0x00000030 in ?? ()
#6 0xb233f352 in ?? () from /usr/lib/mlt/libmltavformat.so
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

----------------------------------------------------------------------------------
2nd crash::::
then updated mtl to ver 6, and got another crash when moving the position indicator

Application: Kdenlive (kdenlive), signal: Segmentation fault
[Current thread is 1 (Thread 0xb4f9d930 (LWP 5398))]

Thread 3 (Thread 0xad4feb70 (LWP 5417)):
[KCrash Handler]
#6 0xb196cf40 in ?? () from /usr/lib/i686/cmov/libswscale.so.0

Thread 2 (Thread 0xadcffb70 (LWP 5418)):
#0 0xb7757422 in __kernel_vsyscall ()
#1 0xb68ee342 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb77320a1 in mlt_consumer_put_frame () from /usr/lib/libmlt.so.2
#3 0x08d0d778 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xb4f9d930 (LWP 5398)):
#0 0xb7757422 in __kernel_vsyscall ()
#1 0xb5c39b86 in poll () from /lib/tls/i686/cmov/libc.so.6
#2 0xb543dd60 in ?? () from /usr/lib/libxcb.so.1
#3 0xb543e2cb in ?? () from /usr/lib/libxcb.so.1
#4 0xb543e667 in xcb_writev () from /usr/lib/libxcb.so.1
#5 0xb5939d79 in _XSend () from /usr/lib/libX11.so.6
#6 0xb593a3d9 in _XFlush () from /usr/lib/libX11.so.6
#7 0xb5922bf8 in XSetWindowBackgroundPixmap () from /usr/lib/libX11.so.6
#8 0xb5ff4d50 in QWidgetPrivate::updateSystemBackground() () from /usr/lib/libQtGui.so.4
#9 0xb5fa15de in QWidget::setAttribute(Qt::WidgetAttribute, bool) () from /usr/lib/libQtGui.so.4
#10 0xb5fa2798 in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) () from /usr/lib/libQtGui.so.4
#11 0xb5fa2687 in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) () from /usr/lib/libQtGui.so.4
#12 0xb5fa8481 in QWidgetPrivate::prepareToRender(QRegion const&, QFlags<:renderflag>) () from /usr/lib/libQtGui.so.4
#13 0xb5fad92d in QWidget::render(QPaintDevice*, QPoint const&, QRegion const&, QFlags<:renderflag>) () from /usr/lib/libQtGui.so.4
#14 0xb298d34d in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#15 0xb298db59 in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#16 0xb29895ac in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#17 0xb298883c in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#18 0xb2989020 in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#19 0xb6a6ac9a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#20 0xb6a793d5 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#21 0xb63af1c3 in QLineEdit::textChanged(QString const&) () from /usr/lib/libQtGui.so.4
#22 0xb63b31cd in QLineEdit::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtGui.so.4
#23 0xb7591d2a in KLineEdit::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#24 0xb75a8f8a in KRestrictedLine::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#25 0xb6a6ac9a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#26 0xb6a793d5 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#27 0xb6673e43 in QLineControl::textChanged(QString const&) () from /usr/lib/libQtGui.so.4
#28 0xb63b9d1b in QLineControl::finishChange(int, bool, bool) () from /usr/lib/libQtGui.so.4
#29 0xb63b9fb2 in QLineControl::internalSetText(QString const&, int, bool) () from /usr/lib/libQtGui.so.4
#30 0xb63b06bd in QLineEdit::setText(QString const&) () from /usr/lib/libQtGui.so.4
#31 0xb758bf0e in KLineEdit::setText(QString const&) () from /usr/lib/libkdeui.so.5
#32 0x080c445d in _start ()

If anyone could advise how I can make kdenlive more stable? Any advice is appreciated!

Thanks again

Alandub

Forums:

The crash happens in FFmpeg. There is a known limitation in the scaling routine of FFmpeg that crashes when trying to rescale a video or image to something larger than 4000 or 5000 pixels.

Are you zooming an image or video in your project which might produce something larger than that?

HI j-b-m

Thanks for your comments, well Im not looking to do zoom in or anything - just do some editing of a quicktime video- the file is quite large though 1.8 gb- I'm looking to edit down to shorter time and time size.

I un-installed and then re-installed from Synaptic, everything is up to date but still crashes

Application: Kdenlive (kdenlive), signal: Segmentation fault
[Current thread is 1 (Thread 0xb500c710 (LWP 9048))]

Thread 3 (Thread 0xad5ffb70 (LWP 9376)):
[KCrash Handler]
#6 0xb19cfff0 in ?? () from /usr/lib/i686/cmov/libswscale.so.0

Thread 2 (Thread 0xae1b5b70 (LWP 9377)):
#0 0xb77c7422 in __kernel_vsyscall ()
#1 0xb6838af9 in __lll_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb683413b in _L_lock_748 () from /lib/tls/i686/cmov/libpthread.so.0
#3 0xb6833f61 in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#4 0xb235896d in avformat_lock () from /usr/lib/mlt/libmltavformat.so
#5 0xb77c23a0 in ?? () from /usr/lib/libmlt.so.2
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 1 (Thread 0xb500c710 (LWP 9048)):
#0 0xb77c7422 in __kernel_vsyscall ()
#1 0xb6838af9 in __lll_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb683413b in _L_lock_748 () from /lib/tls/i686/cmov/libpthread.so.0
#3 0xb6833f61 in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#4 0xb235896d in avformat_lock () from /usr/lib/mlt/libmltavformat.so
#5 0x00000030 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Do you know of a way to reproduce it that does not require your existing project? Can you provide instructions for how to create a project such that loading it triggers the bug?