Recently I compiled x264, mlt, mlt++, ffmpeg and kdenlive from SVN. The SVN versions were all from 09/25/2008 and compilation went successfully. I'm using QT 4.4.2.

When I start kdenlive, it opens a wizard for configuring my default project. After the second or third screen, kdenlive segfaults. I dug around a bit and wasn't able to find any complaints of a similar crash on google (I did notice other startup-crash complaints, but they were different). I'm not at my machine now, but I can provide either an strace or a backtrace for kdenlive if this isn't a known issue and that would be helpful.

I did try to compile various older revs from svn for kdenlive and I got the same result. I also tried recompiling mlt and ensuring that it was finding the appropriate versions of the libraries that I had compiled. I'm compiling mlt without the frei0r module.

Here are the last terminal messages I get:

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Object::connect: No such signal KActionCollection::actionHovered(QAction*)

Object::connect: (sender name: 'KXMLGUIClient-KActionCollection')

Object::connect: (receiver name: 'MainWindow#1')

kdenlive(16692) MainWindow::MainWindow: KXMLGUIFactory(0x854c930) QObject(0x0)

KCrash: Application 'kdenlive' crashing...

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It seems to segfault when attempting to write to MainWindow. Would this likely be related to a bad KDE4 installation?

Here's the backtrace

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[?1034hUsing host libthread_db library "/lib/libthread_db.so.1".

[Thread debugging using libthread_db enabled]

[New Thread 0xb567c8e0 (LWP 6122)]

[New Thread 0xb3633b90 (LWP 6125)]

0xb7f39410 in __kernel_vsyscall ()

[Current thread is 0 (LWP 6122)]

Thread 2 (Thread 0xb3633b90 (LWP 6125)):

#0 0xb7f39410 in __kernel_vsyscall ()

#1 0xb659b7d1 in select () from /lib/libc.so.6

#2 0xb7cb41a3 in ?? () from /usr/lib/qt4/libQtCore.so.4

#3 0xb7be930e in ?? () from /usr/lib/qt4/libQtCore.so.4

#4 0xb7b6618b in start_thread () from /lib/libpthread.so.0

#5 0xb65a209e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb567c8e0 (LWP 6122)):

#0 0xb7f39410 in __kernel_vsyscall ()

#1 0xb7b6dfab in waitpid () from /lib/libpthread.so.0

#2 0xb6dfc8cb in ?? () from /usr/kde/4.0/lib/libkdeui.so.5

#3 0x000017f0 in ?? ()

#4 0x00000000 in ?? ()

#0 0xb7f39410 in __kernel_vsyscall ()

I managed to fix this. I made two significant changes -- the MLT recompilation was certainly a fix, but I believe the first to also be a fix.

The first thing I did was remove old versions of mlt and kdenlive from /usr/local -- I was more recently compiling into /usr.

The second thing I did was recompile mlt passing it --avformat-swscale instead of --avformat-shared. However, I recompiled MLT several times before with --avformat-swscale and I'm convinced that wasn't working so I think that the old installs of mlt/kdenlive were conflicting and I noticed it getting profiles and such when examining an strace.

At any rate, it works now.

edit: updating with more information in case others run into this issue.

Running 'inigo -query producers' should return at least:

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producers:

- slowmotion

- vorbis

- avformat

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And inigo -query filters should return at least:

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filters:

- telecide

- motion_est

- vismv

- crop_detect

- autotrack_rectangle

- avcolour_space

- avcolor_space

- avdeinterlace

- avresample

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