openshot.developers team mailing list archive

[Jonathan Thomas <jonathan.oomph@xxxxxxxxx>]

Thanks TJ!  I'll look into this error tonight.  I have an idea of what it
might be.

Thanks,
-Jonathan


On Mon, Sep 28, 2009 at 3:31 PM, TJ <ubuntu@xxxxxxxxxxx> wrote:

> On Mon, 2009-09-28 at 10:46 -0500, Jonathan Thomas wrote:
> > I just noticed something.  When OpenShot is installed via the PPA or
> > DEB installer, any effect that depends on the Frei0r library fails
> > with a segmentation fault.
>
> I used your test case and cannot reproduce the fault. I can drop effects
> (including "Black and White") onto a clip on the timeline, press Play,
> and see the effect being rendered in the preview window.
>
> I *thought* I'd added frei0r as a depend to the MLT package, and I had,
> but only for building. The package-build system ought to detect and
> automatically add the depend on frei0r-plugins using the
> "debian/control" expression "${shlibs:Depends}".
>
> I'll do some digging in case this is a symptom of a wider issue with the
> MLT packaging.
>
>
> I did some experimenting and was able to cause a SIGSEGV in another
> scenario. This seems to affect high-quality H.264 videos mostly because
> they impose such a background processing load (unless VDPAU is
> available):
>
> 1. Add a clip to the time-line
> 2. Drop an effect onto the clip
> 3. Play the clip
> 4. Pause the clip
> 5. Whilst the background decoder process is still active...
> 5a. Call up Clip Properties, delete the Effect, press Apply
> 5b. Close the dialog
>
> gdb shows:
>
> on_tlbPlay_clicked called with self.tlbPlay  (<< this is when I pressed
> play)
> [New Thread 0x7fc05bb48950 (LWP 18231)]
> [Thread 0x7fc05bb48950 (LWP 18231) exited]
> [New Thread 0x7fc05bb48950 (LWP 18232)]
> [New Thread 0x7fc057667950 (LWP 18233)]
> [New Thread 0x7fc05a343950 (LWP 18234)]
> [New Thread 0x7fc056344950 (LWP 18235)]
> [New Thread 0x7fc055b43950 (LWP 18236)]
> [Thread 0x7fc058ef6950 (LWP 18229) exited]
> [Thread 0x7fc057e68950 (LWP 18230) exited]
> [New Thread 0x7fc057e68950 (LWP 18237)]
> [New Thread 0x7fc058ef6950 (LWP 18238)]
> on_tlbPlay_clicked called with self.tlbPlay (<< pressing play again to
> pause preview)
> [Thread 0x7fc057e68950 (LWP 18237) exited]
> [Thread 0x7fc058ef6950 (LWP 18238) exited]
> on_mnuClipProperties_activate (<< right-click clip, choose Properties)
> [Thread 0x7fc055b43950 (LWP 18236) exited]
> [Thread 0x7fc05bb48950 (LWP 18232) exited]
> [Thread 0x7fc056344950 (LWP 18235) exited]
> [Thread 0x7fc05a343950 (LWP 18234) exited]
> [Thread 0x7fc057667950 (LWP 18233) exited]
> on_txtOut_value_changed
> on_cboKeyFrame_changed
> on_cboSimpleSpeed_changed
> GenerateXML for an Effect
> [New Thread 0x7fc057667950 (LWP 18239)]
> [Thread 0x7fc057667950 (LWP 18239) exited]
> [New Thread 0x7fc057667950 (LWP 18240)]
> [New Thread 0x7fc05a343950 (LWP 18241)]
> [New Thread 0x7fc056344950 (LWP 18242)]
> [New Thread 0x7fc05bb48950 (LWP 18243)]
> [New Thread 0x7fc058ef6950 (LWP 18244)]
> [New Thread 0x7fc057e68950 (LWP 18245)]
> [Thread 0x7fc056344950 (LWP 18242) exited]
> [Thread 0x7fc05bb48950 (LWP 18243) exited]
> [Thread 0x7fc058ef6950 (LWP 18244) exited]
> [Thread 0x7fc057e68950 (LWP 18245) exited]
> [New Thread 0x7fc057e68950 (LWP 18246)]
> [New Thread 0x7fc058ef6950 (LWP 18247)]
> [New Thread 0x7fc05bb48950 (LWP 18248)]
> on_treeEffects_button_release_event
> burningtv
> <classes.effect.effect_metadata instance at 0x31d23b0>
> [New Thread 0x7fc056344950 (LWP 18249)]
> [New Thread 0x7fc05af45950 (LWP 18250)]
> on_btnRemoveEffect_clicked (<< Remove button pressed)
> [Thread 0x7fc056344950 (LWP 18249) exited]
> [Thread 0x7fc05af45950 (LWP 18250) exited]
> [New Thread 0x7fc05af45950 (LWP 18251)]
> [New Thread 0x7fc056344950 (LWP 18252)]
> on_btnClose_clicked
> on_frmClipProperties_destroy
> [Thread 0x7fc05bb48950 (LWP 18248) exited]
> [Thread 0x7fc057667950 (LWP 18240) exited]
> [Thread 0x7fc058ef6950 (LWP 18247) exited]
> [Thread 0x7fc057e68950 (LWP 18246) exited]
> [Thread 0x7fc05a343950 (LWP 18241) exited]
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0x7fc076dc76f0 (LWP 18136)]
>
> (gdb) bt
> #0  0x00007fc074114cc7 in IA__gtk_range_set_value (range=0x2b37c80,
> value=0)
>    at /build/buildd/gtk+2.0-2.16.1/gtk/gtkrange.c:1014
> #1  0x00007fc0746efce9 in ?? () from
> /var/lib/python-support/python2.6/gtk-2.0/gtk/_gtk.so
> #2  0x000000000041d3bd in PyObject_Call (func=0x31d9a28, arg=0x31edad0,
> kw=0x0) at ../Objects/abstract.c:2492
> #3  0x000000000049cd46 in PyEval_CallObjectWithKeywords (func=0x31d9a28,
> arg=0x31edad0, kw=0x0)
>    at ../Python/ceval.c:3575
> #4  0x00007fc07507235c in _pyglib_handler_marshal () from
> /usr/lib/libpyglib-2.0-python2.6.so.0
> #5  0x00007fc0752af20a in IA__g_main_context_dispatch (context=0x2b21280)
>    at /tmp/buildd/glib2.0-2.20.1/glib/gmain.c:1814
> #6  0x00007fc0752b28e0 in g_main_context_iterate (context=0x2b21280,
> block=1, dispatch=1,
>    self=<value optimized out>) at
> /tmp/buildd/glib2.0-2.20.1/glib/gmain.c:2448
> #7  0x00007fc0752b2dad in IA__g_main_loop_run (loop=0x385d460) at
> /tmp/buildd/glib2.0-2.20.1/glib/gmain.c:2656
> #8  0x00007fc0740d5bc7 in IA__gtk_main () at
> /build/buildd/gtk+2.0-2.16.1/gtk/gtkmain.c:1205
> #9  0x00007fc074729772 in ?? () from
> /var/lib/python-support/python2.6/gtk-2.0/gtk/_gtk.so
> #10 0x00000000004a2d39 in PyEval_EvalFrameEx (f=0x2899780, throwflag=<value
> optimized out>)
>    at ../Python/ceval.c:3690
> #11 0x00000000004a3dae in PyEval_EvalFrameEx (f=0x288bb10, throwflag=<value
> optimized out>)
>    at ../Python/ceval.c:3792
> #12 0x00000000004a4649 in PyEval_EvalCodeEx (co=0x7fc076cdd918,
> globals=<value optimized out>,
>    locals=<value optimized out>, args=0x0, argcount=0, kws=0x0, kwcount=0,
> defs=0x0, defcount=0, closure=0x0)
>    at ../Python/ceval.c:2968
> #13 0x00000000004a4762 in PyEval_EvalCode (co=0x0, globals=0x29da850,
> locals=0x1) at ../Python/ceval.c:522
> #14 0x00000000004c4c3c in PyRun_FileExFlags (fp=0x288baf0,
> filename=0x7fff7edf0679 "/usr/bin/openshot",
>    start=<value optimized out>, globals=0x2832750, locals=0x2832750,
> closeit=1, flags=0x7fff7edef080)
>    at ../Python/pythonrun.c:1335
> #15 0x00000000004c4f6b in PyRun_SimpleFileExFlags (fp=0x288baf0,
> filename=0x7fff7edf0679 "/usr/bin/openshot",
>    closeit=1, flags=0x7fff7edef080) at ../Python/pythonrun.c:931
> #16 0x00000000004189ce in Py_Main (argc=<value optimized out>,
> argv=0x7fff7edef198) at ../Modules/main.c:599
> ---Type <return> to continue, or q <return> to quit---
> #17 0x00007fc075dbd5a6 in __libc_start_main (main=0x417bb0 <main>, argc=2,
> ubp_av=0x7fff7edef198,
>    init=0x54a180 <__libc_csu_init>, fini=<value optimized out>,
> rtld_fini=<value optimized out>,
>    stack_end=0x7fff7edef188) at libc-start.c:220
> #18 0x0000000000417ae9 in _start () at ../sysdeps/x86_64/elf/start.S:113
>
> (gdb) info threads
>  110 Thread 0x7fc056344950 (LWP 18252)  pthread_cond_wait@@GLIBC_2.3.2 ()
>    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
>  109 Thread 0x7fc05af45950 (LWP 18251)  0x00007fc075e7b496 in *__GI___poll
> (fds=0x36f5720, nfds=2, timeout=98)
>    at ../sysdeps/unix/sysv/linux/poll.c:87
>  4 Thread 0x7fc05c550950 (LWP 18143)  0x00007fc075e7d742 in select () from
> /lib/libc.so.6
>  3 Thread 0x7fc05cd51950 (LWP 18142)  0x00007fc075e7d742 in select () from
> /lib/libc.so.6
>  2 Thread 0x7fc06a831950 (LWP 18141)  0x00007fc075e7d742 in select () from
> /lib/libc.so.6
> * 1 Thread 0x7fc076dc76f0 (LWP 18136)  0x00007fc074114cc7 in
> IA__gtk_range_set_value (range=0x2b37c80, value=0)
>    at /build/buildd/gtk+2.0-2.16.1/gtk/gtkrange.c:1014
>
>
>
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