Comment # 10 on bug 1074273 from Patrick Finie

(In reply to Wolfgang Bauer from comment #9)
> (In reply to Patrick Finie from comment #8)
> > VLC, Audacious, openshot, davinchi resolve, steam, audacity, chrome all
> > work.
> 
> I don't know davinchi resolve, but the rest do *not* use gstreamer, so
> that's irrelevant here.
> 
> > I have had totem bite me so many times that i never install it.
> 
> Well, you could install it as a test.
> If it crashes too, it's definitely a problem in gstreamer itself, and not in
> phonon-gstreamer maybe (which I actually doubt anyway).
> 
> > Will
> > post an update if the vlc phonon fixes it, i do nont have a positive feeling
> > about it as the last time i used the vlc phonon backend it caused massive
> > instability to the point i was told to uninstall it.
> 
> I'm using phonon-vlc since years and never had a problem with it (and
> neither with gstreamer).
> 
> There was an incompatibility with Packman's vlc for some time (I think in
> openSUSE 13.2), because Packman offered a major new vlc version and no
> matching phonon-vlc, but that has been fixed nearly two years ago.
> 
> As vlc does work for you, phonon4qt5-backend-vlc should as well.

Installed the Phonon-vlc backend.  totem runs, kdenlive does not and crashes
when i open it.  Might do a video bug report.

error output after installing the vlc backend.

(gdb) run                                                                       
The program being debugged has been started already.                            
Start it from the beginning? (y or n) y                                         
Starting program: /usr/bin/kdenlive                                             
[Thread debugging using libthread_db enabled]                                   
Using host libthread_db library "/lib64/libthread_db.so.1".                     
[New Thread 0x7fffe2e04700 (LWP 4047)]                                          

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",                                                                   

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",                                                                   

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",                                                                   

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",

(kdenlive:4046): Gtk-WARNING **: Unable to locate theme engine in module_path:
"clearlooks",
[New Thread 0x7fffd0e7f700 (LWP 4048)]
No LADSPA plugins were found!

Check your LADSPA_PATH environment variable.
[New Thread 0x7fffb65f9700 (LWP 4059)]
[New Thread 0x7fffb5df8700 (LWP 4060)]
[New Thread 0x7fffb4c6a700 (LWP 4062)]
[New Thread 0x7fffa3fff700 (LWP 4063)]
[New Thread 0x7fffa37fe700 (LWP 4065)]
[New Thread 0x7fff93fff700 (LWP 4071)]
[Thread 0x7fff93fff700 (LWP 4071) exited]
[New Thread 0x7fff93fff700 (LWP 4072)]

(kdenlive:4046): GStreamer-CRITICAL **: gst_object_ref_sink: assertion 'object
!= NULL' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_object_ref_sink: assertion 'object
!= NULL' failed

(kdenlive:4046): GLib-GObject-CRITICAL **: g_object_set: assertion 'G_IS_OBJECT
(object)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_bin_add: assertion 'GST_IS_ELEMENT
(element)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_element_get_static_pad: assertion
'GST_IS_ELEMENT (element)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_ghost_pad_new: assertion
'GST_IS_PAD (target)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_element_add_pad: assertion
'GST_IS_PAD (pad)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_object_unref: assertion 'object !=
NULL' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_bin_add: assertion 'GST_IS_ELEMENT
(element)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_element_get_static_pad: assertion
'GST_IS_ELEMENT (element)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_ghost_pad_new: assertion
'GST_IS_PAD (target)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_element_add_pad: assertion
'GST_IS_PAD (pad)' failed

(kdenlive:4046): GStreamer-CRITICAL **: gst_object_unref: assertion 'object !=
NULL' failed
WARNING: Phonon::createPath: Cannot connect  Phonon::MediaObject ( no
objectName ) to  Phonon::AudioOutput ( no objectName ).

Thread 1 "kdenlive" received signal SIGSEGV, Segmentation fault.
0x00007fffa1f662a7 in ?? () from
/usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so

went into KDE settings and set the vlc backend preference higher.

......


Works!