#0  0x00007fe10da60d05 in *__GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <optimized out>
        selftid = 11312
#1  0x00007fe10da64ab6 in *__GI_abort () at abort.c:92
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x2478d40, sa_sigaction = 0x2478d40}, sa_mask = {__val = {140604577291329, 1024, 140604576874944, 140604573170592, 140604735598592, 150, 41859296, 4294967295, 140604573653219, 140734926487320, 41859296, 3068024, 0, 36758080, 37121776, 140604576894976}}, sa_flags = 389279012, sa_restorer = 0x5}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fe10de2951d in g_assertion_message (domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=0x4470e0 "add_video_preview_to_pipeline", message=0x27eb800 "assertion failed: (priv->video_input != NULL)") at /build/buildd/glib2.0-2.28.6/./glib/gtestutils.c:1358
        lstr = "674\000\377\177\000\000\026\vm\016\341\177\000\000\240\325\361\001\000\000\000\000\317`D\000\000\000\000"
        s = 0x27eb8e0 "empathy:ERROR:empathy-streamed-media-window.c:674:add_video_preview_to_pipeline: assertion failed: (priv->video_input != NULL)"
#3  0x00007fe10de29ae0 in g_assertion_message_expr (domain=0x44a826 "empathy", file=0x4467e8 "empathy-streamed-media-window.c", line=674, func=0x4470e0 "add_video_preview_to_pipeline", expr=<optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gtestutils.c:1369
        s = 0x0
#4  0x000000000041f168 in add_video_preview_to_pipeline (self=<optimized out>) at empathy-streamed-media-window.c:674
        priv = 0x20721f0
        preview = <optimized out>
#5  play_camera (window=<optimized out>, play=1) at empathy-streamed-media-window.c:747
        priv = 0x20721f0
        preview = <optimized out>
        state = <optimized out>
#6  0x000000000041f2a3 in display_video_preview (self=0x20720c0, display=1) at empathy-streamed-media-window.c:774
        priv = 0x20721f0
        __PRETTY_FUNCTION__ = "display_video_preview"
#7  0x0000000000423747 in enable_preview (self=0x20720c0) at empathy-streamed-media-window.c:874
        priv = 0x20721f0
        __PRETTY_FUNCTION__ = "enable_preview"
#8  0x00007fe10e6cf81c in g_closure_invoke (closure=0x2081ad0, return_value=0x0, n_param_values=2, param_values=0x23be4c0, invocation_hint=0x7fff674d01f0) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#9  0x00007fe10e6e1019 in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x1e16a40, emission_return=0x0, instance_and_params=0x23be4c0) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3252
        tmp = <optimized out>
        handler = 0x20d58a0
        accumulator = 0x0
        emission = {next = 0x7fff674d0620, instance = 0x1e16a40, ihint = {signal_id = 218, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x2082740
        handler_list = 0x20d58a0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 218
        max_sequential_handler_number = 14779
        return_value_altered = 1
#10 0x00007fe10e6ea258 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:2983
        instance_and_params = 0x23be4c0
        signal_return_type = 4
        param_values = 0x23be4d8
        node = 0x20827d0
        i = <optimized out>
        n_params = 1
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#11 0x00007fe10e6ea41f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fff674d04e0, reg_save_area = 0x7fff674d0420}}
#12 0x00007fe1107a04e4 in gtk_radio_action_activate (action=0x1e16b00) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkradioaction.c:361
        radio_action = 0x1e16b00
        toggle_action = 0x1e16b00
        tmp_action = 0x1e16a40
        tmp_list = 0x0
#13 0x00007fe10e6cf81c in g_closure_invoke (closure=0x20843d0, return_value=0x0, n_param_values=1, param_values=0x2489120, invocation_hint=0x7fff674d0630) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#14 0x00007fe10e6e07e3 in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x1e16b00, emission_return=0x0, instance_and_params=0x2489120) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3182
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x1e16b00, ihint = {signal_id = 216, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 34101376}
        class_closure = 0x20843d0
        handler_list = <optimized out>
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 216
        max_sequential_handler_number = 14779
        return_value_altered = <optimized out>
#15 0x00007fe10e6ea258 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:2983
        instance_and_params = 0x2489120
        signal_return_type = 4
        param_values = 0x2489138
        node = 0x2084c60
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#16 0x00007fe10e6ea41f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff674d0920, reg_save_area = 0x7fff674d0860}}
#17 0x00007fe1106a0103 in _gtk_action_emit_activate (action=0x1e16b00) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkaction.c:794
        group = 0x2071b20
#18 0x00007fe1106cf198 in gtk_check_menu_item_activate (menu_item=<optimized out>) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkcheckmenuitem.c:422
        check_menu_item = 0x1e16ec0
#19 0x00007fe10e6cf81c in g_closure_invoke (closure=0x200c910, return_value=0x0, n_param_values=1, param_values=0x2406a00, invocation_hint=0x7fff674d0a80) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#20 0x00007fe10e6e07e3 in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x1e16ec0, emission_return=0x0, instance_and_params=0x2406a00) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3182
        accumulator = 0x0
        emission = {next = 0x7fff674d0f80, instance = 0x1e16ec0, ihint = {signal_id = 117, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 33614976}
        class_closure = 0x200c910
        handler_list = <optimized out>
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 117
        max_sequential_handler_number = 14779
        return_value_altered = <optimized out>
#21 0x00007fe10e6ea258 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:2983
        instance_and_params = 0x2406a00
        signal_return_type = 4
        param_values = 0x2406a18
        node = 0x200c9b0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#22 0x00007fe10e6ea41f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff674d0d70, reg_save_area = 0x7fff674d0cb0}}
#23 0x00007fe11087e6ce in IA__gtk_widget_activate (widget=0x1e16ec0) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkwidget.c:5019
        __PRETTY_FUNCTION__ = "IA__gtk_widget_activate"
#24 0x00007fe11077794d in IA__gtk_menu_shell_activate_item (menu_shell=0x1ff3840, menu_item=0x1e16ec0, force_deactivate=<optimized out>) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmenushell.c:1361
        slist = <optimized out>
        shells = 0x228dc50
        deactivate = <optimized out>
        __PRETTY_FUNCTION__ = "IA__gtk_menu_shell_activate_item"
#25 0x00007fe110777ce5 in gtk_menu_shell_button_release (widget=0x1ff3840, event=<optimized out>) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmenushell.c:788
        submenu = 0x0
        menu_item = 0x1e16ec0
        deactivate = 1
        menu_shell = 0x1ff3840
        priv = 0x1ff3970
#26 0x00007fe110763578 in _gtk_marshal_BOOLEAN__BOXED (closure=0x1ffa8f0, return_value=0x7fff674d0fd0, n_param_values=<optimized out>, param_values=0x23be2a0, invocation_hint=<optimized out>, marshal_data=<optimized out>) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmarshalers.c:86
        callback = 0x7fe11076c420 <gtk_menu_button_release>
        cc = 0x1ffa8f0
        data1 = 0x1ff3840
        data2 = <optimized out>
        v_return = <optimized out>
        __PRETTY_FUNCTION__ = "_gtk_marshal_BOOLEAN__BOXED"
#27 0x00007fe10e6cf81c in g_closure_invoke (closure=0x1ffa8f0, return_value=0x7fff674d0fd0, n_param_values=2, param_values=0x23be2a0, invocation_hint=0x7fff674d0f90) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#28 0x00007fe10e6e0e1f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x1ff3840, emission_return=0x7fff674d1140, instance_and_params=0x23be2a0) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3290
        accumulator = 0x1ffabf0
        emission = {next = 0x0, instance = 0x1ff3840, ihint = {signal_id = 55, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 33609936}
        class_closure = 0x1ffa8f0
        handler_list = 0x0
        return_accu = 0x7fff674d0fd0
        accu = {g_type = 20, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 55
        max_sequential_handler_number = 14776
        return_value_altered = 0
#29 0x00007fe10e6e9fa9 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:2993
        return_value = {g_type = 20, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        error = 0x0
        rtype = 20
        static_scope = 0
        instance_and_params = 0x23be2a0
        signal_return_type = 20
        param_values = 0x23be2b8
        node = 0x1ffa960
        i = <optimized out>
        n_params = 1
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#30 0x00007fe10e6ea41f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fff674d1280, reg_save_area = 0x7fff674d11c0}}
#31 0x00007fe11087f4d1 in gtk_widget_event_internal (widget=0x1ff3840, event=0x20ad310) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkwidget.c:4988
        signal_num = <optimized out>
        return_val = 0
#32 0x00007fe110761763 in IA__gtk_propagate_event (widget=0x1ff3840, event=0x20ad310) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmain.c:2495
        tmp = <optimized out>
        handled_event = <optimized out>
        __PRETTY_FUNCTION__ = "IA__gtk_propagate_event"
#33 0x00007fe110761a5b in IA__gtk_main_do_event (event=0x20ad310) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmain.c:1685
        event_widget = <optimized out>
        grab_widget = 0x1e16ec0
        window_group = <optimized out>
        rewritten_event = <optimized out>
        tmp_list = <optimized out>
        __PRETTY_FUNCTION__ = "IA__gtk_main_do_event"
#34 0x00007fe1101725cc in gdk_event_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/gtk+2.0-2.24.4/gdk/x11/gdkevents-x11.c:2377
        display = <optimized out>
        event = 0x20ad310
#35 0x00007fe10de03bcd in g_main_dispatch (context=0x1e883a0) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:2440
        dispatch = 0x7fe110172580 <gdk_event_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x1e882b0, next = 0x0}
        need_destroy = <optimized out>
        source = 0x1e882b0
        current = 0x203b5a0
        i = <optimized out>
#36 g_main_context_dispatch (context=0x1e883a0) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3013
No locals.
#37 0x00007fe10de043a8 in g_main_context_iterate (context=0x1e883a0, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3091
        max_priority = 2147483647
        timeout = 304
        some_ready = 1
        nfds = 5
        allocated_nfds = <optimized out>
        fds = <optimized out>
#38 0x00007fe10de049f2 in g_main_loop_run (loop=0x20365b0) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#39 0x00007fe110760af7 in IA__gtk_main () at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmain.c:1257
        tmp_list = <optimized out>
        functions = 0x0
        init = <optimized out>
        loop = 0x20365b0
#40 0x0000000000419bfc in main (argc=1, argv=0x7fff674d1628) at empathy-av.c:182
        optcontext = <optimized out>
        options = {{long_name = 0x0, short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x0, description = 0x0, arg_description = 0x0}}
        debug_sender = 0x2017b50
        call_factory = 0x2017cd0
        error = 0x0
        __PRETTY_FUNCTION__ = "main"