Qml/Qt Camera not working in IMX6 Qt5.5 with gstreamer 1.0



  • Hi,
    The sample Qml/Qt Camera application itself is not working in Imx6 with Qt 5.5 - gstreamer 1.0.

    I am getting the following error while running it,

    (QmlCameraSample:3223): GLib-GObject-WARNING : invalid (NULL) pointer instance

    (QmlCameraSample:3223): GLib-GObject-CRITICAL : g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

    (QmlCameraSample:3223): GLib-GObject-WARNING : invalid (NULL) pointer instance

    (QmlCameraSample:3223): GLib-GObject-CRITICAL : g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

    (QmlCameraSample:3223): GLib-GObject-WARNING : invalid (NULL) pointer instance

    (QmlCameraSample:3223): GLib-GObject-CRITICAL : g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

    (QmlCameraSample:3223): GStreamer-CRITICAL : gst_object_ref_sink: assertion 'object != NULL' failed

    (QmlCameraSample:3223): GStreamer-CRITICAL : gst_element_get_bus: assertion 'GST_IS_ELEMENT (element)' failed

    (QmlCameraSample:3223): GStreamer-CRITICAL : gst_bus_add_watch_full: assertion 'GST_IS_BUS (bus)' failed

    (QmlCameraSample:3223): GStreamer-CRITICAL : gst_bus_set_sync_handler: assertion 'GST_IS_BUS (bus)' failed

    (QmlCameraSample:3223): GStreamer-CRITICAL : gst_object_ref: assertion 'object != NULL' failed

    (QmlCameraSample:3223): GLib-GObject-CRITICAL : g_object_set: assertion 'G_IS_OBJECT (object)' failed

    (QmlCameraSample:3223): GLib-GObject-CRITICAL : g_object_set: assertion 'G_IS_OBJECT (object)' failed
    No m_videoSink available!

    (QmlCameraSample:3223): GStreamer-CRITICAL : gst_object_ref: assertion 'object != NULL' failed

    (QmlCameraSample:3223): GStreamer-CRITICAL : gst_element_set_state: assertion 'GST_IS_ELEMENT (element)' failed

    (QmlCameraSample:3223): GLib-GObject-CRITICAL : g_object_get: assertion 'G_IS_OBJECT (object)' failed

    (QmlCameraSample:3223): GStreamer-CRITICAL : gst_element_set_state: assertion 'GST_IS_ELEMENT (element)' failed

    I think the main issue is "No m_videoSink available!".
    Not able to find the Video sink element.

    Is there any issue in Qt5.5 camera module?



  • I have same problem with GST, but in 0,1 version.
    GST launch working, but Qt cannot find m_videoSink, even modify qgstreamervideowindow.cpp doesn't work.


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