video can't no play under QT5.8.0,mp3 plays well

[SGaist]

Can you check which version of gstreamer is linked to the backend ?

[JiujiuTong]

@SGaist
here is the output of my host, only version 1.0 was found:
dpkg -l | grep -i "gstreamer"
ii gir1.2-gst-plugins-bad-1.0 1.8.3-1ubuntu0.2 amd64 GObject introspection data for the GStreamer libraries from the "bad" set
ii gir1.2-gst-plugins-base-1.0 1.8.3-1ubuntu0.2 amd64 GObject introspection data for the GStreamer Plugins Base library
ii gir1.2-gstreamer-1.0 1.8.3-1~ubuntu0.1 amd64 GObject introspection data for the GStreamer library
ii gnome-video-effects 0.4.1-3ubuntu1 all Collection of GStreamer effects
ii gstreamer1.0-alsa:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer plugin for ALSA
ii gstreamer1.0-clutter 2.0.18-1 amd64 Clutter PLugin for GStreamer 1.0
ii gstreamer1.0-clutter-3.0 3.0.18-1 amd64 Clutter PLugin for GStreamer 1.0
ii gstreamer1.0-crystalhd 1:0.0~git20110715.fdd2f19-11build1 amd64 Crystal HD Video Decoder (GStreamer plugin)
ii gstreamer1.0-doc 1.8.3-1~ubuntu0.1 all GStreamer core documentation and manuals
ii gstreamer1.0-dvswitch 0.1.1-1 amd64 GStreamer plugin source from DVswitch
ii gstreamer1.0-espeak 0.4.0-1 amd64 GStreamer plugin for eSpeak speech synthesis
ii gstreamer1.0-fluendo-mp3:amd64 0.10.32.debian-1 amd64 Fluendo mp3 decoder GStreamer 1.0 plugin
ii gstreamer1.0-hybris:i386 1.8.3-1ubuntu0.2 i386 GStreamer plugins from hybris
ii gstreamer1.0-libav:amd64 1.8.3-1ubuntu0.2 amd64 libav plugin for GStreamer
ii gstreamer1.0-libav-dbg:amd64 1.8.3-1ubuntu0.2 amd64 libav plugin for GStreamer (debug symbols)
ii gstreamer1.0-nice:amd64 0.1.13-0ubuntu2 amd64 ICE library (GStreamer plugin)
ii gstreamer1.0-packagekit 0.8.17-4ubuntu6~gcc5.4ubuntu1.1 amd64 GStreamer plugin to install codecs using PackageKit
ii gstreamer1.0-plugins-bad:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer plugins from the "bad" set
ii gstreamer1.0-plugins-bad-dbg:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer plugins from the "bad" set (debug symbols)
ii gstreamer1.0-plugins-bad-doc 1.8.3-1ubuntu0.2 all GStreamer documentation for plugins from the "bad" set
ii gstreamer1.0-plugins-bad-faad:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer faad plugin from the "bad" set
ii gstreamer1.0-plugins-bad-videoparsers:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer videoparsers plugin from the "bad" set
ii gstreamer1.0-plugins-base:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer plugins from the "base" set
ii gstreamer1.0-plugins-base:i386 1.8.3-1ubuntu0.2 i386 GStreamer plugins from the "base" set
ii gstreamer1.0-plugins-base-apps 1.8.3-1ubuntu0.2 amd64 GStreamer helper programs from the "base" set
ii gstreamer1.0-plugins-base-dbg:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer plugins from the "base" set
ii gstreamer1.0-plugins-base-doc 1.8.3-1ubuntu0.2 all GStreamer documentation for plugins from the "base" set
ii gstreamer1.0-plugins-good:amd64 1.8.3-1ubuntu0.4 amd64 GStreamer plugins from the "good" set
ii gstreamer1.0-plugins-good-dbg:amd64 1.8.3-1ubuntu0.4 amd64 GStreamer plugins from the "good" set
ii gstreamer1.0-plugins-good-doc 1.8.3-1ubuntu0.4 all GStreamer documentation for plugins from the "good" set
ii gstreamer1.0-plugins-ugly:amd64 1.8.3-1ubuntu0.1 amd64 GStreamer plugins from the "ugly" set
ii gstreamer1.0-plugins-ugly-amr:amd64 1.8.3-1ubuntu0.1 amd64 GStreamer plugins from the "ugly" set
ii gstreamer1.0-plugins-ugly-dbg:amd64 1.8.3-1ubuntu0.1 amd64 GStreamer plugins from the "ugly" set (debug symbols)
ii gstreamer1.0-plugins-ugly-doc 1.8.3-1ubuntu0.1 all GStreamer documentation for plugins from the "ugly" set
ii gstreamer1.0-pocketsphinx:amd64 0.8.0+real5prealpha-1ubuntu2 amd64 Speech recognition tool - gstreamer plugin
ii gstreamer1.0-pulseaudio:amd64 1.8.3-1ubuntu0.4 amd64 GStreamer plugin for PulseAudio
ii gstreamer1.0-tools 1.8.3-1~ubuntu0.1 amd64 Tools for use with GStreamer
ii gstreamer1.0-vaapi:amd64 1.8.3-1~ubuntu0.1 amd64 VA-API plugins for GStreamer
ii gstreamer1.0-vaapi-doc 1.8.3-1~ubuntu0.1 all GStreamer VA-API documentation and manuals
ii gstreamer1.0-x:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer plugins for X11 and Pango
ii libclutter-gst-3.0-0:amd64 3.0.18-1 amd64 Open GL based interactive canvas library GStreamer elements
ii libges-1.0-0 1.6.2-1 amd64 GStreamer editing services (shared library)
ii libges-1.0-dev 1.6.2-1 amd64 GStreamer editing services (development files)
ii libgstreamer-plugins-bad1.0-0:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer development files for libraries from the "bad" set
ii libgstreamer-plugins-bad1.0-0:i386 1.8.3-1ubuntu0.2 i386 GStreamer development files for libraries from the "bad" set
ii libgstreamer-plugins-bad1.0-dev 1.8.3-1ubuntu0.2 amd64 GStreamer development files for libraries from the "bad" set
ii libgstreamer-plugins-base1.0-0:amd64 1.8.3-1ubuntu0.2 amd64 GStreamer libraries from the "base" set
ii libgstreamer-plugins-base1.0-0:i386 1.8.3-1ubuntu0.2 i386 GStreamer libraries from the "base" set
ii libgstreamer-plugins-base1.0-dev 1.8.3-1ubuntu0.2 amd64 GStreamer development files for libraries from the "base" set
ii libgstreamer-plugins-good1.0-0:amd64 1.8.3-1ubuntu0.4 amd64 GStreamer development files for libraries from the "good" set
ii libgstreamer-plugins-good1.0-dev 1.8.3-1ubuntu0.4 amd64 GStreamer development files for libraries from the "good" set
ii libgstreamer1.0-0:amd64 1.8.3-1~ubuntu0.1 amd64 Core GStreamer libraries and elements
ii libgstreamer1.0-0:i386 1.8.3-1~ubuntu0.1 i386 Core GStreamer libraries and elements
ii libgstreamer1.0-0-dbg:amd64 1.8.3-1~ubuntu0.1 amd64 Core GStreamer libraries and elements
ii libgstreamer1.0-dev 1.8.3-1~ubuntu0.1 amd64 GStreamer core development files
ii libgstreamermm-1.0-0v5:amd64 1.4.3+dfsg-5 amd64 C++ wrapper library for GStreamer (shared libraries)
ii libgstreamermm-1.0-dev:amd64 1.4.3+dfsg-5 amd64 C++ wrapper library for GStreamer (development files)
ii libqgsttools-p1:amd64 5.5.1-4ubuntu2 amd64 GStreamer tools for Qt 5 Multimedia module
ii libqt5gstreamer-1.0-0:amd64 1.2.0-3 amd64 C++ bindings library for GStreamer with a Qt-style API - Qt 5 build
ii libqt5gstreamer-dev 1.2.0-3 amd64 Development headers for QtGStreamer - Qt 5 build
ii libqt5gstreamerquick-1.0-0:amd64 1.2.0-3 amd64 QtGStreamerQuick library - Qt 5 build
ii libqt5gstreamerui-1.0-0:amd64 1.2.0-3 amd64 QtGStreamerUi library - Qt 5 build
ii libqt5gstreamerutils-1.0-0:amd64 1.2.0-3 amd64 QtGStreamerUtils library - Qt 5 build
ii libqtgstreamer-1.0-0:amd64 1.2.0-3 amd64 C++ bindings library for GStreamer with a Qt-style API
ii libqtgstreamer-dev 1.2.0-3 amd64 Development headers for QtGStreamer
ii libqtgstreamerui-1.0-0:amd64 1.2.0-3 amd64 QtGStreamerUi library
ii libqtgstreamerutils-1.0-0:amd64 1.2.0-3 amd64 QtGStreamerUtils library
ii libreoffice-avmedia-backend-gstreamer 1:5.1.6~rc2-0ubuntu1~xenial2 amd64 GStreamer backend for LibreOffice
ii qml-module-qtgstreamer:amd64 1.2.0-3 amd64 QML plugins from QtGStreamer - Qt 5 build
ii qtgstreamer-plugins:amd64 1.2.0-3 amd64 GStreamer plugins from QtGStreamer
ii qtgstreamer-plugins-qt5:amd64 1.2.0-3 amd64 GStreamer plugins from QtGStreamer - Qt 5 build
ii totem 3.18.1-1ubuntu4 amd64 Simple media player for the GNOME desktop based on GStreamer
Is there other ways to check which version Gstreamer is linked?

[SGaist]

ldd /path/to/QtMultimedia/plugin_file

[JiujiuTong]

@SGaist
my Qt5.8 is installed by qt-opensource-linux-x64-5.8.0.so i find libgstmediaplayer.so under the "Qt5.8.0/5.8/gcc_64/plugins/mediaservice" and the output of "ldd libgstmediaplayer.so " :
linux-vdso.so.1 => (0x00007ffe90bfb000)
libqgsttools_p.so.1 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libqgsttools_p.so.1 (0x00007f3df06e0000)
libQt5MultimediaWidgets.so.5 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libQt5MultimediaWidgets.so.5 (0x00007f3df04c1000)
libQt5Multimedia.so.5 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libQt5Multimedia.so.5 (0x00007f3df01b7000)
libQt5Widgets.so.5 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libQt5Widgets.so.5 (0x00007f3def986000)
libQt5Gui.so.5 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libQt5Gui.so.5 (0x00007f3def1ea000)
libQt5Network.so.5 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libQt5Network.so.5 (0x00007f3deee64000)
libQt5Core.so.5 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libQt5Core.so.5 (0x00007f3dee744000)
libGL.so.1 => /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1 (0x00007f3dee4a9000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f3dee28b000)
libgstaudio-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0 (0x00007f3dee02e000)
libgstvideo-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstvideo-1.0.so.0 (0x00007f3dedda8000)
libgstpbutils-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstpbutils-1.0.so.0 (0x00007f3dedb72000)
libgstapp-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstapp-1.0.so.0 (0x00007f3ded964000)
libgstbase-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0 (0x00007f3ded700000)
libgstreamer-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0 (0x00007f3ded3d5000)
libgobject-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f3ded182000)
libpulse-mainloop-glib.so.0 => /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0 (0x00007f3decf7d000)
libpulse.so.0 => /usr/lib/x86_64-linux-gnu/libpulse.so.0 (0x00007f3decd2c000)
libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f3deca1b000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f3dec699000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f3dec38f000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f3dec179000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f3debdb0000)
libasound.so.2 => /usr/lib/x86_64-linux-gnu/libasound.so.2 (0x00007f3debaaf000)
libQt5OpenGL.so.5 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libQt5OpenGL.so.5 (0x00007f3deb858000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f3deb63d000)
libicui18n.so.56 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libicui18n.so.56 (0x00007f3deb1a4000)
libicuuc.so.56 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libicuuc.so.56 (0x00007f3deadeb000)
libicudata.so.56 => /home/tong/Qt5.8.0/5.8/gcc_64/plugins/mediaservice/./../../lib/libicudata.so.56 (0x00007f3de9408000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f3de9204000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f3de8ffb000)
libgthread-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0 (0x00007f3de8df9000)
/lib64/ld-linux-x86-64.so.2 (0x000055e6931f6000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f3de8bd0000)
libxcb-dri3.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri3.so.0 (0x00007f3de89cc000)
libxcb-present.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-present.so.0 (0x00007f3de87c9000)
libxcb-sync.so.1 => /usr/lib/x86_64-linux-gnu/libxcb-sync.so.1 (0x00007f3de85c2000)
libxshmfence.so.1 => /usr/lib/x86_64-linux-gnu/libxshmfence.so.1 (0x00007f3de83be000)
libglapi.so.0 => /usr/lib/x86_64-linux-gnu/libglapi.so.0 (0x00007f3de818f000)
libXext.so.6 => /usr/lib/x86_64-linux-gnu/libXext.so.6 (0x00007f3de7f7d000)
libXdamage.so.1 => /usr/lib/x86_64-linux-gnu/libXdamage.so.1 (0x00007f3de7d79000)
libXfixes.so.3 => /usr/lib/x86_64-linux-gnu/libXfixes.so.3 (0x00007f3de7b73000)
libX11-xcb.so.1 => /usr/lib/x86_64-linux-gnu/libX11-xcb.so.1 (0x00007f3de7971000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f3de7636000)
libxcb-glx.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-glx.so.0 (0x00007f3de741d000)
libxcb-dri2.so.0 => /usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0 (0x00007f3de7218000)
libxcb.so.1 => /usr/lib/x86_64-linux-gnu/libxcb.so.1 (0x00007f3de6ff5000)
libXxf86vm.so.1 => /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1 (0x00007f3de6def000)
libdrm.so.2 => /usr/lib/x86_64-linux-gnu/libdrm.so.2 (0x00007f3de6be0000)
libgsttag-1.0.so.0 => /usr/lib/x86_64-linux-gnu/libgsttag-1.0.so.0 (0x00007f3de69a4000)
liborc-0.4.so.0 => /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0 (0x00007f3de6724000)
libgmodule-2.0.so.0 => /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f3de651f000)
libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007f3de6317000)
libpulsecommon-8.0.so => /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so (0x00007f3de609b000)
libjson-c.so.2 => /lib/x86_64-linux-gnu/libjson-c.so.2 (0x00007f3de5e90000)
libdbus-1.so.3 => /lib/x86_64-linux-gnu/libdbus-1.so.3 (0x00007f3de5c44000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007f3de59d3000)
libXau.so.6 => /usr/lib/x86_64-linux-gnu/libXau.so.6 (0x00007f3de57ce000)
libXdmcp.so.6 => /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007f3de55c8000)
libsystemd.so.0 => /lib/x86_64-linux-gnu/libsystemd.so.0 (0x00007f3de5542000)
libwrap.so.0 => /lib/x86_64-linux-gnu/libwrap.so.0 (0x00007f3de5338000)
libsndfile.so.1 => /usr/lib/x86_64-linux-gnu/libsndfile.so.1 (0x00007f3de50cf000)
libasyncns.so.0 => /usr/lib/x86_64-linux-gnu/libasyncns.so.0 (0x00007f3de4ec8000)
libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f3de4ca6000)
liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f3de4a83000)
libgcrypt.so.20 => /lib/x86_64-linux-gnu/libgcrypt.so.20 (0x00007f3de47a2000)
libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007f3de4589000)
libFLAC.so.8 => /usr/lib/x86_64-linux-gnu/libFLAC.so.8 (0x00007f3de4313000)
libvorbisenc.so.2 => /usr/lib/x86_64-linux-gnu/libvorbisenc.so.2 (0x00007f3de406a000)
libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f3de3e4f000)
libgpg-error.so.0 => /lib/x86_64-linux-gnu/libgpg-error.so.0 (0x00007f3de3c3a000)
libogg.so.0 => /usr/lib/x86_64-linux-gnu/libogg.so.0 (0x00007f3de3a31000)
libvorbis.so.0 => /usr/lib/x86_64-linux-gnu/libvorbis.so.0 (0x00007f3de3805000)
so it is gstreamer1.0 linked , is it right?

[jsulm]

@JiujiuTong Yes, looks like 1.0

[JiujiuTong]

@jsulm @SGaist
thank you , but why video can't play? the file is OK... can you help me to figure it out?

[JiujiuTong]

@JiujiuTong said in video can't no play under QT5.8.0,mp3 plays well:

@jsulm @SGaist
thank you , but why video can't play? the file is OK... can you help me to figure it out?

@SGaist , it seems linked gstreamer version is 1.0. any ideas to check why video can't play with QT5.8?

[SGaist]

Enable the QtMultimedia logging category, that might give you more information.

[JiujiuTong]

@SGaist
can you give me more details please? for example, how to enable the QtMultimedia logging category.thank you

[SGaist]

See QLoggingCategory with qt.multimedia

[JiujiuTong]

@SGaist
thank you very much