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    • UNSOLVED Qt Android gstreamer , qtquick2videosink slow down video.
      Mobile and Embedded • qml android video gstreamer plugins • • DkDkDk  

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      Sorry, I meant for video encoding. In any case, I would separate the streaming and the preview if possible. Generating the network stream for one or more device can be very heavy CPU wise.
    • UNSOLVED I want to decode h.264 encoded NAL units using gstreamer and display video in QT
      Mobile and Embedded • gstreamer gstreamer1.0 gstreamer video h264 qt5.11.3 c++ • • vicky_mac  

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      Hi, That's rather a question you should bring to the GStreamer folks. For the Qt side you can then use QMediaPlayer as shown here with a custom pipeline.
    • UNSOLVED How to start gstreamer pipeline on click of qt button and stoping it on click of another button
      Mobile and Embedded • qt5 gstreamer gstreamer video qt 5.11.3 • • vicky_mac  

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      @vicky_mac you should show the code you are using to manage your pipeline.
    • UNSOLVED QML Video not rendered
      Mobile and Embedded • qml embedded linux gstreamer • • Rcc21  

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      @sierdzio thanks for the example, I think the resolution type is a bit misleading with regard to the reason the bug was closed.
    • UNSOLVED QAudioDecoder returns not valid QAudioFormat on Xubuntu 18.04
      General and Desktop • gstreamer audio qaudiodecoder xubuntu • • AlxxlA  

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    • UNSOLVED Optimizing CPU/RAM usage when playing video with Qt on Raspberry
      Mobile and Embedded • video gstreamer raspberry optimization • • etiennedm  

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    • UNSOLVED CameraRecorder without audio
      QML and Qt Quick • camera gstreamer audio camerabin recording • • YenZi  

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      @Cleiton-Bueno thanks for your suggestion. I have disabled audio in my kernel completely now. Now I get the message CameraBin warning: "Could not open audio device for recording." which shows, that I really removed audio support. Unfortunately, this still doesn't solve my basic issue, which is a extremely sluggish video output when the videoRecorder property is enabled in the Camera. That means, the audio encoding was not causing this problem at all. Thx, Jens
    • QMediaPlayer on Ubuntu 16.04 GStreamer error
      General and Desktop • qmediaplayer video ubuntu gstreamer • • lpares12  

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      Solved, gstreamer-0.10-ffmpeg was missing. sudo add-apt-repository ppa:mc3man/gstffmpeg-keep sudo apt-get update sudo apt-get install gstreamer0.10-ffmpeg UPDATE: Not really solved, using this plugin breaks GStreamer: $ export GST_DEBUG=2 $ ./RPIStreamer 0:00:01.232878440 29169 0x7f0414007320 WARN qtdemux qtdemux_types.c:191:qtdemux_type_get: unknown QuickTime node type iods 0:00:01.233010807 29169 0x7f0414007320 WARN qtdemux qtdemux_types.c:191:qtdemux_type_get: unknown QuickTime node type avc1 0:00:01.233055875 29169 0x7f0414007320 WARN qtdemux qtdemux_types.c:191:qtdemux_type_get: unknown QuickTime node type avcC 0:00:01.233095592 29169 0x7f0414007320 WARN qtdemux qtdemux_types.c:191:qtdemux_type_get: unknown QuickTime node type btrt 0:00:01.235499777 29169 0x7f0414007320 WARN qtdemux qtdemux.c:6006:qtdemux_parse_segments:<qtdemux0> streaming; discarding edit list segments 0:00:01.235563181 29169 0x7f0414007320 WARN qtdemux qtdemux.c:7044:qtdemux_parse_trak:<qtdemux0> unknown version 00000000 0:00:01.236318578 29169 0x7f0414007320 WARN qtdemux qtdemux.c:6006:qtdemux_parse_segments:<qtdemux0> streaming; discarding edit list segments 0:00:01.264479125 29169 0x7f0414007680 WARN playsinkconvertbin gstplaysinkconvertbin.c:481:gst_play_sink_convert_bin_cache_converter_caps:<GstPlaySinkAudioConvert@0x7f03f801a050> No conversion elements 0:00:01.290541635 29169 0x7f04140071e0 WARN ffmpeg gstffmpegdec.c:2299:gst_ffmpegdec_frame:<ffdec_h2640> ffdec_h264: decoding error (len: -1, have_data: 0) 0:00:01.297533958 29169 0xba4d40 WARN basesrc gstbasesrc.c:2625:gst_base_src_loop:<source> error: Internal data flow error. 0:00:01.297562286 29169 0xba4d40 WARN basesrc gstbasesrc.c:2625:gst_base_src_loop:<source> error: streaming task paused, reason not-negotiated (-4) Error: "Internal data flow error."
    • UNSOLVED Qt 5.6.1 from online installer and GStreamer on (K)Ubuntu 16.10 - MediaPlayer sound issue
      General and Desktop • qt5.6 qtmultimedia gstreamer mediaplayer online installe • • Larpon  

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    • UNSOLVED Qt 5.6 and GLIB (event loop)
      General and Desktop • qtmultimedia gstreamer glib • • lolopolosko  

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    • UNSOLVED Error: No decoder available for type 'video/x-h264
      General and Desktop • qt5 gstreamer multimedia gstreamer1.0 • • Aras  

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      Hi, Check the version of gstreamer that the plugin uses. It could be 0.1. In that case the quick and dirty way is to install that version of gstreamer with the corresponding plugin packages. Hope it helps
    • UNSOLVED UYVY camera Preview
      General and Desktop • camera gstreamer yuv cameraviewfinde uyvy • • RiteshPanchal  

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      I have successfully build QT 5.8.0 on nVidia TX1 board. But with QML video surface sink element still getting Reddish preview. https://drive.google.com/open?id=0B8d7zQv-G71oM1JONzlpR2t1OWc I also tried 5.8.0 QT C++ camera example. but for this example camera preview seen for 1-2 sec and then ubuntu hangs. And also the preview appear with wrong color conversion format. So i tried minimal camera example. https://drive.google.com/open?id=0B8d7zQv-G71odXN6ZTkxRTRuOGM But when i start camera following error comes Unable to open the camera "" for read to query the parameter info: "No such file or directory" So how can i preview UYVY camera preview in this example?
    • UNSOLVED GStreamer configuration
      General and Desktop • gstreamer qt multimedia • • mrFicve  

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      Indeed, you can't do it without modifying Qt even if you add a control to the plugin to modify that parameter. QtGstreamer provides a QML sink so you don't have to implement it.
    • SOLVED qmediaplayer no video
      General and Desktop • linux qmediaplayer gstreamer qvideowidget qt 5.6.1 • • pauledd  

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      Don't think this is solved, uninstalling gst-plugins-vaapi is a workaround at best. Bug: Qt Multimedia GStreamer backend doesn't support HW-accelerated video decoding https://bugreports.qt.io/browse/QTBUG-23761
    • UNSOLVED Overlaying text on top of a QtGStreamer video display
      General and Desktop • gstreamer overlay qwidgetvideosin • • ericg22  

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    • gstreamer opengl video sink
      Installation and Deployment • opengl video gstreamer • • Mark81  

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      Hi, Not a direct answer but maybe the QtGStreamer might be an option. Hope it helps
    • Application crashes using Qt and Gstreamer with Suse Leap 42.1
      General and Desktop • linux crash gstreamer • • Dave Hubberstey  

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    • UNSOLVED QML. Display Gstreamer video
      General and Desktop • qml gstreamer gstreamer1.0 gstreamer video • • don-prog  

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      @don-prog said: And what about QQuickItem You can subclass QQuickItem to create a custom item that you can then use in a Qt Quick scene. In this subclass you can use gstreamer to render a video. So, yes, you can use QQuickItem here. Simply speaking, this is what the Qt Quick Video Item does, too. But please don't ask me how to use gstreamer directly because I have no idea :-)
    • SOLVED No service found (mediaplayer) in Ubuntu 14.04
      General and Desktop • qml linux gstreamer mediaplayer service • • jonyAL  

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      Solved using version 5.4.2.. Should to exist a bug with missing libraries for Qt 5.5 version
    • UNSOLVED Display Gstreamer video on Android
      Mobile and Embedded • android opengl gstreamer gstreamer video • • don-prog  

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      @LuJoRi hello! I'm very sorry for the so late reply, but I just had some urgent problems, and I had to leave this forum and work with another things. I see that you shared your advice and sample for this issue as you promised. So I want to thank you for this! Unfortunately, I had to do other things, but I think that you helped other users (including chaudhry) to solve this not simple task! :) Sorry and thank you one more time!
    • Qt 5.6 + Ubuntu + Multimedia + GStreamer
      General and Desktop • ubuntu gstreamer ubuntu 14.04 qt multimedia • • Alex Court  

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      It looks like you're using the Ubuntu packaged Qt and not the one you installed using the installer. You should check the Kit in QtCreator you're using.
    • UNSOLVED Video overlay with Qt 4.8
      Mobile and Embedded • video gstreamer overlay qt4.8.6 • • PierreO  

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    • UNSOLVED Qt and GStreamer
      General and Desktop • gstreamer event loop • • tlvju  

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      Hi, Maybe the GStreamer QtGstreamer module might be of interest. Hope it helps
    • UNSOLVED QtMultimedia Video Play example
      Mobile and Embedded • qt5 gstreamer qvideowidget • • Zola  

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      It will be a good place to start- see if all gstreamer plugins are installed in your device. You can also try ldd and make sure no links are broken.
    • UNSOLVED GStreamer crash with QMediaPlayer
      General and Desktop • qmediaplayer gstreamer ubuntu 14.04 qt 5.5.1 qt 5.2.1 • • enmaniac  

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      I have opened the bug ticket https://bugreports.qt.io/browse/QTBUG-50460. Perhaps it is really a bug and will get fixed in the future ;D
    • QtMultimedia cross compiling libqgsttools.so is missing
      Mobile and Embedded • cross compile qtmultimedia gstreamer • • IL  

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      What version of Qt is it ? GStreamer 1.0 support is pretty recent so you might have to enable it when configuring depending on your Qt version
    • [HELP] GPU Accelerated QtMultimedia on Raspberry Pi 2
      Mobile and Embedded • raspberry pi qtmultimedia gstreamer gpu • • kafanti  

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    • Error accessing GStreamer Library - Program excited with code 0xc0000135 when Debugging
      General and Desktop • gstreamer debugger libraries external • • dionis.  

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      Hi, You are probably missing the path to your GStreamer dlls in your PATH (the one in Qt Creator not for your system) You can modify it in the Run part of the Projects Panel
    • qt + android + pkg-config: can not find gstreamer-android library
      Mobile and Embedded • qt5.5 gstreamer pkg-config • • tools  

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      @Huulivoide With that set I get this output: [tools@steinwurf-124 build-qtandroid-Android_for_armeabi_v7a_GCC_4_9_Qt_5_5_0-Debug]$ /home/tools/Qt/5.5/android_armv7/bin/qmake -spec android-g++ CONFIG+=debug CONFIG+=declarative_debug CONFIG+=qml_debug -o Makefile ../qtandroid/qtandroid.pro Project ERROR: gstreamer-1.0 development package not found
    • Integration of Gstreamer.
      General and Desktop • qt5 gstreamer integration • • JasonB  

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      It's already integrated. No need to do anything special. See this and this.
    • How to crop Qml VideoOutput with Camera as the source?
      General and Desktop • qml qt5.4 camera gstreamer • • lalvishnu12  

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    • Qt5.5 QML Video Gstremer1.0
      Mobile and Embedded • qml qt5.5 video gstreamer rpi • • josexavierpt  

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      I have the same issue. Anyone got the solution ?
    • Qt5.5 QML Video Gstremer1.0
      QtonPi • qml video gstreamer • • josexavierpt  

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    • Cannot play .mp4 videos on IMX6 linux_bsp image
      Mobile and Embedded • gstreamer imx6 linuxbsp videos • • alvinNew  

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      This maybe due to the fact that our IMX6 board does not have the plugins/mediaservice particularly the libgstmediaplayer.so. Does anyone know how to create this library? And which directory in the IMX6 do I put this if I have successfully cross compiled it?
    • Need Help with GStreamer and Invalid URI in QT Multimedia
      General and Desktop • qtmultimedia gstreamer taglib tags • • xtiwix  

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      The solution from SGaist helped me out when I had the same error messages, many thanks!
    • What GStreamer pipelining is used in QtMultimedia for video playback?
      General and Desktop • qtmultimedia video gstreamer • • nickaein  

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    • Playing H.264 video in QT 5.4.1
      General and Desktop • qtmultimedia gstreamer h264 ffmpeg • • nickaein  

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      @Wieland These didn't help either: sudo apt-get install gstreamer1.0-* sudo apt-get install libav-tools ffmpeg vlc I submitted a question on Qt pipelining. The thing that bothers me is I cannot get QtMultimedia work on a clean installation. Nevertheless, I might abandon QtMultimedia and use some other library to embed the video in my Qt application (e.g. VLC-Qt).
    • QT 5.4.0 Camera not working on BeagleBone Black
      Mobile and Embedded • qt5.4 camera gstreamer • • njozwiak  

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      Hi last year I encountered the same problem. Can you verify on which /dev your camera is? I assume that it is /dev/video1. In the source of multimedia backends gstreamer you can see that the programmed it fix to /dev/video0. This is one of the deepest and darkest places of the qt code. :-) It is Nokia legacy code which finally was rewritten to support gstreamer 1.x with Qt5.5 Maybe you can test it with Qt5.5 alpha and gstreamer 1.x Best regards Juergen
    • Qt 5.4.0 - QtMultimedia Camera Example not working on BeagleBone Black
      Mobile and Embedded • camera gstreamer qt 5.4.0 • • njozwiak  

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