![]() ![]() Libgstreamer-1.0.so.0 => /lib64/libgstreamer-1.0.so.0 ~]$ sudo dnf upgrade ~]$ ldd /usr/lib64/libQt6Multimedia.so.6.3.1|grep strea Afterwards the library versions were at:ĭowngrading to 6.3.1 with "sudo dnf install $( grep '^qt' libs-before.txt | sed -Ee 's/. $//' )" immediately fixes the issue: the GUI starts again just fine. So I updated everything with sudo dnf upgrade. However, Qt 6.4.1 is available in the "updates" repo, which is enabled by default. * started mkvtoolnix-gui, and it came up just fineĪt this point the installed versions of the Qt6 libraries are: * installed MKVToolNix v72 with "sudo dnf install mkvtoolnix-gui" (at this point a couple of extra packages were installed, among them qt6-qtmultimedia) * installed my repository with sudo rpm -Uhv as described here * rebooted into the installation, set up my user * booted it, installed it to the hard disk with default options I just gave this a try with a brand new VM: This should obviously not be the case on a Linux distribution. The error message appears when the Qt multimedia library wasn't compiled with any of the supported backends (gstreamer, PulseAudio, ALSA, WMF on Windows…). Here's a slightly shorter version of what I wrote over on the MKVToolNix issue tracker (issue ): The issue is that the `qt6-qtmultimedia` package in version 6.4.1 was compiled without support for any of the supported audio backends. ![]() #13 mtx::gui::App::mediaPlayer at /usr/include/qt6/QtCore/qcoreapplication.h:122 #12 mtx::gui::App::setupMediaPlayer at src/mkvtoolnix-gui/app.cpp:211 #11 mtx::gui::Util::MediaPlayer::MediaPlayer at src/mkvtoolnix-gui/util/media_player.cpp:60 ![]() #10 mtx::gui::Util::MediaPlayerPrivate::MediaPlayerPrivate at src/mkvtoolnix-gui/util/media_player.cpp:47 #9 QMediaPlayer::QMediaPlayer at /usr/src/debug/qt6-qtmultimedia-6.4.86_64/src/multimedia/playback/qmediaplayer.cpp:236 #8 QPlatformMediaIntegration::instance at /usr/src/debug/qt6-qtmultimedia-6.4.86_64/src/multimedia/platform/qplatformmediaintegration.cpp:84 #7 QDummyIntegration::QDummyIntegration at /usr/src/debug/qt6-qtmultimedia-6.4.86_64/src/multimedia/platform/qplatformmediaintegration.cpp:22 #6 QMessageLogger::fatal at /usr/src/debug/qt6-qtbase-6.4.86_64/src/corelib/global/qlogging.cpp:850 Version-Release number of selected component:Ĭgroup: 0::/user.slice/user-1000.slice/user/app.slice/\x2dgui-15048.scope ![]()
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