No QtMultimedia backends found. Only QMediaDevices, QAudioDevice, QSoundEffect, QAudioSink, and QAudioSource are available.
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The main media backend, built on FFmpeg, ensures seamless cross-platform functionality, and is the default on all platforms
from https://doc.qt.io/qt-6/qtmultimedia-index.htmlFFmpeg package needs to be installed.
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Hi,
One way to determine what goes wrong is to start your application with the QT_DEBUG_PLUGINS environment set to 1. It will dump everything that goes on with the plugins.
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Do you have that library in your system ?
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Sorry to say that but: you did not answer the question. The library searched is libavformat version 58. Do you have that version available ? Based on the message, no, but it could be a path issue.
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Can you please try the recent version (6.8.0.2)? There were some Multimedia libraries missing in some of the 6.7 versions.
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@SGaist I have the same issue. The version of Qt I am using is 6.7.3.
qt.core.library: "/opt/Qt/6.7.3/gcc_arm64/plugins/imageformats/libqwebp.so" cannot load: Cannot load library /opt/Qt/6.7.3/gcc_arm64/plugins/imageformats/libqwebp.so: libwebp.so.6:cannot open
qt.core.plugin.loader: QLibraryPrivate::loadPlugin failed on "/opt/Qt/6.7.3/gcc_arm64/plugins/imageformats/libqwebp.so" : "Cannot load library /opt/Qt/6.7.3/gcc_arm64/plugins/imageformats/libqwebp.so: libwebp.so.6: cannot open -
@JoeCFD When I execute the command:ldd /opt/Qt/6.7.3/gcc_arm64/plugins/imageformats/libqwebp.so
libwebp.so.6 => not found
libwebp.so.7 => /lib/aarch64-linux-gnu/libwebp.so.7 (0x0000007fa2330000)I’m not quite sure what happened. Could you please help me? greatly appreciate it.
