could not load multimedia backend "ffmpeg"

[cappelikan]

cappelikan@cappelikan:~$ QT_MEDIA_BACKEND=ffmpeg plasmoidviewer -a org.kde.plasma.advancedradio
QML debugging is enabled. Only use this in a safe environment.
failed to create drawable
qml: View QML loaded
kf.plasma.quick: Applet preload policy set to 1
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:196:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth"
Toolbox not loading, toolbox package is either invalid or disabled.
qml: New Containment: ContainmentItem_QML_45(0x641b7e445100, "desktop")
could not load multimedia backend "ffmpeg"
QtMultimedia is not currently supported on this platform or compiler.
Failed to initialize QMediaPlayer "Not available"
failed to create drawable
org.kde.plasma.containmentlayoutmanager: Trying to take space not available BasicAppletContainer_QMLTYPE_35_QML_51(0x641b7e46e960, id="appletContainer", parent=0x641b7e3f8b00, geometry=320,240 320x352)
failed to create drawable

Operating System: KDE neon 6.0
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2