libqt4-phonon - 4:4.8.7+dfsg-18+deb10u1 main

Qt is a cross-platform C++ application framework. Qt's primary feature
is its rich set of widgets that provide standard GUI functionality.
.
The Qt Phonon module provides a cross-platform multimedia framework that
enables the use of audio and video content in Qt applications.
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The sole purpose of this package to provide Phonon libraries until libphonon4
is built from the phonon source package. Therefore it's only useful when
bootstraping new architectures or rebuilding the whole archive from scratch.