/usr/share/sip/PyQt4/phonon/ is in python-qt4-dev 4.11.4+dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/sip/PyQt4/phonon/abstractaudiooutput.sip
/usr/share/sip/PyQt4/phonon/abstractvideooutput.sip
/usr/share/sip/PyQt4/phonon/audiooutput.sip
/usr/share/sip/PyQt4/phonon/backendcapabilities.sip
/usr/share/sip/PyQt4/phonon/effect.sip
/usr/share/sip/PyQt4/phonon/effectparameter.sip
/usr/share/sip/PyQt4/phonon/effectwidget.sip
/usr/share/sip/PyQt4/phonon/mediacontroller.sip
/usr/share/sip/PyQt4/phonon/medianode.sip
/usr/share/sip/PyQt4/phonon/mediaobject.sip
/usr/share/sip/PyQt4/phonon/mediasource.sip
/usr/share/sip/PyQt4/phonon/objectdescription.sip
/usr/share/sip/PyQt4/phonon/path.sip
/usr/share/sip/PyQt4/phonon/phononmod.sip
/usr/share/sip/PyQt4/phonon/phononnamespace.sip
/usr/share/sip/PyQt4/phonon/seekslider.sip
/usr/share/sip/PyQt4/phonon/videoplayer.sip
/usr/share/sip/PyQt4/phonon/videowidget.sip
/usr/share/sip/PyQt4/phonon/volumeslider.sip