I installed minitube from the ppa but received several messages:
WARNING: Phonon::createPath: Cannot connect Phonon::MediaObject
( no objectName ) to Phonon::AudioOutput ( no objectName ).
WARNING: bool Phonon::FactoryPrivate::createBackend()
phonon backend plugin could not be loaded
WARNING: Phonon::createPath: Cannot connect Phonon::MediaObject
( no objectName ) to VideoWidget ( no objectName ).
WARNING: bool Phonon::FactoryPrivate::createBackend()
phonon backend plugin could not be loaded
The minitube package installed 8 dependencies, but I also had to install
phonon-backend-gstreamer and libqt4-opengl and now minitube is working.