Packages with the qtmedia use flag

kde-apps / kwave : Sound editor built on KDE Frameworks 5 that can edit many types of audio files

  • Enable playback via Qt5Multimedia

media-gfx / krita : Free digital painting application. Digital Painting, Creative Freedom!

  • Enable sound support for animations via dev-qt/qtmultimedia

media-sound / qmmp : Qt5-based audio player with winamp/xmms skins support

  • Enable playback via dev-qt/qtmultimedia