Dear Maintainer, smplayer still depends on the Qt5 framework, which is deprecated and is slowly getting removed from Linux distributions. Upstream has been working on a Qt6 port some time, but has not made it default for worries about compatibility issues: https://github.com/smplayer- dev/smplayer/issues/632 Please consider switching the Debian package to the Qt6 development branch, or release an experimental version from this branch so it can be tested on Debian. Thank you!